GRACE FELiX 2 Instrument Preamplifier Blender Owner’s Manual
- June 1, 2024
- GRACE
Table of Contents
- FELiX 2 Instrument Preamplifier Blender
- Specifications
- Product Usage Instructions
- Safety Information
- Top Panel Controls and Features
- Back Panel Controls and Features
- Connections
- Adjusting Internal Jumpers
- Cleaning and Maintenance
- Q: Where should I place my preamp?
- Q: How do I use the XLR mic input on CH1?
- Q: What are the output controls and settings?
FELiX 2 Instrument Preamplifier Blender
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Specifications
- Product: 2 Channel Instrument Preamplifier / EQ / DI
- Manufacturer: Grace Design
- Address: 4689 Ute Highway, Lyons, CO 80503
- Contact: 303.823.8100 / info@gracedesign.com
- Website: www.gracedesign.com
Product Usage Instructions
Safety Information
Before operating the instrument preamplifier, please read and
understand the safety information provided in the manual.
Top Panel Controls and Features
Take a look at the top panel controls and features to
familiarize yourself with the layout and functionality of the
preamplifier.
Back Panel Controls and Features
Understand the connections and controls located on the back
panel for proper setup and utilization of the preamplifier.
Connections
Learn about the different input and output connections available
on the preamplifier, including instrument inputs, XLR mic input,
insert connections, DI outputs, and more.
Adjusting Internal Jumpers
If necessary, refer to the manual for instructions on adjusting
internal jumpers to customize the preamplifier settings according
to your requirements.
Cleaning and Maintenance
Regular cleaning and maintenance of the preamplifier are
essential to ensure optimal performance and longevity. Follow the
guidelines provided in the manual.
FAQ
Q: Where should I place my preamp?
A: Refer to section 9.1 in the manual for guidance on the ideal
placement of your preamplifier.
Q: How do I use the XLR mic input on CH1?
A: Section 9.2 of the manual provides detailed instructions on
using the XLR mic input on CH1.
Q: What are the output controls and settings?
A: Section 9.5 of the manual explains the output controls and
settings for your preamplifier.
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2 Channel Instrument Preamplifier / EQ / DI Owner’s Manual Rev. C
Grace Design, 4689 Ute Highway, Lyons, CO 80503 303.823.8100 /
info@gracedesign.com www.gracedesign.com
1
1 Welcome
If you’re reading this, you are probably a working musician or audio
professional of some kind. You’ve spent years honing your craft with long,
lonely hours spent strumming, picking, tweaking, bowing, thumping and
plucking. Maybe you tour the world or just play the local pub. You’ve gotten
up on stage tired, given more than you thought you had and driven home barely
awake but your soul ablaze and still singing. You have friends and bandmates
out there that you rely on like family. Some of your friends, maybe the very
best ones, are made of wood, steel, glue, bone and strings. And now you can
welcome Felix 2 to the latter category.
Regardless of where and how and why you play, from here on
out when you look down at that stage floor, it will be down there shining back
up at you, making you sound better and your job easier.
While this is not the most complicated piece of gear you’ve ever operated, it
does come with a great deal of flexibility and setup options, which means we
highly recommend you have a good look at this owner’s manual to familiarize
yourself with the finer points. Once you overcome the learning curve (easy, we
promise), you’ll find Felix 2 to be intuitive, powerful and really quite user
friendly.
Most of all, we made this preamp so you can make great music. So read this
manual and then get back to work!
TABLE OF CONTENTS
1 Welcome
2 9 Operation
7
2 Safety Information
2 9.1 Where to put your preamp?
7
3 Safety Marking Symbols
3 9.2 Using the XLR mic input CH1
7
4 Features
3 9.3 Instrument / line inputs
7
5 Top Panel Controls and Features
4 9.4 Filtering and EQ
8
6 Back Panel Controls and Features
5
9.5 Output controls and settings
9
7 Side Panel Controls and Features
5
9.6 Footswitch Controls
10
9.7 Side Panel Controls
10
8 Connections
5
8.1 1/4″ Instrument inputs, CH1 & CH2
5 10 Adjusting Internal Jumpers
11
8.2 CH1 XLR mic input
6
10.1 Internal Jumper Locations
12
8.3 Insert connections
6 11 FX Insert Connections
14
8.4 Insert send
6 12 Connection Diagram
15
8.5 Amp Out
6 13 Block Diagram
16
8.6 Tuner Output
6 14 Specifications
17
8.7 DI Outputs, CH1 & CH2
6 15 Cleaning and Maintenance
18
8.8 Headphone Output
7 16 Warranty
18
8.9 100-240VAC Power Input
7 17 Manual Revisions
19
2 Safety Information
· Indoor use only
· Ordinary Protection: This equipment should not be exposed to dripping or
splashing.
· Installation (Over voltage) Category II for transient over voltages.
· Maximum Relative Humidity: <80%
· Avoid placing objects filled with liquids, such as vases or glasses, on this
equipment.
· Class II Equipment (double insulated type)
· Operation temperature range: 10 °C to 40 °C
· Storage and transportation temperature range 40 °C to 70 °C
· Electrical rating: 100-240V~ 50-60Hz 10W
· Maximum altitude: 3000m (9843 ft)
· Mains supply voltage fluctuations are not to exceed ±10% · Equipment suitable for continuous operation
of the nominal supply voltage.
· Weight: 3.2lbs
· Pollution Degree 2
2
3 Safety Marking Symbols
Caution: Read Accompanying Documents
This symbol, located on the equipment and in this manual, refers to important
instructions. Read this manual thoroughly before operating this equipment.
Service Information
The Grace Design Felix 2 contains no user serviceable components. Contact
Grace Design for repair and upgrade information. In the event that your Grace
Design Felix 2 needs to be returned to the factory, contact us for a return
authorization number.
Warning: Electrical Shock Hazard
This symbol, located on the equipment and in this manual, indicates the
potential for electrical shock hazard.
4 Features
· Open, musical and detailed instrument and mic preamplification for
discerning artists and engineers like yourself
· 2 channel audio path with MIX output option
· Stereo or Dual Mono FX loops via TRS send and TRS return
· Dedicated level controlled stereo stage amp output (configurable as CH1 or
MIX and CH2)
· Dedicated tuner out, remains active when unit is muted
· 1/8″ stereo headphone jack, remains active when unit is muted
· Studio quality microphone preamplifier built-in with no electrolytic capacitors in the signal path
· Side panel switches for 48V, phase reverse, mid Hz range select, HPF/notch select, 12V and A/B mode select
· Ultra precision 0.5% thin film resistors used in the signal
· 12V mic input power available on CH1 and CH2 1/4″ inputs
path
· Phase reverse switch for each channel
· Careful power supply design and grounding for professional level headroom and line driving ability
· Variable phase control option on CH2
· Dual ground isolated DI outputs with high quality, low distortion, fully shielded transformers
· 3 input impedance settings on each channel CH1 10K, 1MEG, 10MEG / CH2 332K, 1MEG, 20MEG accommodating a wide range of pickup types
· Super rugged 1/4″ connectors with heavy duty metal bushings
· Mic stand flange mount screw holes for mounting Felix 2 on a mic stand – Atlas Sound AD-11B and 6-32 X 3/8″ pan
· Powerful, independent EQ on both channels hi and low
head phillips stainless steel screws not included
shelving and full parametric midrange
· Universal 100-240 AC power supply with standard IEC
· LOW and HIGH shelving controls each have 2 range (corner
cable works anywhere in the world!
frequency) settings via internal jumpers
· Full 5 year transferable warranty / built for a long, happy
· Mid frequency control has two ranges 70-880Hz / 670 –
life on the road
8kHz
· Designed and built by us in Lyons, CO, USA
· 20Hz-1kHz sweepable HPF on both channels, can also be
set as high Q notch filter
· A / B footswitch for multiple instrument configurations or soloing different pickups
· Mute/ tune footswitch mutes all outputs except dedicated tuner out and headphone output
· Boost footswitch for variable 10dB level boost (global)
· DI outputs sources are configurable – CH1 (mix or CH1) CH2 (mix or CH2)
3
5 Top Panel Controls and Features
12 3
4
5
6
7
8
9
10
11
12
1. Gain controls (CH1&2)
2. Signal / clip LED indicator (CH1&2)
3. High Pass Filter (notch) / Notch filter (CH1&2)
4. Low frequency shelving cut and boost (CH1&2)
5. Parametric Midrange cut and boost (CH1&2)
6. Parametric Midrange frequency select (CH1&2)
7. Parametric Midrange Q factor (CH1&2)
8. High frequency shelving cut and boost (CH1&2)
9. Boost level
10. Mix control
11. A/B footswitch
12. BOOST footswitch
13. Amp / Tuner / Headphone output level
14. MUTE / TUNE footswitch
4
13 14
6 Back Panel Controls and Features
PUSH
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1. Universal 100-240VAC power supply input module 2. DI Ground lift switch 3. CH1 DI output 4. CH1 DI output source select 5. CH1 DI output line / mic level select 6. CH2 DI output 7. CH2 DI output source select 8. CH2 DI output line / mic level select 9. Tuner Output
10. Amp Output 11. Effects Return 12. Effects Send 13. Amp Source Select switch 14. CH1 input mic / line switch 15. CH1 mic input 16. CH2 line input 17. CH1 line input 18. CH1 & 2 input impedance select
7 Side Panel Controls and Features
48V ch1 ch2
123456
1 2 3 45
6 78
1. Dip Switch location diagram 2. `Boot Bumper’ 48V switch protector 3. CH1 48V phantom power 4. CH1 phase reverse 5. CH2 phase reverse 6. DIP switch controls 7. 1/8 mini headphone jack 8. CH2 variable phase control
8 Connections
8.1 1/4″ INSTRUMENT INPUTS, CH1 & CH2
INPUT 1 – This input is for connecting any instrument pickup, electret mic or
line source to CH1. The connector is a standard TRS 1/4″ jack wired tip
signal, sleeve ground. The ring is used only for 12V power if needed. If you
are using this input, remember to select the line’ setting of the adjacent
mic/line’
switch. We recommend muting Felix 2 before changing the setting of the
mic/line switch to avoid pops on the output.
INPUT 2 – This input is for connecting any instrument pickup, electret mic, or
line source to CH2. This input can also accommodate two different signals from
a dual source pickup system on one TRS 1/4″ cable. The connector is a standard
5
TRS 1/4″ jack wired Tip signal to CH2, Ring signal normaled to CH1, and Sleeve
ground. If you are using CH1 with this input, remember to select the line’ setting of the adjacent
mic/line’ switch.
Both CH1 and CH2 line inputs have 3 input impedance settings, selectable from
the toggle switch labeled Z’ . The settings are: CH1: med – 1M / hi -10M / low 10k CH2: med – 1M / hi -20M / low 332k Some pickups or sources are more sensitive to preamp input impedances than others. For example, if you use a
Sunrise’ magnetic pickup, they prefer to
connect with an input impedance of 1M. If you have an onboard preamp or a
lower impedance pickup, the input impedance setting will probably make less of
a difference. In any case, we encourage you to try different settings with
your pickup or source. The difference may be noticeable or not, and should be
set accordingly to what sounds best to you. Always what sounds best to you!
8.2 CH1 XLR MIC INPUT
This input can accommodate any type of microphone, from a SM57 to a large
diaphragm condenser or even a ribbon mic if you’re feeling fancy. The
connector is wired pin 2 positive, pin 3 negative and pin 1 ground. 48V
phantom power, if activated, is supplied on pins 2 and 3. If you are using
this input, remember to select the mic’ setting of the adjacent
mic/line’
switch. The side panel phantom power switch should always be set to OFF
whenever connecting or disconnecting this input. We recommend muting Felix 2
before changing the setting of the mic/line and 48V switches to avoid pops on
the output.
8.3 INSERT CONNECTIONS
The insert connections are buffered, unbalanced send and return points for
connecting outboard effects to Felix 2. Both jacks are TRS (tip- ring-sleeve)
connectors, which allows for mono, dual mono or stereo outboard signal
processing to be placed in series with the output signal. Configuring these
jacks to suit your exact need may require setting internal jumpers (see
chapter 10 for more details).
If your unit has a serial number of 302210725 (black) or 302200533 (silver)
and below, the inserts will only work if the DI output you are using has its
`source’ switch set to MIX even if preamp is in A/B mode. This is because the
insert was originally wired after the mixer in the circuit. However, units
with a serial number of 302210726 (black) or 302200534 (silver) and above have
a new set of jumpers (J33, J34, J35 and J36) which allow you to set the insert
send and returns before or after the mixer for either channel. These new
jumper settings present a large variety of ways to to connect and configure
effects with your Felix 2. Please refer to the addendum to this manual titled
“Felix 2 Advanced Insert Operation”.
8.4 INSERT SEND
The send can be operated as mono, dual mono or stereo. The send TRS jack is
wired as follows:
· Tip – CH1, CH2 or MIX (adjustable via jumper J19)
6
· Ring – CH2 · Sleeve – Ground
The RETURN TRS jack is wired:
· Tip – CH1 · Ring – CH2 · Sleeve – Ground
There are internal jumpers (J14 and J17) that allow the output level of the
INSERT send to be adjusted between 0dB, -6dB and -16dB, which helps when
interfacing with external effects that have much lower headroom than the Felix
2. The factory setting is -6dB. Configuration of internal jumpers is described
in detail chapter 10.
8.5 AMP OUT
This output is for sending an unbalanced, non-transformer isolated output to a
stage amp or anywhere else you may need an additional unbalanced signal. This
output has a level control, which is situated on the right side, bottom row of
controls on the top panel. This output is muted when the MUTE / tune
footswitch is activated.
When the Amp Out source switch is set for MIX, the output is stereo with CH1
or MIX on the tip and CH2 on the ring. The CH1or MIX is determined by the
jumper settings on your insert Send/Receive. When the Amp Out source select
switch is set for CH2, then CH2 (pre insert) is sent out on both the Tip and
Ring.
To use the jack in mono, simply plug in a TS cable.
8.6 TUNER OUTPUT
This is another unbalanced output which is always active provided as a
dedicated stage tuner out. When the MUTE is activated, your stage tuner will
continue to receive signal, allowing you to tune silently. If your unit has a
serial number of 302210725 (black) or 302200533 (silver) and below, the Tuner
output level follows the Amp Out level control. If your unit’s serial number
is 302210726 (black) or 302200534 (silver) or above, the tuner output is a
fixed level, independent of the Amp Out level control. This signal is a mono-
summed version of whatever signal is on the Amp Out jack.
8.7 DI OUTPUTS, CH1 & CH2
These two outputs are balanced and transformer isolated for sending signals to
a front of house console, monitor console or any mixer or interface. The XLR
pinout is: pin 2 positive, pin 3 negative and pin 1 ground.
Each output can be sourced from either its individual channel only or the
blend of the two channels, adjusted by the MIX’ knob on the far right of the top panel. Source select is via the
DI source select’ switch above each XLR
output.
Each output has an level switch line or mic depending on what downstream
input you are feeding. In the mic’ setting, the output is padded down -26dB to interface properly with mic inputs at the console, the
line’ setting is
not padded for level matching with line level inputs at the console or
interface.
By default, both DI outputs are always active when your FELiX is in A/B mode.
However, there is an internal jumper (J15) that allows the DI outputs to be
configured for exclusive mode operation. In this mode, when channel A is
selected, DI 1 is active and DI 2 is muted and when channel B is selected, DI
1 is muted and DI 2 is active. See chapter 10 for details on this jumper
setting.
8.8 HEADPHONE OUTPUT
This is a 1/8″ mini style stereo headphone jack for monitoring signals via
your headphones, IEMs, earbuds etc.. This output level is the same as the amp
out, so the top panel amp out level control is used to adjust headphone volume
as well. This output remains active when Felix 2 is muted, so you can plug in
your IEM’s and practice privately during long, boring
soundchecks. This can also be very useful for hearing a very detailed and
isolated representation of how your EQ settings or variable phase adjustments
are working.
8.9 100-240VAC POWER INPUT
Felix 2 is powered by a Class II Universal AC power supply. This means that no
matter where your musical wanderings take you, you can plug Felix 2 in to the
wall and it will work. And it also means one less wall wart you’ll own in your
life. All units are shipped with a standard AC cable suitable for the country
where it is going. This is a standard, off-the-shelf IEC power cable, so in
the event you misplace the one that came with your Felix 2, you can just
borrow one from the sound-person or the bass player and go.
9 Operation
9.1 WHERE TO PUT YOUR PREAMP?
Anywhere! It will look very pretty when you first pull it out of his box, but
trust us, it’s built to stand up to just about any kind of stage abuse you
might encounter. All the pots have metal shafts and are securely mounted to
the top panel. All the 1/4″ jacks have heavy duty metal bushings. The top
panel is 1/4″ extruded aluminum, and the bottom chassis is appropriately
beefy. As you may have surmised by now, the main inspiration for this product
was to have studio-grade audio hardware, properly ruggedized to live on the
stage floor or mounted to a pedal board.
Also, we have included mounting holes on the underside for a mic stand
mounting flange, Atlas Sound AD-11B (which can be found at most larger music
gear retailers). This allows Felix 2 to be mounted directly to the top of a
mic stand. This mount requires three 6-32 X 3/8″ pan head phillips stainless
steel screws, which are not included but can be found at any hardware store.
NOTE: the rubber feet can be unscrewed from the bottom panel if needed for
using Velcro® to attach the FELiX to a pedal board.
9.2 USING THE XLR MIC INPUT CH1
Before connecting a microphone, make sure the CH1 gain knob is turned all the
way down, the side panel 48V phantom power switch is off (pushed out) and the
CH1 MIC/LINE switch is pushed in. Then connect your microphone and if 48V is
needed, activate it with the side panel 48V switch. Always remember to turn
48V power ON after connecting your microphone and OFF before disconnecting
your microphone.
Use the top panel CH1 signal / clip indicator to properly set the mic level.
The LED will light green with signal present, then will begin to flash red
when the channel is 12dB before clipping. Occasional red flashes are ok, but
if the LED is mostly red, well then, you better turn it down. There are 2 gain
range settings for this input: low (+17dB to +62dB) and high (+22dB to
+63dB) It is set to low at the factory and can be adjusted via internal jumper
J32 (see page 12). In general, use the low gain range for instruments or
condenser mics and high range for dynamic or ribbon mics.
9.3 INSTRUMENT / LINE INPUTS
These are the inputs you will use for connecting your instrument(s) to Felix
2. There is a wide array of different pickup types in the world: active
electronics in an electric bass, passive bridge plate transducers, contact
mics, soundhole magnetics, etc… We wanted to make sure Felix 2 brought out the
best in all of them and accordingly, there are some useful features that can
help make that happen.
Because we designed Felix 2 to play well with a wide array of mics and pickups
on a wide array of instruments, the gain control sweep required is more than
this single potentiometer can provide. Accordingly, an internal jumper is
provided to select between two different gain ranges on the CH1 line input.
This range is set to the LOW setting at the factory, which means the jumper is
NOT connected and which closely matches the gains of CH1 and CH2.
If you are using a source that requires more gain (e.g. a low output pickup on
a delicate acoustic instrument), you may need to set this jumper to the `HI’
position, which shifts the gain range up by 18dB. The CH1 microphone XLR mic
input is not affected by this setting.
Adjusting this gain setting jumper is easy to do and we specifically designed
the chassis to make it easy to access internal jumpers. Please refer to the
jumper diagram and access procedure on page 12. Aren’t you glad you’re reading
this manual? We are, too.
WARNING: Make sure to disconnect the power mains before removing the Felix 2
top panel to make jumper adjustments.
7
Using a Dual Source Instrument with a Single TRS Cable
The CH2 input can accommodate two different signals from a dual source pickup
system on a single TRS 1/4″ cable. The connector is a standard TRS 1/4″ jack
and is wired:
· Tip signal to CH2 input
· Ring signal normaled to CH1 input
· Sleeve to ground
This feature makes using a dual source pickup system very convenient. Assuming
your instrument is properly wired with a TRS output jack, you can simply use a
standard TRS cable to connect both sources to Felix 2, then EQ and blend each
signal accordingly. The sonic results of this kind of acoustic pickup system
can be very excellent.
Input Impedance Selection
Both instrument inputs have 3 different impedance settings:
CH1: med – 1M / hi -10M / low 10k CH2: med – 1M / hi -20M / low 332k
In general, most passive pickups will want to connect to a higher impedance
setting, while active pickups probably a lower. Passive pickups generally will
have more sensitivity to input impedance, but there are no hard and fast
rules. Check with the manufacturer of your particular pickup system to see if
they recommend a specific input impedance for their device. Ultimately, as is
with so many things like this, the final judge of this setting should be your
ears. Impedance mismatches at this stage may not even be audible, or very
subtle, or totally apparent. But trust yourself here nothing will break if
you have the wrong setting just audition the 3 positions of the impedance
switch and if one sounds better over the other 2, than that’s the correct
setting.
12V Power
Both CH1 and CH2 instrument inputs can be used to amplify an electret
capacitor microphone. These are common for applications where small
microphones are mounted inside acoustic instruments, or lavalier style
microphones used somewhere on the outside of the instrument. Normally these
microphones will contain very small integrated preamps which require a small
voltage to power. So the Felix 2 can send 12V phantom power out on both of
these inputs. This is activated via DIP switch # 5 on the side panel.
12V power can be applied to the tip, ring or neither of each channel’s input
jack. Configuration is done via internal jumpers, described in detail on page
12.
NOTE: this power supply charges up slowly, so you may need to wait a few
seconds before signal from your electret mic is present at the input of Felix
2. And, as with 48V phantom power in the XLR mic input, it is always best to
make your input connections before applying power at the DIP switch, and power
OFF the 12V at the DIP switch before disconnecting your source.
Phase Reverse
Both CH1 and CH2 have phase reverse switches, located on the left side panel,
directly next to the 48V phantom power
8
switch. Use these to toggle the polarity of either channel. Experiment with
these methodically one at a time, to find the setting that sounds right. If
you are blending two sources on one instrument, you may find that flipping the
polarity on one source or the other sounds best. If you are using Felix 2 to
toggle between two different instruments, you probably won’t need to mess with
their polarity.
Phase relationships can be very complicated and discrepancies can result in
highly accentuated or de-accentuated bass response of a blended signal. Or it
can sound hollowed out and thin or just downright weird. Again, the rule of
thumb here is whatever sounds right is probably right.
There may be setup scenarios where the front of house or monitor engineer
requires you to try flipping the phase to achieve better phase coherency with
other signals in the mix. At the very least, it’s good for you to know how to
operate these controls and hear them in use with your instruments.
9.4 FILTERING AND EQ
One of the truly defining features of our pal Felix 2 is the very powerful,
fully independent EQ / filter controls on each channel. Each channel has
identical controls, so the descriptions in this section apply to both CH1 and
CH2.
If you haven’t used EQ’s or filters much, we will provide a basic overview
here. But the full science of this process is more than we can cover here, so
we strongly recommend some adjunct reading:
http://en.wikipedia.org/wiki/Equalization
As with all audio processing techniques, the more you know, the better you
will sound.
HPF / Notch
This is the next control to the right of the GAIN knob for each channel. To
select between HPF and Notch, adjust the left side DIP switch locations # 1 &
2 respectively for channels 1 & 2.
HPF: A High Pass Filter will only allow signal information above its set
frequency to pass downstream to the output. This filter employs 12dB per
octave roll off and uses a Thomson Butterworth response for the best
combination of passband flatness and time domain response. Yes, that will be
on the quiz.
GAIN
0dB
HIGH PASS FILTER
-12dB
40
125
1k
20k Hz
Simply put, use the high pass filter to cut unwanted bass frequencies out of a signal. Usually a HPF is used to eliminate rumble or non-musical low frequency information out of a signal. But this HPF range is from 20Hz to 1.0kHz, so you can make very dramatic filter settings. Some instruments won’t have any information below a certain frequency. Fiddle for example only extends its lowest fundamental down to 200Hz.
So if you are amplifying a fiddle, you could safely set the HPF at 150 200
Hz without hearing much effect in the tonality of the instrument. Whereas a
bass can have a low fundamental down around 30Hz, so setting the HPF any
higher than that could affect its tonality.
If you are on a stage with an acoustic guitar, and there is lots of low end
making you sound bad, or feeding back or both, the HPF might be your first
stop to try to control those problems.
Notch: A notch filter is a very sharp and deep cut of a specific frequency.
This is used predominantly to find and remove a specific problem frequency
that may be feeding back through stage monitors or amps, or to simply cut out
a very specific, narrow unwanted part of an instrument’s frequency range. This
notch uses the same frequency sweep of 20Hz 1.0kHz.
GAIN
0dB
NOTCH FILTER
independently. The range of these controls are:
Gain = +/- 12dB,
Freq range LO setting = 70Hz 880Hz
Freq range HI setting = 670Hz 8.0kHz
Q = .5 5
The frequency range can be switched between the LO and HI settings via the left side panel DIP switch locations # 3 & 4. With these two available ranges, the over all range of the mid controls is very wide, which enables targeting of specific sonic areas of a multitude of instrument or pickup types.
GAIN MID EQ
Q
+12dB
0dB
-12dB
20
1k
20k Hz
-12dB
40
125
1k
20k Hz
Under normal operation, if you don’t have a use for a notch filter, we recommend you leave the left side panel DIP switch in the HPF setting. That way, with the HPF set in its fully counter clockwise position, this entire filter control is effectively out of the signal.
Low
The Low control of the Felix 2 preamplifier is fixed at a 125Hz corner
frequency with a gain range of -12 to +12dB. This is a fixed shelving type
control, which means everything below the 125Hz is boosted or cut. Use this
control for cutting and boosting bass frequencies. It’s all about the bass.
GAIN
+12dB
LOW SHELF EQ
0dB
Q factor determines the sharpness of the bandwidth of the frequency being adjusted. A higher Q factor setting turning the Q knob further clockwise – creates a sharper bandwidth and thus a more targeted, surgical EQ adjustment. Alternately, a lower Q factor – turning the Q knob further counter clockwise – creates a broader tonal adjustment.
High
The High control of the Felix 2 preamplifier is set with a 2kHz corner
frequency, with a gain range of -12 to +12dB. This is a fixed shelving type
control, which means everything above the 2kHz is boosted or cut. Simply put,
this is a treble control. If you think your banjo may be too bright, turn this
knob counterclockwise. If you think your guitar needs a little more bite, turn
this knob clockwise. If you’re not sure, then get down there and start turning
it one way or the other until it sounds better.
GAIN
HIGH SHELF EQ
+12dB
-12dB
40
125
12k
20k Hz
Also, because certain instruments may react better to a higher corner, we have added a Low control range jumper on the main PCB. Moving this jumper shifts the Low corner frequency up to 250Hz. This is easy to do! We specifically designed Felix 2’s chassis to make it easy to access internal jumpers. Please refer to the jumper diagram and access procedure on page12. Bravo to you for reading this manual. You get an A.
0dB
-12dB 20
2.0k
12k
20k Hz
Similar to the Low shelf, we have added a High control range
jumper on the main PCB. Moving this jumper shifts the High
corner frequency down to 1kHz. Please refer to the jumper
diagram and access procedure on page 12.
9.5 OUTPUT CONTROLS AND SETTINGS
WARNING: Make sure to disconnect the power mains before opening removing the
Felix 2 top panel to make jumper adjustments.
Mid
The mid range section of Felix 2’s equalizer is fully parametric, which
enables you control the mid range gain, frequency and Q
Boost
Want to go to eleven? How about twenty? This knob sets the amount your signal
is boosted when you activate the `BOOST’ footswitch. Fully counter-clockwise
is zero boost added, fully clockwise adds +10dB of boost. The boost is global,
so it is added to every signal output leaving Felix 2 blended or individual
channels, amp out or either ISO out, even the
9
headphone out.
Boost
This circuit will be set as global, and the boost will be applied to both
channel’s outputs. However, boost can be defeated on CH1 by setting the
internal jumper J3 to “CHANNEL 1 BOOST OFF”. This is useful if you are using a
microphone in CH1 that you would rather not boost and create havoc in the
monitors.
Amp / Phones Output Level
This knob sets the output level of the unbalanced Amp and tuner outputs on the
rearpanel and also of the headphone jack on the right sidepanel. If you are
using a stage amp, use this control as your master level. Correct input gain
settings for your sources, with the signal LED showing mostly green, should
not be adjusted to alter your stage amp level. Rather, use this control to
make master level changes.
If you are using the side panel headphone jack with the MUTE switch activated,
remember that headphone level adjustments will also affect stage amp level,
which could lead to a big nasty sound on stage when un-muting Felix 2 outputs.
Simply make a note of your stage amp level before making adjustments to this
control while headphone monitoring.
Mix
This control adjusts the mix (or blend) between CH1 and CH2. Before using this
control, it’s important to verify if the preamp is set to MIX or A/B mode.
This setting is toggled via the side panel DIP switch #6. With the switch in
MIX mode (the downward position), this control will operate normally as a
simple mixer. With this knob turned fully counter-clockwise, the outputs (set
to MIX) will be sending 100% CH1. With the knob turned fully clockwise, the
outputs will be sending 100% CH2. With the knob centered at 12 o’clock, the
outputs with be sending a 50/50 blend of CH1 and CH2.
If the preamp is set to A/B mode via the left side panel DIP switch #6, then
this control will have no effect.
Remember, if you intend to blend CH1 and CH2, you must set the DI output(s) or
Amp output to `mix’ mode via the pushbutton toggle switches on the rearpanel
and make sure your Insert Send jack internal jumper setting (J19) is
configured to send MIX.
9.6 FOOTSWITCH CONTROLS
Blend A/B
This is the far left foot switch on Mr. Felix 2. If the unit is set to blend
mode via DIP switch # 6, then this switch will do nothing, and both adjacent
LEDs will be permanently illuminated. If the unit is set to A/B mode, then
this switch will be used to toggle between CH1 and CH2, with the accompanying
amber LEDs lighting and extinguishing accordingly. This toggle mode is
exclusive, so if you have CH1 selected, CH2 will be muted and vice versa.
You guessed it. This switch activates the Boost circuit, at the level you set
with the upper row `boost’ knob. For those about to rock, hit this switch
first. The LED will light up GREEN for go.
Mute / Tune
This switch mutes all Felix 2 outputs (ISO 1, ISO 2 and AMP) except the tuner
and headphone outputs. This enables you to quickly and easily cut your signal
to tune or unplug your instrument without having to have the sound person mute
your channel. When MUTE / tune is active, the adjacent LED illuminates RED.
9.7 SIDE PANEL CONTROLS
Felix 2 has a lot going on, more than we could fit on the rear and top panels
alone. So there are a number of features to be familiar with on the side
panel.
CH1&2 Phase Reverse
These two pushbutton toggle switches reverse the polarity of each channel’s
audio signal. To reverse the polarity of either channel, simply push the
toggle in, to return to no polarity reverse, push the toggle again to return
it to it’s outer position.
48V Phantom Power
This activates 48V phantom power for the CH1 microphone preamplifier. Phantom
power is sent out on pins 2 and 3 of the XLR connector.
DIP Switches
This is a bank of 6 DIP switches, used to activate various modes or settings.
Switches 1 & 2 select between CH1 & CH2’s HPF or notch setting. Switches 3 & 4
select between CH1 & CH2’s mid EQ’s frequency range, LO or HI. Switch 5
activates 12V power on the instrument inputs. Switch 6 selects between blend
or A/B mode.
DIP switches are hard to adjust, which is good because they probably won’t get
inadvertently changed, but bad when you actually want to change them. Use the
edge of a fingernail, a guitar pic or a toothpick. Whatever you chose, take
care not to dig into the plastic too hard. You’ll get the hang of it.
Headphone Jack
This is a standard 1/8″ mini headphone jack, suitable for most types of
headphones. It is stereo, and follows whatever signal is present at the AMP
output. The level control for this is the Amp / phones knob on the right side
of the top panel. This output is always active, even if the top panel MUTE /
tune switch is activated. This way you can play or practice privately with
your headphones on while your stage outputs remain muted. Bandmates will be
relieved, sound-people will be happy. Kumbaya.
Variable Phase Control
NOTE: This control is not activated from the factory – an
10
internal jumper must be set to turn it on.
This is a new control for FELiX 2 which allows for variable phase adjustment
of the CH2 signal to correct phase shift that might occur when blending a
microphone in CH1 and a pickup in CH2. Depending on the distance to the sound
source, the mic signal might be naturally delayed compared to a pickup signal.
The further away the microphone, the greater its time delay can be.
PHASE SHIFT
delay of the output increases. From the plots shown below, you can see that at the maximum setting (10 o’clock) there is about -180 degrees of phase shift at 1000kHz. This is about 0.5ms of delay.
Since sound travels at about a foot per millisecond, this is equivalent to about 6″, so if your mic is mounted to your instrument at about 6″ from the strings, you would be time aligned with this setting.
PHASE (deg)
0
ALL PASS FILTER
TIME
Pickup Signal Microphone Signal
-90
-180 20
100
300 500 1k 2k 5k 10k 20k Hz
By using the phase control, you can increase the phase delay of CH2 until it
comes into phase alignment with the mic signal.
PHASE ALIGNED
48V ch1 ch2
Control locations
10 o’clock 8 o’clock 6 o’clock 4 o’clock 2 o’clock
TIME
Pickup Signal Microphone Signal
This control is on the left hand side of the chassis. To use it you need to
first open up your FELiX and set internal jumper J31 to “ON”. Please see page
12 for directions on how to do this. It’s easy!
Once the jumper has been set, then you turn this control clockwise to begin
adjusting the phase delay of CH2. This is a small recessed trim pot, designed
to be adjusted by a small flathead screwdriver.
This control made with an “allpass” filter, which have flat FREQUENCY response
but have frequency dependent phase shift. As the frequency of the input signal
increases, the phase
This control is set be ear! While playing (or better yet with a band-mate
playing) and the pot all the way counter-clockwise (0o), slowly begin to turn
the pot clockwise. If there is phase shift between the two sources, you should
hear them come into phase. They will sound more focused and sturdy. Adjust
this control while listening under headphones or IEMs, which allows you to
isolate the effect of the control from the direct sound of the instrument.
This contol may make a huge improvement or it may be barely noticeable. Result
can vary based on a wide array of variables in your instrument, mic, pickups,
and wiring. If it doesn’t make a big change, then your system might be just
fine the way it is and you can set the jumper back to `OFF’ and
fuhgeddaboudit.
10 Adjusting Internal Jumpers
A bunch of the preamp’s settings can be adjusted via internal jumpers. If you are handy with a screwdriver and tweezers, you’ll be able to make these changes without a problem. However, this is not something you should attempt to do on a dark stage or in the back of the tour van. Directions for disassembling the chassis and accessing the jumpers is as follows:
supply? Ok then.
3. With a #2 phillips screwdriver, remove the 4 chassis screws, located on
the outer edges of the front bottom and rear bottom of the aluminum top
chassis.
IMPORTANT: Before you do anything, disconnect
Felix 2 from the AC power, and disconnect
instrument and mic cables and place Felix 2 on a
flat stable surface with good lighting.
2. DOUBLE CHECK: Did you completely disconnect the power 4. Orient the unit
so the rearpanel is facing away from you.
11
Carefully pull up on the top chassis and flip it up towards you. This will
reveal the top and bottom circuit boards. Do not pull them apart any further
than the ribbon cables that connects them will allow. The top should rest
easily on the work surface flipped over and in front the bottom chassis.
5. Now refer to the jumper location diagram on the following page to adjust
the jumpers you wish.
how your microphone / instrument is wired. This jumper is set to OFF at the
factory, with the jumper simply pressed down on one pin.
J15 – configures DI output mode when the preamp is in A/B mode and DI source
switch is set to MIX. DUAL ISO mode (jumper center and right) keeps both DI
outputs active regardless of which channel is selected. EXCLUSIVE output mode
(jumper center and left) mutes the inactive channel’s DI output. This is set
to DUAL ISO mode at the factory.
J14 and J17 – These jumpers apply a signal pad to the insert send, one for
each channel. There are 3 settings: OFF, -6dB and -16dB. These are set to -6dB
from the factory.
J18 – Insert Return, can be set to MONO or STEREO, depending on how you want
the FX insert to operate. Set to MONO at the factory.
J19 – only units with serial # 302210726 (black), 302200534 (silver) or above
– Insert Send tip can be Channel 1, Mix, or Channel 2. Set to MIX at the
factory.
6. To move a jumper, use tweezers or your fingernails to gently pull the
jumper off of its header pins. To reposition the jumper, double check the
diagram, then gently press the jumper back down in the correct location.
7. When you are finished adjusting the jumpers, make sure there are no loose
jumpers or any other junk lying around inside.
8. Then carefully reassemble the top and bottom chassis, making sure to let
the ribbon cable fold easily back in place. If there is any tension or
something isn’t fitting properly, carefully pull the top and bottom back apart
and inspect for interference.
9. Once you have put the unit back together, replace the 4 screws, making
sure they go in straight and true. You may need to nudge the top panel back
and forth a bit to ensure the holes in the top panel chassis line up evenly
with the inner threaded holes.
10. Do not tighten the screws until all 4 are cleanly started in the threads.
Take your time and remember, cross-threading is a crime.
If you get stuck or something doesn’t look right, call us right away and we’ll
get you taken care of.
Upper PC board Locations
J3 – enables / disables the Boost control on CH1. Set to ENABLE at the
factory.
J11 and J13 – adjusts the EQ’s high shelf corner frequency at either 1kHz or
2kHz. Set to 2kHz at the factory.
J25 and J26 – adjusts the EQ’s low shelf corner frequency at either 125Hz or
250Hz. Set to 125Hz at the factory.
J31 – Activates / deactivates the CH2 variable phase control. Set to OFF at
the factory.
J32 – Selects CH1 preamp LOW or HIGH gain setting. LOW (+17dB and +62dB) and
HIGH (+21dB and +62dB). Set to LOW at the factory.
J33, J34 – only units with serial # 302210726 (black), 302200534 (silver) or
above – Sets the CH1 insert to be pre or post MIX. Set to post from factory.
J35, J36 – only units with serial # 302210726 (black), 302200534 (silver) or
above – Sets the CH2 insert to be pre or post MIX. Set to post from factory.
J37 – only units with serial # 302210726 (black), 302200534 (silver) or above
– allows CH1 to be mixed with CH2 on the tuner ouput. Note: CH2 is always sent
to the Tuner output. Also, with this revision the Tuner Out is no longer
controlled by the Amp Out volume control but is at a fixed level.
10.1 INTERNAL JUMPER LOCATIONS
Lower PC board Locations
J2 – Sets the CH1 instrument input gain range. Options are LO (3-48dB) and HI
(17-62dB). This is set to LOW at factory.
J6 and J7- Configures 12V power, which can be applied to either channel’s tip,
ring, or set to off. Set these according to
12
Lower PCB jumper locations Upper PCB jumper locations
13
11 FX Insert Connections
Insert operation with FELiX2 in MIX mode
Mono Send / Stereo Return
For using mono in, stereo out FX units · TS plug from send’ to TS plug to FX input (standard 1/4″ cable) · Two TS plugs from stereo FX outputs to one TRS plug to
return’ (‘Y’ insert cable). Jumper Settings: J19 – MIX / J18 – ST
Mono Send / Mono Return
For using mono FX units · 1/4″ TS cable from send’ to FX input · TS cable from FX to
return’. FX will be present on any output that has source set to
MIX’ Jumper Settings: J19: MIX / J18 MONO Stereo Send / Stereo Return For using stereo in, stereo out FX units · TRS plug from
send’ to two TS
plugs to stereoFX input (standard Y’ insert cable) · Two TS plugs from stereo FX outputs, to one TRS plug to
return’ (ch1 tip, ch2 ring) Jumper Settings:
J19 – CH1 / J18 – ST
Insert operation with FELiX2 in A/B mode
Mono Send / Mono Return
For using mono FX units · 1/4″ TS cable from send’ to FX input · TS cable from FX to
return’. FX will be present on any output that has source set to
`MIX’ Jumper Settings: J19: MIX / J18 MONO
TRS
`return’
TS
`send’
CH1 FX
tip TS
TS
out out
input
reverb
out
input
comp
tip TS
ring
TS
`return’
TS
`send’
global FX
tip TS
out
input
reverb
out
input
comp
tip TS
TRS
`return’
TRS
`send’
tip
TS ring TS
CH1 FX
out out
input
reverb
out
input
comp
tip TS ring TS
TS
`return’
TS
`send’
global FX
tip TS
out
input
reverb
out
input
comp
tip TS
Mono Send / Stereo Return
For using mono in, stereo out FX units · TS plug from send’ to TS plug to FX input (standard 1/4″ cable) · Two TS plugs from stereo FX outputs to one TRS plug to
return’ (standard ‘Y’ insert cable) Jumper Settings: J19 – MIX / J18
– ST
Dual Mono
Using seperate mono FX loops for each channel · TRS plug from send’ to two TS plugs to FX inputs (standard
Y’ insert cable) · Two TS plugs from FX outputs
to one TRS plug to return’ (standard
Y’ insert cable). FX will be present on
any output that has source set to MIX’. Jumper Settings: J19: CH1 / J18: ST. Use Jumper J15
EXCLUSIVE’ for exclusive DI output if you which to toggle
between 2 different instruments with their own independent FX loops.
14
tip TS rTinSg
TS
`send’
TRS
`return’
CH1 FX
out out
input
reverb
out
input
comp
tip TS
TRS
`return’
CH1 FX
tip TS
out
input
reverb
out
input
comp
TRS `send’
tip TS
ring TS
CH2 FX
out
input
reverb
out
input
comp
ring TS
12 Connection Diagram
15
FELiX2 connections
Nothing too terribly hard and fast here – just the basics about how to plug
stuff in and out of your preamp. If you aren’t sure about how something works,
please have another look at your owner’s manual, check out our website –
www.gracedesign.com – or feel free to call us, we are always glad to help out
in any way we can. 1.303.823.8100, M-F, 9-5 MST
A
out input
tuner
plug FELiX into nice, clean AC power
stage tuner fed by tuner out
acoustic or electric instruments with pickups or internal mics plug into Ch1
or Ch2 inputs
side panel headphone jack
PUSH
FOH mixer fed by DI 1 output. Sourced by mix or Ch1 monitor mixer, recorder, workstation, yadda fed by DI 2 output. Sourced by mix or Ch2
stage amp fed by amp out
amp
input
instrument mic, vocal mic plugged into mic input 1 external effects routed through the inserts can be configured as follows: dual mono (different FX for eachg channel mono FX send / stereo FX return stereo FX send / stereo FX return
out out
input input
reverb
out
input
out
delay
out
input
comp
13 Block Diagram
16
+48V PHANTOM POWER +48V ON/OFF
CH1 BALANCED XLR MIC INPUT
CH 1 +12V MIC POWER (TIP / RING / OFF VIA JUMPER)
LINE / MIC
CH 1 GAIN
CH 1 LO/HI RANGE
CH 1 POLARITY
CH 1 HPF / NOTCH SEL
CH 1 HPF / NOTCH FREQ SEL
CH 1 LO/HI RANGE VIA JUMPER
CH 1 LOW FREQ BOOST / CUT
CH 1 MID FREQ BOOST / CUT
CH 1 MID FREQ FREQ SEL
CH 1 MID FREQ Q
CH 1 HIGH FREQ BOOST / CUT
TIP CH1 1/4″ UNBALANCED IN
CH 1 INPUT IMPEDANCE
CH1 LO/HI GAIN VIA JUMPER
+12V ON/OFF
CH1 1/4″ JACK SWITCH
CH1 SIG / CLIP INDICATOR
CH 1 BOOST ENABLE VIA JUMPER
BOOST ON/OFF
BOOST GAIN
MIX CH 1 / CH 2
CH 2 +12V MIC POWER (TIP / RING / OFF) VIA JUMPER
RING TIP CH2 1/4″ UNBALANCED IN
CH 2 INPUT IMPEDANCE
CH 2 GAIN
CH2 PHASE ON/OFF VIA JUMPER
CH 2 PHASE
CH 2 POLARITY
CH 2 HPF / NOTCH SEL
CH 2 HPF / NOTCH FREQ SEL
CH 2 LO/HI RANGE
CH 2 LO/HI RANGE VIA JUMPER
CH 2 LOW FREQ BOOST / CUT
CH 2 MID FREQ BOOST / CUT
CH 2 MID FREQ FREQ SEL
CH 2 MID FREQ Q
CH 2 HIGH FREQ BOOST / CUT
TOGGLE MODE CH 1 / CH 2 TOGGLE
CH2 SIG / CLIP INDICATOR
CONTROL TYPES:
FRONT PANEL KNOB SIDE PANEL PUSHBUTTON SWITCH SIDE PANEL DIP SWITCH REAR PANEL
TOGGLE SWITCH REAR PANEL PUSHBUTTON SWITCH FOOTSWITCH INTERNAL JUMPER SETTING
TUNER UNBALANCED OUT
ISO1 SOURCE SEL
ISO1 MIC / LINE LEVEL
MUTE / TUNE
CH 1 MIX PRE/POST
INSERT
ISO1 OUTPUT TRANSFORMER
ISO2 SOURCE SEL
ISO2 MIC / LINE LEVEL
ISO1 BALANCED OUT
CH 2 MIX PRE/POST
INSERT
ISO2 OUTPUT TRANSFORMER
AMP OUTPUT LEVEL AMP SOURCE SEL
ISO2 BALANCED OUT GROUND LIFT
TIP = CH 1 RING = CH 2 AMP UNBALANCED OUT
HEADPHONE OUT
INSERT SEND SOURCE SELECT
MIX/CH 1/CH 2
RING = RETURN CH 2 TIP = RETURN CH 1
INSERT SEND PAD -6dB, -16dB
INSERT RETURNS TIP = SEND MIX/CH 1
INSERT SEND PAD RING = SEND CH 2
-6dB, -16dB
INSERT SENDS
14 Specifications
GAIN RANGE (Input to DI Output) CH1 MIC CH1 Inst CH2 Inst Boost THD+N 1kHz,
22Hz-22kHz BW (MIC Input to DI Output line level out) @ 20dB Gain +10dBu out @
40dB Gain +10dBu out @ 60dB Gain +10dBu out INTERMODULATION DISTORTION –
SMPTE/DIN 4:1 7kHz/50Hz (MIC Input to DI Output) @ 40dB Gain +10dBu out NOISE
– REFERRED TO INPUT CH1 MIC @60dB Gain 22Hz-22kHz BW 50 source CMRR @60dB Gain
100Hz 1kHz 10kHz FREQUENCY RESPONSE (Input to DI Output) Mic input @ 40dB Gain
-3dB Inst input @ 20dB Gain -3dB I/O IMPEDANCE CH1 MIC Input CH1 Inst Input
CH2 Inst Input Insert Input DI Outputs Amp, Tuner, Headphone and Insert
Outputs SIGNAL / PEAK LED METER Green threshold Red threshold MAXIMUM INPUT
LEVEL CH1 MIC (low gain mode) CH1 MIC (high gain mode) CH1 Inst CH2 Inst
MAXIMUM OUTPUT LEVEL – 100k Ohm load, 0.1% THD DI Outputs Amp, Tuner,
Headphone and Insert Outputs High Pass Filter / Notch Filter High Pass Filter
Notch Filter EQ Gain Low Frequency Mid Frequency Mid Frequency Q High
Frequency OUTPUT NOISE 22Hz-22kHz BW @ MIN Gain CH1 MIC Input (50 ohms) to DI
Output CH1 Inst Input to DI Output CH2 Inst Input to DI Output POWER
CONSUMPTION 100-240VAC 50/60Hz WEIGHT and DIMENSIONS 3.2lbs Mic stand flange
mount screws (not included)
Low Gain: 17-62dB / High Gain: 21-63dB Low Gain: 3-48dB / High Gain: 17-62dB
-1-37dB 0-9dB
<0.015% <0.015% <0.020%
<0.05%
<-128dB
55dB >75dB >85dB
20Hz 65kHz 20Hz 65kHz
8.1k HI: 10Meg / MED: 1Meg / LOW: 10k HI: 20Meg / MED: 1Meg / LOW: 332k
10k 150 150
-10dBu +10dBu
+4dBu 1dBu
Low Gain: +18dBu / High Gain: 4dBu +20.5dBu
Line: +20dBu / Mic: -6dBu +22dBu
20Hz 1kHz @ -12dB/octave 20Hz 1kHz, >-35dB, Q>4.0
+/- 12dB Low Range: 125Hz Shelving / High Range: 250Hz Shelving
Low Range: 70Hz 880Hz / High Range: 670Hz 8kHz 0.5 5
Low Range: 1kHz Shelving / High Range: 2kHz Shelving
<-90dBu <-89dBu <-98dBu
10 Watts Max
H3.0″ x W9.5″ x D5.5″ 6-32 X 3/8 pan head phillips stainless steel
17
15 Cleaning and Maintenance
Your Felix 2 is chassis is constructed out of high quality aluminum and steel.
Under normal circumstances, very little maintenance is required to keep it
looking good. However, if you find it getting more dirty or dusty than you
like, here are some cleaning tips: We recommend using a little shot of
WindexTM, applied to a clean, dry, lint free cloth. Gently wipe all surfaces,
taking care not to allow the cleaning product to build up around or under the
knobs.
16 Warranty
· Grace Design warrants this product to be free of defective parts and
workmanship for a period of five years. This warranty period begins at the
original date of purchase and is transferable to any person who may
subsequently purchase the product during this time.
· This warranty excludes the following conditions: normal wear and tear,
misuse, customer negligence, accidental damage, unauthorized repair or
modification, cosmetic damage and damage incurred during shipment.
· During the time of this warranty, Grace Design will repair or replace, at
its option, any defective parts or repair defective workmanship without
charge, provided the customer has appropriate proof of purchase and that the
product has its original factory serial number.
· In order for Grace Design to provide efficient and timely warranty service,
it is important that you mail the completed warranty registration card
enclosed with all of our products within 10 days of the original date of
purchase. You may also register your product directly with Grace Design by
telephone (303-823-8100 Monday-Friday
9:00am to 5:00pm MST), or you can register your product online at
www.gracedesign.com.
· This warranty is in lieu of all other warranties whether written, expressed,
or implied, INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.
· In no event will Grace Design be liable for lost profits or any other
incidental, consequential or Exemplary damages, even if Grace Design is aware
of the possibility of such damages. In no event will Grace Design’s liability
exceed the purchase price of the product.
· This warranty gives the customer specific legal rights. The customer may
also have other rights, which vary from state to state. Some states do not
allow limitations on implied warranties or consequential damages, so some of
the limitations of the above may not apply to a particular customer.
18
17 Manual Revisions
Revision
A B
C
Page
all 12,13
6,12,13,16
Change
Initial release
Corrected J15 position description and corrected location diagram
Added information for board rev AT155 Rev H units with serial # 302210726
(black), 302200534 (silver) or above. New features: insert pre and post MIX,
insert send setting, and tuner out changes.
Date
03/05/2021 11/19/2021
2/20/2024
Initials
edg edg
edg
19
References
Read User Manual Online (PDF format)
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