OSD NERO HTD8150 Multi Channel Amplifier Owner’s Manual
- September 23, 2024
- OSD NERO
Table of Contents
HTD8150 Multi Channel Amplifier
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Product Specifications
- Model: HTD8150 | HTD6150 | HTD4150
- Thermal Protection: Yes
- Channels: Multiple channels
- Power: Varies by model
- Trigger Input: 12VDC
- Frequency Range: 30Hz – 300Hz
Product Usage Instructions
1. Installation
Make sure to follow these steps for proper installation of the
HTD Series Multi-Channel Amplifier:
-
Check speaker connections for any faults or short
circuits. -
Turn on the rear panel AC Power Switch before pressing the
Power/Standby Button on the front panel. -
Refer to the Front Panel and Rear Panel sections for detailed
information on each component.
2. Front Panel
The Front Panel includes the Power/Standby Button which operates
as follows:
- Turn on the rear panel AC Power Switch first.
- Press the Power Switch to turn the AMP On.
- Press again to place the AMP in Standby mode.
3. Rear Panel
The Rear Panel features various components including:
-
Trigger Input for receiving a 12VDC signal from another
device. -
Frequency Selector Knob for setting the high pass or low pass
filter frequency. -
Ground Isolation options for proper grounding.
Frequently Asked Questions (FAQ)
1. What should I do if the Zone LED indicator blinks rapidly
between red and blue?
If this fault condition occurs, turn off the amplifier and check
speakers for short circuit conditions.
2. How does the Trigger Input function?
The 12V Trigger Input takes a 12VDC signal from another device;
when a signal is sent, the amplifier switches on, and it returns to
standby mode when the trigger is removed.
3. How do I set the crossover frequency using the Frequency
Selector Knob?
The knob sets the frequency for either the High Pass filter or
the Low Pass Filter depending on which setting you select, either
LP or HP.
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HTD SERIES MULTI CHANNEL HT AMPLIFIER OWNER’S MANUAL
HTD8150 | HTD6150 | HTD4150
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HTD SERIES MULTI CHANNEL AMPLIFIER OWNER’S MANUAL
WARNING
· TO PREVENT FIRE OR SHOCK HAZARD, DO NOT USE THIS PLUG WITH AN EXTENSION
CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO
PREVENT BLADE EXPOSURE.
· TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
MOISTURE.
· TO PREVENT ELECTRICAL SHOCK, MATCH WIDE BLADE PLUG TO WIDE SLOT, FULLY
INSERT.
This lighting flash with arrowhead symbol, within an equilateral triangle, is
intended to alert the use to the presence of un-insulated dangerous voltage
within the products enclosure that may be of sufficient magnitude to
constitute
a risk of electric shock to persons.
RISK OF ELECTRIC SHOCK DO NOT OPEN
This lighting flash with arrowhead symbol, within an equilateral triangle, is
intended to alert the use to the presence of un-insulated dangerous voltage
within the products enclosure that may be of sufficient magnitude to
constitute
a risk of electric shock to persons.
The exclamation point within the equilateral triangle is intended to alert the
user to the presence of important operating and maintenance (servicing)
instructions in the literature accompanying appliance.
IMPORTANT SAFTEY INSTRUCTIONS
1. Read these instructions. 2. Keep these instructions. 3 Read all warnings.
4 Follow all Instruction. 5. Do not use this apparatus near water. 6. Clean
only with dry cloth. 7. Do not block any ventilation openings. Install in
accordance with the manufacturers instructions. 8. Do not install near heat
sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat. 9. Do not defeat the safety purpose
of the polarized or grounding type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two blades and a third
grounding prong. If the provided plugs does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet. 10. Protect the power
cord from being walked on or pinched particularly at the plugs, convenience
receptacles, and at the point where they exit form the appliance. 11. Only use
attachments or accessories specified by the manufacturer. 12. Unplug the
apparatus during lightning storms or when unused for long periods of time. 13.
Refer all servicing to qualified personnel. Servicing is required when the
apparatus has been damaged in anyway, such as power supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or moisture, does not operate normally,
or has been dropped.
HTD SERIES MULTI CHANNEL AMPLIFIER OWNER’S MANUAL
Introduction
Congratulations on buying one of the most flexible and powerful home theater
or multichannel amps available. These are the ideal amps for mounting in
confined spaces such as racks, credenzas, and cupboards. They are also ideal
for running for long periods of time without having to worry about over-
heating. The internal fans are extremely quiet, only turning on when needed.
Each of the HTD amplifiers are configured in such a way that any, or all, of
the channels can be bridged for maximum power into 8 Ohms. Two of the channels
can also be bridged and used as a subwoofer amp with available controls for
cross-over frequency control and well as phase and level control. The amps can
also be configured to turn on automatically when a 12 v signal is detected and
turn off again when not detected. This is useful when the amp is not easily
accessible, or you wish to simplify the turn-on/off procedure. Front panel
LED’s indicate status or warn of wiring issues, and a ground isolating switch
is available to help troubleshoot hum issues.
Welcome to the OSD family.
Thermal Protection
All HTD amplifiers are designed with special circuitry to safeguard the
amplifier under a thermal overload condition. Thermal protection mode will
only engage when the unit has been run at high volume for extended periods
without adequate ventilation and when speaker impedances are below the minimum
levels for the amplifier. In thermal In protection mode, the amplifier will
automatically stop output. If this fault occurs, turn off the amplifier and
check that the speaker impedance rating is above the minimum rating. Also,
check for adequate ventilation around the amplifier and make necessary
adjustments. The amplifier may be powered back on once the unit has cooled to
safe operating temperatures.
Protection Circuitry
Special circuitry has been designed into the HTD Series Multi-Channel
Amplifiers to safeguard under a short-circuit condition. A faulty speaker can
also cause a short circuit condition. The Zone LED indicator will blink
rapidly between red and blue. If this fault condition occurs, turn off the
amplifier and check speakers for short circuit conditions when appropriate.
Installation
Note: the default gain for each channel is set to zero volume. Please adjust
for each channel to set the max volume level for each zone. Typically, once
you set it you forget it. Instead relying on your source device to control the
master volume. The HTD Series Multi-Channel Amplifiers can be placed on a
shelf, as part of an equipment rack, or on a table or cabinet. During
installation, keep in mind that the amplifiers require proper clearances for
ventilation and heat dissipation. The amplifier will take two rack spaces with
the feet removed.
HTD SERIES MULTI CHANNEL AMPLIFIER OWNER’S MANUAL
Front Panel
2
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Note:
The HTD4150, HTD6150, and HTD8150 all have similar Front Pane ls.
The number of Status LEDs based upon how8many channels each8 Amp has (one per c8h annel) is the only difference. The HTD6180 is featured here in the Callouts
1. Power/Standby Button Note: The rear panel AC Power Switch must be turned on first for the Front Panel to light up Press the Power Switch to turn the AMP On, press again to place the AMP in Standby mode
2. Status Display Window LED on top of Front power switch and 1-6 Zone LED Status for HTD6150 When switched off, the LEDs will not light up When turning the unit on, the Status LEDs will light up Green, and the 1-6 Zone LED will light up Blue When pressing the power button again, the Status LEDs will light up Amber (Going into standby), and the 1-6 Zone LEDs will turn off. When there are issues on the unit (such as high temperature/ short circuit ), the 1-6 Zone LED will turn to RED, and the power LED will turn to Amber! Noted: if the problem was caused by high temperature, the unit would go back to work after the temperature comes down, but if there are any other failure issues, then the AMP will continue in the failure mode(1-6 Zone LEDs light up Red/ power LED amber). Turn the Amp off and unplug it and Contact OSD customer service. 3. Power/Status 2-way LED light above the Power Button Power LED should be Green when you first press it, the Channel Status LEDs will be Blue. Press the Power Button again and the Status Lights turn off and the POWER LED turns AMBER
HTD SERIES MULTI CHANNEL AMPLIFIER OWNER’S MANUAL
Rear Panel
TRIGGER
INPUT
OUTPUT
BRIGHT
DIM OFF
C
C
FRONT LEDS
12
67
GAIN
STEREO
BRIDGED MONO
GAIN
CH 6
CH 5
INPUT
4
INPUT (bridge)
5
3
OUTPUT 4
4 OUTPUT
BRIDGED 8
8
GAIN
STEREO
BRIDGED MONO
GAIN
CH 4 INPUT
CH 3 INPUT (bridge)
OUTPUT 4
4 OUTPUT
BRIDGED 8
10
12
GAIN
STEREO
BRIDGED MONO
GAIN
CH 2 INPUT
100
80
120
45
200
30 300 FREQ.(Hz)
LP OFF HP
CH 1 INPUT (bridge)
GROUND ISOLATION
FLOAT
RC
GND
11
POWER
AC VOLTAGE SELECTOR
9
OUTPUT 4
4 OUTPUT
BRIDGED 8
13
100/120V~60Hz T12AL 250V
220/240V~50Hz T6AL 250V MAX 1125W
14
1. 12V Trigger Input takes a 12 VDC signal from another device using a Mono 3.5mm aux cable. When a signal is sent, the HTD amplifier will switch On; when the trigger is removed, the HTD will return to standby mode. The Main power switch on the back needs to be On for the Output trigger to send a signal to another connected device.
the lower frequencies below pass below the crossover frequency selected. The
Off-position bypasses the crossover selector all together.
10. Frequency Selector Knob this sets the frequency for either the High Pass
filter or the Low Pass Filter depending on which setting you select either LP
or HP.
2. Front LED Dimmer Knob allows you to adjust the brightness of the front
LEDS, even to turn them fully off so they are not distracting in the darkness
of a Home Theater.
3. Speaker Five-Way Binding Post output connectors, the negative is on top,
the positive is on the bottom for all channels.
4. Unbalanced Single RCA Input the even numbered channels are the right
channel input connections
5. Unbalanced Single RCA Input the odd numbered input is the Left input for
stereo and is marked for connecting a single bridge connection when grouping
the two channels internally as oneLED will be off. Standby Mode The amplifier
will go into Standby mode when ther is no 12V signal present.
6. Individual Gain Knob For Each Channel Unit is shipped from the factory
with these set to 0dB, They must be adjusted
7. Stereo/Bridge (Mono) Switch Comes set to stereo from the factory. You can
bridge the positive (right channel) and negative (left channel) together (mono
output). The switch is found between the two adjacent channels that are
bridged together.
8. Bridged Connection positive on the even numbered (right) channel and
negative to odd numbered (left) channel. 8 only
9. LP/OFF/HP Channel 1 and Channel 2 for all three HTD Amplifiers feature a
switch to select Low Pass/Off/High pass option that only works in the Bridged
mode. High Pass means that the frequencies above the crossover Frequency
setting selected will pass through, while
11. Ground Isolation Switch This switch selects the level of isolation
between the audio signal ground and the AC earth ground. In the normal
operation this switch should be in the GND Ground position. If there is
trouble with an AC ground hum, try the other two settings for the best
operation. For safety, the chassis is always connected to the earth ground
regardless of the switch setting.
12. AC Power Switch This switch shuts off the main AC power. Normally the
only time you need to turn this off is if the system is going to be shut down
for an extended period of time. Use the front panel power button or master
trigger inputs to switch the unit between standby and on. The main power must
be on for either of these options to work. Note: Also turn the power switch
off during lightning storms, windstorms with frequent power outages.
13. AC Voltage Selector Switch Select either domestic ; 110V, or
international; 230V
14. IEC Power Cord Receptacle The HTD amplifiers can be powered by any
receptacle that provides either 115 VAC or 230 VAC. Check the AC Voltage
Selector Switch to verify which selection is applicable for your area. There
is a high-quality commercial power cable included in the box.
There is Fuse holder at the bottom of the AC Receptacle. Make sure you replace
the existing fuse with the proper Value for your application:
100/120V~60Hz T12AL 250V
220/240V~50Hz T6AL 250V MAX 1125 W
)5%
HTD SERIES MULTI CHANNEL AMPLIFIER OWNER’S MANUAL
System Diagram Examples
6 Channel Configuration
MODEL: HTD6150
This product is built in a UL certified factory and meets the UL 62368-1
requirements.
Stereo Pairs 8 or 4
5 Channel Configuration
MODEL: HTD6150
This product is built in a UL certified factory and meets the UL 62368-1
requirements.
Stereo Pairs 8 or 4
)5% )5% )5%
)5% 8 Subwoofer Bridged
)5%
3 Channel Configuration
MODEL: HTD6150
This product is built in a UL certified factory and meets the UL 62368-1
requirements.
)5%
LCR Left-Center-Right Bridged-8 Each
HTD SERIES MULTI CHANNEL AMPLIFIER OWNER’S MANUAL
Specifications
Model
Specification OUTPUT POWER(RMS)(UNIT:W),@.1% THD (SINGLE CHANNEL) OUTPUT POWER(RMS)(UNIT:W)@1% THD (SINGLE CHANNEL) OUTPUT POWER(RMS)(UNIT:W)@.1% THD (SINGLE CHANNEL) OUTPUT POWER(RMS)(UNIT:W)@1% THD (SINGLE CHANNEL) ALL CHANNEL OUTPUT POWER(RMS) (UNIT:W)@0.1% THD ALL CHANNEL OUTPUT POWER(RMS)(UNIT:W)@1% THD ALL CHANNEL OUTPUT POWER(RMS) (UNIT:W)@0.1% THD ALL CHANNEL OUTPUT POWER(RMS)(UNIT:W)@1% THD
Parameter 4 Ohms 4 Ohms 8 Ohms 8 Ohms 4 Ohms 4 Ohms 8 Ohms 8 Ohms
Measured in Watts Watts Watts Watts Watts Watts Watts Watts
HTD-4150
150 200 85 120 130 175 75 100
HTD-6150 HTD-8150
150
150
200
200
85
85
120
120
130
130
175
175
75
75
100
100
Bridged Rating (RMS)(UNIT:W)@1% THD (SINGLE CHANNEL)
8 Ohms
Watts
400
400
400
FREQUENCY RESPONSE @ + or -3dB – Hz
xHz – xKHz
Hz
10-30KHz
12-39KHz
12-30KHz
SIGNAL TO NOISE(A weighted)(UNIT:dB) Stereo mode, @1K/100Hz @1% THD, RCA input or named I/O
8 Ohms
dB
105
105
105
DAMPING FACTOR rated power
1 KHz
0 – 500
90
90
90
IDLE CURRENT – Amps MAX.CURRENT @ALL CH. At rated power – Amps EFFICIENCY OF
AMPLIFIER – % Amplifier Type (A, AB, H, D) Transformer type (EI, Toroidal)
Capacitors, number and size Air-cooled or fan cooled 12 Volt Triggers Auto-On
Sensing Sub-Out
Power Supply Rack Mountable
Dimensions (Identical)
Weight, different per model
Certification
Amps Amps x’%
Net Weight
Amps Amps
% A, AB, H, D EI, Toroidal
uF Air or Fan
mV Y/N
Y/N
115v, 230v or 110-230v Y/N
MM(LxWxH)
Inches (LxWxH)
KG/Lbs
Gross Weight
KG/Lbs CL/ETL/UL
0.18 5.9A 88%
D SMPS
Fan Y No
Y
110/120 or 220/240v
Y L=385mm/425mm L=15.56″/16.73″ 3.3 kg. 7.3 lbs. 4.41 kg. 9.74 lbs. CE/UL Note
0.19 8.7A 88%
D SMPS
Fan Y No Y
110/120 or 220/240v
Y
W=427mm
W=16.81″ 3.57 kg. 7.88 lbs. 4.78 kg. 10.55 lbs. CE/UL Note
0.22 12.1A 88%
D SMPS
Fan Y No Y
110/120 or 220/240v
Y
H=88mm
H=3.46″ 3.9 kg 8.6 lbs. 5.0 kg. 11.04 lbs. CE/UL Note
WARRANTY INFORMATION
OSD NERO electronics have (2) year Limited Warranty against defects in
materials and workmanship. Proof of purchase must accompany all claims. During
the warranty period OSD Audio will replace any defective part and correct any
defect in workmanship without charge for either parts or labor. OSD Audio may
replace returned electronics with a product of equal value and performance. In
such cases, some modifications to the mounting may be necessary and are not
OSD Audio’s responsibility. For this warranty to apply, the unit must be
installed and used according to its written instructions. If necessary,
repairs must be performed by OSD Audio. The unit must be returned to OSD Audio
at the owner’s expense and with prior written permission. Accidental damage
and shipping damage are not considered defects, nor is damaged resulting from
abuse or from servicing performed by an agency or person not specifically
authorized in writing by OSD Audio. OSD Audio sells products only through
authorized dealers and distributors to ensure that customers obtain proper
support and service. Any OSD Audio product purchased from an unauthorized
dealer or other source, including retailers, mail order dealers and online
sellers will not be honored or serviced under existing OSD Audio warranty
policy. Any sale of product by an unauthorized source or other manner not
authorized by OSD Audio shall void the warranty on the applicable product.
Damage to or destruction of components due to application of excessive power
voids the warranty on those parts. In these cases, repairs will be made on the
basis of the retail value of the parts and labor. To return for repairs, you
must email customer service at RMA@audiogeargroup.com for a Returned
Merchandise Authorization (RMA) number then the unit must be shipped to OSD
Audio at the owner’s expense, along with a note explaining the nature of
service required. Be sure to pack the product(s) in a corrugated container
with at least 3 inches of resilient material to protect the unit from damage
in transit. This Warranty Does Not Cover: Damage caused by abuse, accident,
misuse, negligence, or improper operation (installation) · Any products that
have been altered or modified · Any product whose identifying number of decal,
serial #, etc. has been altered, defaced or removed · Normal wear and
maintenance.
OSD Audio | Brea, CA | osdaudio.com
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