PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System Owner’s Manual

June 15, 2024
PHENYX PRO

PTX-400
Phenyx Pro 8-Channel Audio Mixer Sound Board System
OWNER’S MANUAL

Thank you for purchasing the PHENYX PRO PTX-400 Audio Mixer.
For the best results and the utmost satisfaction for your new unit, please read this manual carefully to ensure proper operation, and keep it for future reference. For more information, please visit our store: www.phenyxpro.com

System Description

The professional and functional PTX-400 manifests excellent build efforts, including rugged materials, sleek design and multiple practical functions to engage a compelling mix. You can entrust the PTX-400 with the tasks of hybrid studio, live gigs, shows, stage performance, DJ events, and Karaoke.
System Features

  • 8 Mono input channels with gold plated XLR and balanced line inputs.
  • The INSERT input jack on each channel to introduce external effect processor for better mixing.
  • The stereo RCA input and output are compatible with special devices, such as hi-fi ampliier, cassette recorder, MD player, sound card, etc.
  • Ultrarlow noise discrete mic preamps with +48V phantom power.
  • Balanced inputs for high signal integrity.
  • The PAD and LOW CUT filter unwanted noises and make a crystal-clear sound.
  • The 7-band stereo graphic equalizer and 3-band EQ embellish your sound with unrivaled high headroom and warmth.
  • Built-in 256 DSP effects enable you to shape and enhance your personal dynamic sound
  • The Bluetooth function can wirelessly stream you music from various devices like smartphones/tablets/iPad
  • The USB audio interface streams and records your music via the USB-A port
  • The professional USB-B port on the rear panel delivers smooth high-quality recording experience with 24bit96kHz high sampling rate.
  • Headphone and control room provide diversified monitor options.

Box content

– 1x PTX-400 Audio Mixer
– 1x User Manual
-1 x Power Adapter

Operation Guidance

Phenyx Pro PTX-400 has XLR&1/47(6.35mm) connected inputs and 1 stereo RCA input. Please connect this unit to your devices according to the below guidance.
*Note: “6.35mm” indicates the jack supports both 6.35mm TRS and 6.35mm TS connectors/cables.PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - overview STEP 1: Connect Inputs

  1. Connecting microphones

  2. Dynamic microphones: XLR/6.35mm (2 TRACK)

  3. Condenser microphones: XLR/6.35mm
    NOTE: Remember to turn on +48V phantom power main control to charge your condenser mics.

  4. Wireless microphone system: connect a 6.35mm to XLR/6.35mm to 6.35mm cable between MIX OUT/XLR OUT of the receiver and MIC/LINE input channel of PTX-400

  5. Connect instruments: 6.35mm (MIC/LINE)
    “Note: If you play within 20ft, it’s ideal to use 6.35mm TS cables for your instruments. Otherwise, you need to use 6.35mm TRS cables, which depends on the specification of your equipment and operating distance.

  6. Connect electronic devices

  7. Stereo amplifier/CD player/player: stereo RCA inputs and outputs

  8. Dynamic processorlequalizer for mono channel: 6.35mm TRS (INSERT)

  9. External audio processorfeffector for main: 6.35mm TS (EFX SEND); 6.35mm TRS (RETURN)

  10. USB stick/MP3/iPad/smartphone: USB-A

  11. Computer: USB-B on the rear panel

STEP 2: Connect outputs

  1. Connect the main speaker: XLR/6.35mm TS (LEFT/RIGHT)
  2. Connect the headphone: 6.35mm TRS (PHONES)
  3. Connect the powered studio monitor speaker: 6.35mm TS (CTRL-L/R)
  4. Connecting the in-ear monitor system: 6.35mm TS (MON)
    “NOTE: It’s available for a mono in-ear monitor system.

STEP 3: Power up the system

  1. Make sure the mixer is OFF, and all the connections are connected successfuly.
  2. Connect the mixer with a power adapter and screw the cable in um the mixer on.

PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - overview
1 STEP 4: Get sound to the speaker

  1. Make sure all [GAIN] knobs and level faders are at the starting point (minimum), and 3-Band EQ knobs, [PAN] knobs, and 7-band stereo graphic equalizer fader are at the middle.
  2. Make sure all [PAD], [LOW CUT], [SOLO], [MAIN/CTRL] switches are in UP position
  3. Turn on all devices, from microphones, instruments, sound equipment, PTX-400 to speakers.
  4. Adjust all knobs of all devices based on your need.

PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - overview
2STEP 5: Get sound to the monitorPHENYX PRO PTX-400 Channel Audio Mixer Sound Board System -
overview 3

  1. AUX 1 bus: the [MON] jack

  2. AUX 2 bus: the [EFX SEND] and [RETURN] jacks

  3. AUX 3 bus: the [PHONES], [CTRL-L] and [CTRL-R] jacks
    Note: AUX bus: the AUX 1, AUX 2 and AUX 3 buses

  4. MAIN OUT bus: the [LEFT (BALANCE)), [RIGHT (BALANCE)], [LEFT] and [RIGHT] jacks

Note: The buses: the AUX bus and MAIN OUT bus

  1. To monitor audio signal only from specific channels via the AUX 3 bus, press the channel [SOLO] button to send the corresponding channel signals. When all the [SOLO] buttons are up , a mixed signal from all channels wil be sent to the AUX 3 bus. Twist the [PHONE/CTRL RM] knob to adjust the output volume.
    “NOTE: The signal will be sent to all other buses whether the switch is on or off.

  2. To monitor audio signal only from specific channels via the AUX 1 bus, press the MON SEND [SOLO] button ( ) together with the channel [SOLO] button to send the corresponding channel signal. When the MON SEND [SOLO] button ( ) is up ( ) , a mixed signal from all channels wil be sent to the AUX 1 bus. Twist [AUX 1 MON] and the [MON SEND] knobs to adjust output volume.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
2

  3. To monitor audio signal only from specific channels via the AUX 2 bus, press the EFX SEND [SOLO] button ( ) together with the channel [SOLO] button ( ) to send the corresponding channel signal. When the EFX SEND [SOLO] bution is up ( ) , a mixed signal from all channels will be sent to the AUX 2 bus. Adjust [AUX 2 EFX], [EFX SEND] knobs and the [EFFECTS] level fader to adjust output volume.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
3

  4. To only send the signal from USB interface to the AUX 3 bus, press the [MAIN L-RICTRL RM] button ( ) . When this bution is up ( ) , the signal wil be sent to the MAIN OUT and AUX 8 buses. This button s useful to adjust background music before sending it to main outputs. Adjust the [USB LEVEL] knob and [2TRIMP3] level fader to adjust the volume.

Step 6: Use the 256 DSP effects

  1. Twist the [EFX PROGRAM] knob to select the desired effect, and then press the knob to confirmt. The selected program number will flash in the display.

  2. Twist the [EFX SEND] knob to adust the parameter (depth, speed, etc.) for the selected effect.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
5

  3. Twist [AUX 2 EFX] knobs to adjust the effect depth for each channel.

  4. Adjust the [EFFECTS] level fader to adjust the overall effect levelivolume of the selected effect.

STEP 7: Use the 7-band Stereo Graphic Equalizer
Adjust 7-band EQ faders for all channels to make your music full and rich.

PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
6

Guidance 1: How to use the Bluetooth function

  1. Press the [MODE] button to select the Bluetooth mode. The Bluetooth function is activated and ready to connect when the icon flashes and the word “bLUE” appears on the display screen.
  2. Tum on your Bluetooth-enabled device and connect the eqUIPMENt named “PHENYX PTX-400″. When the Bluetooth connection is successful, the icon stops flashing. PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig 7
  3. Press the [PREV/NEXT] knob to play/pause the song. And twist it clockwise/counterclockwise to switch to the next/previous song.
    Adjust the [2TRIMP3] level fader to increase/decrease the volume level.
    “NOTE:
    – The Bluetooth function cannot be used simutaneously with USB-A/USB 1.0 recording function.

Guidance 2: How to use the USB function

  1. USB-A/USB 1.0 music streaming

  2. Insert a USB stick/USB-A cable

  3. Press the [PREV/NEXT] knob to play/pause the song. And twist it clockwise/counterclockwise to switch to the next/previous song

  4. Adjust the [2TR/MP3] level fader to increase/decrease the volume level.
    “NOTE: The 256 DSP effects would not be applied to the streaming music from the USB interface.

  5. USB-A/USB 1.0 music recording

  6. Insert a USB stick/USB-A cable.

  7. Press the [MODE] button to select the recording mode.

  8. Press the [PREV/NEXT] knob to start recording. You can also press it o startpause the recording

  9. Long press the [PREV/NEXT] knob to finish the recording and save the file

  10. USB-B/USB 2.0 function

  11. Connect the PTX-400 to your device via the [USB 2.0] jack on the rear panel

  12. You can stream, record, and even process the music by using some useful software such as “Audacity”, “Adobe Audition, “Cakewalk Sonar”, “Sound Forage”, etc.

  13. Adjust the [USB LEVEL] knob to increase/decrease the volume level.

Functional of Parts

Front panelPHENYX PRO PTX-400 Channel Audio Mixer Sound Board System -
fig 9

1- Input channel section

  1. Mono input jack:
    [MIC/LINE]: Accepts both XLR connectors, 6.35mm (1/4”) balanced TRS phone and unbalanced TS phone connectors. Connect microphones and/or instruments you intend to use.

  2. TRACK] stereo jacks
    The stereo input jacks (RCA) are designed to accept a 2-track recorder (.g. DAT recorder), or they can be used as stereo line input.
    If you connect the output of a hi-fi amplifier (with a source selection switch) to the CD/TAPE INPUT, you can easily listen to additional sources (e.g. cassette recorder, MD player, sound card, etc.)
    The stereo output jacks (RCA) are parallel to the MAIN OUT and carry the main mix signal (unbalanced). Connect these jacks to the inputs of your recording device. The final output level can be adjusted via the [2TR/MP3] fader.

  3. [INSERT] jack
    “This jack accepts an impedance-balanced TRS phone-type connector (stereo phone plug = signal output + return input). Insert points enable to process channel signals with dynamic processors or equalizers. They are sourced pre- fader, pre-EQ, and pre-aux send.PHENYX PRO PTX-400 Channel Audio Mixer Sound
Board System - fig 12

  4. [PAD) switch
    It reduces the input gain to prevent loud input sources from overloading the preamp and clipping.
    When this switch is tured on ( ), the input signal from the [MIC/LINE] jack (mono input channel) is attenuated by 26dB. Turn this switch off ( ) if you’ve connected a microphone or other device with a low input level to the channel. Tun it on ( ) if you’ve connected a line-level device.PHENYX PRO PTX-400
Channel Audio Mixer Sound Board System - fig 28 “NOTE: To prevent possible noise when operating switches, tur it off of a channel before operating other switches.

  5. [LOW CUT] switch
    This switch eliminates unwanted, low-frequency signal components under 100Hz for a smoother, cleaner mix. Turning this switch on will apply the filter to the mono input channel.

  6. [GAIN] switch
    For adjusting the gain of the input signal. Mono input channels have a [PAD] switch that lets you change the range of this control.

  7. Equalizer ([HIGH)IMIDY[LOW])
    The equalizer shapes the high, mid, and low audio frequencies. Turning the knob to the right amplifies (boosts) the corresponding frequency band while turning it o the left attenuates (cuts) the band. Setting the knob to the middle position produces a flat response in the corresponding band. The upper knob sets the variable mid frequency, while the lower knob sets the amount of attenuation or boost (counterclockwise/ clockwise) for the range.PHENYX PRO
PTX-400 Channel Audio Mixer Sound Board System - fig 31

  8. [AUX 1 MON] knob
    The level of each channel signal to the AUX 1 bus can be adjusted independently. Adjust this knob to govern the level of each channel signal sent to the MON jack (aux 1 bus)
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
32

  9. [AUX 2 EFX] knob
    The level of each channel signal to the AUX 2 bus and applied buiit-in effects processor can be adjusted. This knob simultaneously governs the level of each channel signal sent to the EFX SEND jack (aux 2 bus) and the level of applied DSP effects for each channel.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
33

  10.  [PAN] knob
    Sets the position of the sound image within the stereo field. This knob adjusts the volume balance of each channel sent to the MAIN OUT bus. When the knob s set to the 12 o’clock position, the channel’s sound will be sent to the LEFT and RIGHT jacks of the MAIN OUT bus at the same volume. In this case, the sound image is positioned at the center
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
34

  11. [CLIP] indicator
    The peak level of the post-EQ signal is detected, and the [CLIP] indicator lights red when the level reaches 3dB below clipping. If it ights frequently, please lower the [GAIN] counterclockwise to reduce the volume.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
35

  12. [SOLO] channel button
    This button is used to route the channel signal to the different
    AUX buses. Please refer to STEP 5in Operation Guidance in XX page.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
36

  13. Channel fader
    For adjusting the level of the channel signal.
    “NOTE: To minimize noise, set the fader for any unused channels to the minimum.PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
37

2- Master Control Section

  1. [PHANTOM +48V] switch and indicator
    This switch toggles phantom power on and off. Turn this switch on ( ) to supply DC+48V to the mono input jacks.
    “NOTE:
    ~Please turn this switch on ( ) if you connect condenser or wired microphones. -Please leave this switch off ( ) if you do not need phantom power.

  2. [EFX SEND] output jack
    For outputting the sound from the mixer to the external audio processor/effector. This output jack accepts an unbalanced TS phone-type connector.

  3. [RETURN] input jack
    For inputting the processed sound from the external audio processor/effector to the mixer buses.
    This input jack accepts a balanced TRS phone-type connector.

  4. [EFX SEND)] knob
    For adjusting the output level to the EFX SEND jack.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
15

  5. [EFFECTS] fader
    For adjusting the input level to the RETURN jack.
    “NOTE: Remember to adjust the [AUX 2 EFX] level knob of each channel for precise application of the external audio processor.

  6. [SOLOJ EFX SEND button
    This switch is used to route the channel signal to the AUX 2 bus. Please refer to STEP 5 in Operation Guidance in page 8.

  7. [MON] output jack
    This output jack accepts an unbalanced TS phone-type connector. You can connect a mono in-ear monitor system to this jack.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
18

  8. [MON SEND] level knob
    For adjusting the output level to the MON jack.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
19

  9. [SOLO] MON SEND button
    This switch is used to route the channel signal to the AUX 1 bus. Please refer to STEP 5 in Operation Guidance in page 8.

  10. [PHONES] output jack
    This output jack accepts balanced TRS phone-type connector. You can connect a headphone to monitor the sound
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
21

  11. [CTRL-L/R] stereo output jacks
    This output jack accepts unbalanced TS phone-type connector. You can connect wedge speakers for musicians in a monitor room to monitor the sound.

  12. [PHONES/CTRL RM] level knob
    For adjusting the signal output level to the AUX 3 bus.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
23

  13. [MAIN OUTPUTS] jack
    These are XLR-type output jacks that output the mixed stereo signal. The signal level is adjusted by the [LEFT] and [RIGHT] master faders
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
24

  14. [LEFT/RIGHT] main out jack
    These are unbalanced TS phone-type output jacks that output the mixed stereo signal. The signal levelis adjusted by the [LEFT] and [RIGHT] master faders.

  15. [OUTPUTS LEVEL] meter
    The level meter LED shows the level of the signal in the MAIN OUT and AUX buses. The “0” segment corresponds to the nominal output level. The level meter lights when the output reaches the corresponding clipping level.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
39

  16. [LEFT] master level fader
    For adjusting the master signal output level left channel) to the MAIN OUT bus.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
40

  17. [RIGHT] master level fader
    For adjusting the master signal output level (right channel) to the MAIN OUT bus.
    PHENYX PRO PTX-400 Channel Audio Mixer Sound Board System - fig
41

  18. Stereo graphic equalizer
    The 7-band stereo graphic equalizer is used for tone control over each frequency.

3- USB interface sectionPHENYX PRO PTX-400 Channel Audio Mixer Sound
Board System - fig 23

  1. USB 1.0 jack
    Connect to a USB stick or a smartphone/iPad/MP3 via a USB cable.

  2. USB LCD display
    Indicates the mode and status.

  3. [PREVINEXT] knob
    For controlling stream-in music from USB-A/USB 1.0 or Bluetooth mode. Twist this knob clockwise to switch to the next song (counterclockwise to the previous song). Press it to pause/play.

  4. [MODE] bution
    For selecting the mode among USB streaming, Bluetooth, and USB recording.

  5. [USB LEVEL] knob
    For adjusting the signal level from the [USB 2.0} jack.

  6. [MAIN L-R/ICTRL RM] button
    This button is used to route the signal from USB interface to the AUX 3 bus or the MAIN OUT bus. Please refer to STEP 5 in Operation Guidance in page 8.

  7. [2TRIMP3] level fader
    For adjusting the signal level from the USB interface and [2 TRACK] jacks output to the MAIN OUT bus.

4 – 256 DSP section

  1. Effect program list
    This is the list of built-in effects programs. For details about these programs, see the “Effect Programs” on page 15.

  2. DSP LCD display
    Indicates the effects program number selected with the [EFX PROGRAM] knob (3).
    ‘The corresponding information flashes during selection; however, if several seconds pass without a selection being made, the program retums to the last number selected.

  3. EFX PROGRAM] knob
    Twist the knob to select the desired effects, and then press the knob to enable it

  4. [EFX SEND] knob
    For adjusting the parameter (depth, speed, etc) for the selected effect.

  5. [EFFECTS] level fader
    This knob adjusts the level of the effect sent from the built-in effects to all channels and MAIN OUT bus.

Rear panelPHENYX PRO PTX-400 Channel Audio Mixer Sound Board System -
fig 27

  1. AC INPUT/FUSE
    Connect the included power code here. First, connect the power cord to this unit and twist to fix the power cord.
    Then plug it into a wall outlet.

  2. -/0]POWER switch
    Turn on the power to the unit on or off. Press the switch to the “1” position to tum on the power. Press the switch 1o the * 0 ” position to turn off the power.

  3. [USB 2.0] jack
    Connects to a computer via a USB-B cable. The signal from the MAIN OUT bus is output to the computer.
    “NOTE: You can twist the [USB LEVEL] knob to adjust signal level from this [USB 2.0] jack.

Troubleshooting

  1. When there is no sound in the stereo output:

  2. Gheck f the mixer connects microphones, external devices, and speakers.

  3. Check if you have turned on all charged devices mentioned above.

  4.  Check if you have adjusted [GAIN] knobs and [LEVEL] faders in relevant channels and [LEFT/RIGHT] master level fader to proper levels.

  5. When the sound is small, distorted, or noisy:

  6. Checkif the peak indicator flashes.
    ‘Yes: turn down [GAIN] knobs in relevant channels, or turn on PAD.
    No: adjust [LEVEL] faders in relevant channels and [LEFT/RIGHT] master level fader to proper levels.

  7. Adjust 3-Band EQ ([HIGH], [MID], and [LOW]) to propel levels to minimize noise.

  8. When no effect is applied:

  9. Check if you have pressed the [EFX PROGRAM] knob to confirm the program.

  10. Check if you have adjusted the [EFF SEND] knob, [EFFECTS] level fader, and [AUX 2 EFX] knobs to proper levels.

Specification

Effect Programs

Number Program
16-Jan VOCAL 1
17-32 VOCAL 2
33-48 HALL
49-64 HALL
6580 SROOM
81-96 LROOM
97-112 PLATE
113-128 TAP REVERB
129144
145-160 MONO DELAY
161176
177-192 FLANGE
193-208
209-224 DELAYER+REV
225240 FLANGE+REV
241-256 CHORUS+REV.

Mono Inputs

Mic input Electronically balanced, discrete input configuration
Bandwidth 10Hz to 60kHz ±3dB
Distortion(THD&N) 0.01% at 4 dBu, 1kHz, Bandwidth 80 kHz
TRIM range +10dB to +60dB
Line Input Electronically balanced
Bandwidth 10Hz to 60kHz ±3dB
Distortion(THD & N) 0.01% at 4dBu, 1kHz, Bandwidth 80kHz
Line level range +10dBu to -40 dBu

Equalization

Hi Shelving  12kHz +/- 15dB
Mid Range 2.5kHz +/- 15dB
Lo Shelving 80Hz +/- 15dB

Master Mix Section

 Max Output +22 dBu balanced
Aux Send Max Out +22 dBu unbalanced
Control Room Out +22 dBu unbalanced
Signal-To-Noise Ratio 112 dB, all channel at Unity Gain

Power Supply

Mains Voltages 110V – 240V AC, 50 – 60Hz.

Technical Support & Warranty Information

Our warranty to you:
Phenyx Technology (“Phenyx”) warrants Phenyx products against evident defects in material and workmanship for a period of one year from the date of original purchase for use.This warranty is valid exclusively in the US and applies only to the original owner. If you discover a defect covered by this warranty, Phenyx will repair or replace the product at our sole discretion using new or refurbished components. Performance of repairs or replacements under this Warranty is subject to registration of your product at www.phenyxusa.com/registerproduct.
Product failures not covered by this warranty :
This warranty covers defects in manufacturing that arise from the correct use of the device. It is limited to defects in materials or workmanship and does not cover electrical or mechanical damage resulting from abuse, misuse, unauthorized modification, lack of reasonable care, extreme heat, cold, damage due to natural forces,or corrosive environments. This warranty does not cover the normal wear and tear on covers, housing, connectors, and accessories.
Limits of liability:
If your Phenyx product fails or does not perform as warranted, your sole recourse shall be to replace or repair it as described above. Phenyx will not be liable to you or anyone else for any damages that result from the failure of this product. These damages include, but are not limited to, the following: lost profi ts, lost savings, lost data, damage to other equipment, and incidental or consequential damages arising from the use of or inability to use this product. IN NO EVENT PHENYX SHALL BE LIABLE FOR MORE THAN THE AMOUNT OF YOUR PURCHASE PRICE, NOT TO EXCEED THE CURRENT LIST PRICE OF THE PRODUCT.
How to obtain service under this warranty:
If you are receiving a system that is defective or you have any questions regarding operation or warranty cover, please contact us at support@phenyxpro.com with any questions or concerns and a Phenyx Pro representative will contact you to provide assistance. You can also reach out to us through Facebook page: www.facebook.com/phenyxusa/ or our official website: www.phenyxpro.com

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