Phenyx Pro PTX-20 Professional DJ Audio Mixer User Manual

Introduction

The Phenyx Pro PTX-20 is a versatile 6-channel audio mixer designed for professional use in studios, on stage, and for karaoke. It features ultra-low noise discrete mic preamps, 3-band EQ on all channels, and +48V phantom power for condenser microphones. Enhance your sound with 99 built-in DSP effects. The mixer offers convenient USB and Bluetooth functions for audio streaming and recording directly to a PC, iPad, phone, or USB stick.

• 6-INPUT, 3 BAND EQ, +48V Phantom Power: Professional ultra-low noise discrete mic preamp with 6 mono input channels, gold plated XLRs, and balanced line inputs. Ultra-musical 3-band EQ on all audio DJ mixer channels. +48V phantom power for condenser and wired mics.
• USB/BT FUNCTION: Wirelessly stream music from iPad/smartphone. USB-A jack for playing audio from USB drive and recording to PC/iPad/Phone/USB stick. Separate USB-B jack for high-quality recording. Simultaneous Bluetooth and USB recording.
• 99 DSP EFFECTS, RECORDING FUNCTION: High-quality components and rugged construction. Built-in 99-bit DSP sound processor provides 99 sound board effects selectable by PROGRAM control knob for a personalized mix.
• HIGH-QUALITY SOUND, VERSATILE USE: Extremely high headroom for dynamic range. 6 separate faders for quick volume adjustment. Accurate, crisp, and clear sound quality, ideal for live gigs, shows, stage performances, DJ events, and karaoke.

What's in the Box

• 1 x Phenyx Pro PTX-20 Audio Mixer
• 1 x Power Adapter
• 1 x User Manual

Figure 1: Contents of the Phenyx Pro PTX-20 package.

Setup

Initial Connection

1. Connect the power adapter to the mixer's AC input and plug it into a power outlet.
2. Turn on the power switch located on the rear panel of the mixer. The display screen will show 'NO' as default.

Figure 2: Front view of the Phenyx Pro PTX-20 mixer.

Controls Overview

Familiarize yourself with the mixer's controls for optimal performance.

Figure 3: Key controls and features of the PTX-20 mixer.

Operating

Bluetooth Function

The PTX-20 allows wireless audio streaming via Bluetooth from your smartphone or tablet.

1. Press the white MP3/BT CONNECT button located at the bottom right of the mixer. The display will show 'bt' and the Bluetooth icon will flash, indicating it's in pairing mode.
2. On your smartphone or iPad, turn on Bluetooth and select 'MIX-MP3 BT' from the list of available devices.
3. Once connected, the Bluetooth icon on the mixer's display will stop flashing.
4. Use the PROGRAM knob to play or pause the music. Turn the knob clockwise to select the next song, or counter-clockwise for the previous song.

Note:

• Audio streamed via Bluetooth will NOT pass through the 99 DSP processor. DSP effects only apply to audio input from the six main channels.

Figure 4: Bluetooth/MP3 Connect button.

USB Playback and Recording

The PTX-20 supports USB playback for WAV/WMA/MP3 files and recording to a USB stick or directly to a computer/smart device.

USB Playback

1. Insert a USB drive into the USB-A port on the mixer. The display will show 'Lod' (loading) and then the track number and time.
2. If it's the first time using the USB drive, playback will start from the first song. Otherwise, it will resume from the last played song.
3. Use the PROGRAM knob to play/pause or skip tracks.

Figure 5: MP3 USB-A port.

USB Recording (to USB stick)

Ensure your USB stick has at least one MP3 file for the recording function to activate.

1. Insert a USB stick into the USB-A port.
2. Long-press the white STOP/REC button to enter recording mode. The display will show 'rEC'.
3. Tap the blue PROGRAM knob to start recording.
4. Long-press the PROGRAM knob again to save the file as an MP3.

Figure 6: How to record through the USB-A jack.

PC Recording (via USB-B)

The PTX-20 can record directly to a computer, iPad, or smartphone using the USB-B port and compatible adapters. Note that Bluetooth and PC recording cannot be used simultaneously.

1. Connect the mixer to your PC using a USB-A to USB-B cable. The mixer's display will show 'PC'.
2. Open your preferred recording software (e.g., Audacity) and select the mixer as the audio input device.
3. Start recording in your software. You can adjust EQ, gains, and DSP effects during recording.
4. To finish recording, short-press the blue PROGRAM knob on the mixer or use the control button in your software.

Important:

• The PTX-20 will mix all inputs and record them as a single track (mono or stereo) in the software. It does not allow multitrack recording or mixing.
• The pause, previous, and next functions are disabled during recording.

Figure 7: USB-B port for PC connection.

99 DSP Effects

The built-in 99-bit DSP sound processor provides 99 sound board effects. Users can rotate the PROGRAM control knob to select different effects and press it to confirm the setting.

Figure 8: List of 99 DSP effects and selection method.

Maintenance

To ensure the longevity and optimal performance of your Phenyx Pro PTX-20 mixer, regular maintenance is recommended.

• Cleaning: Use a soft, dry cloth to wipe down the mixer's surface. Avoid using abrasive cleaners or solvents that could damage the finish or internal components.
• Storage: When not in use, store the mixer in a cool, dry place away from direct sunlight, excessive heat, and moisture. Protect it from dust by covering it with a cloth or placing it back in its original packaging.
• Connections: Periodically check all cable connections (XLR, 1/4'', USB) to ensure they are secure and free from damage. Loose connections can lead to signal loss or noise.
• Ventilation: Ensure the mixer's ventilation openings are clear and unobstructed to prevent overheating. Do not place the mixer on soft surfaces that could block airflow.

Troubleshooting

If you encounter issues with your PTX-20 mixer, refer to the common problems and solutions below.

• No Sound Output:
  • Check all cable connections from the mixer to your speakers/amplifiers.
  • Ensure all volume faders and gain knobs on the mixer are turned up appropriately.
  • Verify that your speakers/amplifiers are powered on and functioning correctly.
• Noise or Hum:
  • Ensure all cables are properly shielded and in good condition.
  • Check for ground loops. Try plugging all audio equipment into the same power strip.
  • Reduce gain levels if input signals are clipping (indicated by red CLIP lights).
• Bluetooth Connection Issues:
  • Ensure the mixer is in Bluetooth pairing mode (flashing 'bt' on display).
  • Forget the device on your smartphone/tablet's Bluetooth settings and try pairing again.
  • Ensure no other devices are connected to the mixer via Bluetooth.
• USB Recording/Playback Problems:
  • Ensure the USB drive is formatted correctly (FAT32 is usually compatible).
  • For recording, ensure there is at least one MP3 file on the USB drive.
  • Verify that the correct input/output device is selected in your recording software for PC recording.

Specifications

Warranty & Support

Genuine Phenyx Pro audio products come with a 12-month manufacturer assurance and supportive customer service. For troubleshooting or replacement of discontinuous/defective parts, please contact Phenyx Pro customer service.

You can also refer to the official User Manual (PDF) for more detailed information.