IMG MPX-622 Stereo Audio Mischpult Stereo Audio Mixer Instruction Manual

IMG MPX-622 Stereo Audio Mischpult Stereo Audio Mixer

Specifications

• Model: MPX-622 / SW
• Power Supply: 230V~ / 50 Hz
• Channels: 4
• Input Types: MIC, PHONO, LINE CD, LINE A, LINE B

Product Usage Instructions

Front Panel Controls

Front panel controls include MIC Input, EQ controls, and channel controls for CH1 to CH4.

Rear Panel Connections

Rear panel connections include MAINS power input, OUTPUT options, REC, and AMP connections for each channel.

Frequently Asked Questions

How do I connect microphones to the mixer?

To connect microphones, use the MIC INPUT ports on the front panel labeled MIC 1 and MIC 2. Adjust the levels using the EQ controls.

How can I mix stereo audio sources?

To mix stereo audio sources, use the LINE CD, LINE A, and LINE B channels on the front panel. Adjust the levels for each channel accordingly.

What is the purpose of the CROSSFADER?

The CROSSFADER allows you to smoothly transition between different audio sources or channels for seamless mixing.

Stereo Audio Mixer

• These instructions are intended for users with basic knowledge of audio technology.
• Please read the instructions carefully prior to operation and keep them for later reference.

Overview

Front panel

1. Mono inputs MIC 1 and MIC 2 (6.3 mm jacks) to connect microphones
2. Bass controls and treble controls for the microphone channels
3. Volume controls for the microphone channels
4. Input selector switches for the channels CH 1 – CH 4
5. Volume controls (faders) for the input channels CH 1 – CH 4
6. Crossfader for fading between two of the channels CH 1 – CH 4; the respective chan-nels are selected with the two C.F. ASSIGN switches (7)
7. Selector switches C.F. ASSIGN A and B to select two of the channels for crossfading
8. To deactivate the crossfading function, set both switches to position 0.
9. Talkover switch for microphone announcements: in the TALK position, the levels of channels CH 1 – CH 4 are attenuated by 15 dB.
10. Master volume control (fader) for the output AMP (19)
11. 3-way equalizer for the outputs; consisting of the controls HIGH, MID, and LOW
12. Stereo VU meter for the output AMP (19) 12 POWER LED
13. POWER switch
14. PFL buttons to monitor the input channels CH 1 – CH 4 and the master channel via headphones
15. Volume control for the headphones connected to the jack (16)
16. 6.3 mm jack to connect stereo headphones (impedance ≥ 8 Ω)
    • Rear panel
17. Mains cable for connection to ~ 230 V / 50 Hz
18. Stereo output REC (RCA jacks) to connect an audio recorder; the recording level is independent of the position of the MASTER fader (9)
19. Stereo master output AMP (RCA jacks) to connect an amplifier
20. Stereo inputs LINE A, LINE B, CD, and LINE (RCA jacks) for the channels CH 1 – CH 4 to connect devices with line level (e. g. CD / MP3 player)
21. Stereo inputs PHONO (RCA jacks) for the channels CH 1 and CH 2 to connect turntables with a magnetic system
22. Connection for the common ground point, e.g. for turntables.

Safety Notes and Instructions for Use

• The device corresponds to all relevant directives of the EU and is therefore marked with.
• The device corresponds to the relevant UK legislation and is therefore marked with UKCA.
• WARNING The device uses dangerous mains voltage. Leave servicing to skilled personnel only. Inexpert handling may result in electric shock.
• The device is suitable for indoor use only. Protect it against dripping water and splash water, high air humidity, and heat (admissible ambient temperature range 0 – 40 °C).
• Do not place any vessels filled with liquid, e. g. drinking glasses, on the device.
• Immediately disconnect the mains plug from the mains socket

1.  if there is visible damage to the device or the mains cable,
2. if a defect might have occurred after the device was dropped or suffered a similar accident,
3. if malfunctions occur.

• The device must in any case be repaired by skilled personnel.
• A damaged mains cable must be replaced by skilled personnel only.
• Never pull the mains cable to disconnect the mains plug from the mains socket; always seize the plug.
• For cleaning only use a dry, soft cloth; never use chemicals or water.
• For UK use only
• The main plug must only be replaced by skilled personnel.
• The wires in this mains cable are colored under the following code:
• blue = neutral
• brown = live
• If the colors of the wires in the mains cable do not correspond with the colored markings identifying the terminals in your plug, proceed as follows:

1. Connect the blue wire to the terminal marked with the letter N or colored black.
2. Connect the brown wire to the terminal marked with the letter L or colored red.

• No guarantee claims for the device and no liability for any resulting personal damage or material damage will be accepted if the device is used for purposes other than originally intended, if it is not correctly connected or used or if it is not expertly repaired.
• If the device is to be put out of opera-tion definitively, dispose of the device in accordance with local regulations.

Applications

• The audio mixer with four stereo input channels and two mono microphone channels is suited for any desired DJ applications for professional or private use and applications in PA systems.
• The mixer can be used as a tabletop device or be installed into a rack (482 mm / 19”). For rack installation, two rack units = 89 mm are necessary.

Before Operation

Prior to connecting/disconnecting, switch off all devices concerned.

1. Connect microphones to the input jacks (1) of the microphone channels MIC 1 and MIC 2.
2. Connect stereo audio sources to the corre-sponding input jacks of channels CH 1 – CH 4 (white jack L: left channel; red jack R: right channel):
   • LINE A, LINE B, CD, and LINE (20) to connect devices with line level (e. g. tuner, CD / MP3 player, cassette player)
   • PHONO (21) to connect turntables with mag-netic system
3. Set the input selector switches (4) for the channels CH 1 – CH 4 to the corresponding position.
4. Connect the amplifier to the output jacks AMP (19).
5. For any audio recordings, connect a recorder to the output jacks REC (18). The recording level is independent of the position of the MASTER control (9).
6. Connect the plug of the mains cable (17) to a mains socket (~ 230 V / 50 Hz).
7. Before switching on the mixer, set the MASTER control (9) to the minimum position to avoid a loud switch-on. Then switch on the mixer with the switch POWER (13). The POWER LED (12) will light up.
8. Switch on the devices connected.

Operation

• Before using the device for the first time, set all equalizer controls (2 and 10) to mid-position and the talk-over switch (8) to OFF. Set both C.F. ASSIGN switches (7) to position 0 (crossfading function deactivated).
• CAUTION Never adjust the audio system and the headphones to a very high volume. Permanent high volumes may damage your hearing!

Mixing the stereo audio sources

1. Use the MASTER fader (9) to adjust the total volume of all audio sources connected. For optimum adjustment of the input chan-nels, set the MASTER fader to approx. 2⁄3 of its maximum position, e. g. position 7.
2. With the faders (5), adjust the volume for the input channels CH 1 – CH 4. The VU meter (11) shows the signal level at the master output AMP (19). At 0 dB, the mixer is set to maximum gain. In case of overload, the red LEDs of the VU meter light up.
3. Adjust the desired tone for the two outputs REC (18) and AMP (19) with the 3-way equalizer (10): the controls can be used to attenuate or boost the LOW, MID, and HIGH frequen-cies by up to 10 dB. With the controls in mid-position, there is no effect on the frequency response.
4. The crossfader (6) is used to fade between two of the channels CH 1 – CH 4. To do so, select the desired channels with the C.F.
   • ASSIGN switches A and B (7): C.F. ASSIGN A: position 1, 2, or 3 to select channel CH 1, CH 2, or CH 3 C.F.
   • ASSIGN B: position 2, 3, or 4 to select channel CH 2, CH 3, or CH 4
   • When the respective switch is in position 0, no channel is selected.
   • When moving the crossfader to the left, the channel selected with the C.F. ASSIGN  A switch is faded in and when moving the fader to the right, the channel selected with the C.F. ASSIGN B switch is faded in.
   • When the fader is in mid-position, both channels are sent to the outputs at the same time. To deactivate the crossfading function, set both C.F. ASSIGN switches to position 0.

Monitoring the channels

• With the monitoring function (PFL = Pre-Fader Listening), it is possible to monitor each input channel CH 1 – CH 4 and the MASTER channel via headphones.
• The level of the signal monitored is independent of the position of the corresponding channel fader.

1. Connect stereo headphones (impedance ≥ 8 Ω) to the jack (16).
2. Press the corresponding PFL button (14) of the channel.
3. Adjust the desired headphone volume with the LEVEL control (15).

Microphone announcements

1. Adjust the desired volume with the LEVEL controls (3) for the microphone channels MIC 1 and MIC 2.
2. Adjust the desired sound with the controls (2): the low (BASS) and high (TREB) frequencies can be attenuated or boosted by up to 10 dB.
3. To make it easier to understand a microphone announcement, the levels of the channels CH 1 – CH 4 can be attenuated by 15 dB. To do so, set the talk over switch (8) to the TALK position. In the OFF position, the talkover function is deactivated.

Specifications

Inputs

• 2 × mic, mono: . . . . . . . . . . 1 mV / 600 Ω
• 2 × phono, stereo: . . . . . . . 3 mV / 50 kΩ
• 6 × line, stereo: . . . . . . . . . 150 mV / 100 kΩ

Outputs

• 1 × amp, stereo: . . . . . . . . . 0.775 V / 600 Ω
• 1 × record, stereo: . . . . . . . 0.775 V / 600 Ω
• 1 × headphones, stereo: . . . ≥ 8 Ω
• Frequency range: . . . . . . . . . 20 – 20 000 Hz
• THD: . . . . . . . . . . . . . . . . . . . 0.1 %
• S / N ratio: . . . . . . . . . . . . . . . 65 dB

Equalizer controls

• 3 × low: . . . . . . . . . . . . . . . ±10dB/100Hz

• 1 × mid . . . . . . . . . . . . . . . ±10dB/1kHz
  3 × high . . . . . . . . . . . . . . . ±10dB/10kHz

• Talkover: . . . . . . . . . . . . . . . . –15dB

• Power supply: . . . . . . . . . . . . ~ 230V/50Hz

• Power consumption: . . . . . . . 10VA

• Ambient temperature : . . . . . 0–40°C

• Dimensions (W × H × D): . . . 482 × 89 × 95mm

• Rack units: . . . . . . . . . . . . . . 2U

• Weight: . . . . . . . . . . . . . . . . 2.4kg

Connections

• Mic: . . . . . . . . . . . . . . . . . . 2 × 6.3mm jack
• Headphones: . . . . . . . . . . . 1 × 6.3mm jack
• All other audio connections: 20 × RCA
• Subject to technical modification.
• All rights reserved by MONACOR ® INTERNATIONAL GmbH & Co. KG. No part of this instruction manual may be reproduced in any form or by any means for any commercial use.
• © MONACOR INTERNATIONAL All rights reserved A-0342.00.04.12.2023
• MONACOR INTERNATIONAL GmbH & Co. KG Zum Falsch 36, 28307 Bremen Germany

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