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32-2058
4-Channel Audio Mixer
with 3 Band EQ Controls & Echo
Your RadioShack 4-Channel Audio Mixer with 3 Band EQ
Controls & Echo is perfect for mixing sound from multiple
playback sources such as a microphone, tuner, CD player,
turntable, or the audio output from a VCR. It is ruggedly
constructed for home or professional use. Its volume
controls let you adjust sound for playing through your
speaker system or for recording.
Thank you for purchasing your 4-Channel Audio Mixer from
RadioSh
Summary of the content on the page No. 2
The Basics contents connections ...............................................6 using your mixer ......................................9 mixing inputs .........................................13 using a microphone ................................15 using the special controls .......................16 using echo ..............................................18 frequently asked questions ....................20 replacing the fuse ...................................21 specifications .........
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The Basics IMPORTANT SAFETY INSTRUCTIONS Read Instructions — All safety and operating instructions should be read before the appliance is operated. Retain Instructions — The safety and operating instructions should be retained for future reference. Heed Warnings — Follow all warnings on the appliance and in the operating instructions. Cleaning — Unplug this appliance from the wall outlet before cleaning. Use only a damp cloth for cleaning. Do not use liquid or aerosol cleaners. Water and Mo
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The Basics try reversing the plug. If the plug still doesn’t fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. Power-Cord Protection — Route power-supply cords so they are not likely to be walked on or pinched by items placed on or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance. Cleaning — The appliance should be cleaned only as recomme
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The Basics * When the power-supply cord or plug is damaged. * If liquid has been spilled or objects have fallen into the appliance. * If the appliance has been exposed to rain or water. * If the appliance does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions, as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the appli
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The Basics connections A sudden high output from the mixer could damage your hearing or damage the audio devices connected to your mixer. Before connecting to AC power, turn off your mixer and all audio devices connected to your mixer. connecting outputs OUTPUT AMP L/R — use an audio patch cord (not supplied) to connect your receiver or amplifier to your mixer (match left to left, right to right). The sound is output to your stereo sound system. OUTPUT AMP L/R — use an audio patch cord (
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The Basics connecting inputs LINE 1, 2, 3, 4, 5, 6 — connect up to six audio AUX LINE MONO — connect a sources to your mixer. Do not connect mono input source here. audio sources with line-level outputs to the PHONO 1, PHONO 2, or AUX MIC jacks. GND AUX MIC — connect a EFFECT SEND/RECEIVE — connect a microphone with a sound effect device to EFFECT SEND 1 / -inch plug here. (output) and EFFECT RECEIVE (input). 4 PHONO 1/2 — connect up to two low-level audio sources to your mixer. If yo
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The Basics connecting a lamp, headphones and mic DJ MIC — connect a microphone 12V/3W MAX LAMP — connect a 12V with an XLR plug here. DC/3W BNC lamp (not supplied) to light up the mixer’s controls. PHONES — connect a pair of stereo headphones 1 (not supplied) with a / -inch plug. You can then 4 listen and locate a section of music to mix. listening safely Do not listen at extremely high volume levels. Extended, high-volume listening can lead to permanent hearing loss. To protect your h
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The Basics using your mixer 1. Set your output device’s volume to minimum and turn it on. 2. Press POWER to turn on the mixer. 3. Turn on the audio input sources you want to mix. 4. Preset the input signal levels (see “presetting input signal levels”). 5. Mix the audio input sources (see “mixing the inputs” on Page 13). 6. When you are finished, turn off all connected audio devices (amplifiers, tape decks, and so on), and press POWER to turn off the mixer. presetting input signal levels
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The Basics All HIGH, MID, and BASS controls to 0. SEND, RECEIVE, and MASTER All GAIN controls set midway set to 0. between MIN and MAX. DJ MIC LEVEL and AUX LEVEL to 0. CUE LEVEL to 0. CH1, CH2, CH3, and CH4 to 0. SEND ASSIGN and CUE ASSIGN to OFF. presetting audio inputs Before mixing your audio sources (devices connected to LINE 1, PHONO 1, PHONO 2, LINE 2, LINE 3, LINE 4, LINE 5, LINE 6), you must set their input signal level to each channel input (CH1, CH2, CH3, etc.). You do not hav
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The Basics 5. Slowly slide up the channel volume control (CH) until you get a reading of up to 0 dB on both LED meters. 6. Stop playback of the selected input source. 7. Repeat steps 1-7 for each audio input you plan to mix. Notes: • Write down the CH setting for each audio source. Then, when you want to mix that source, you can adjust its volume to that setting. • If it was necessary to set CH 1 to maximum to get a reading of 0 dB or less on the LED meter, slide CH 1 down to about 8 and
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The Basics 2. While talking, adjust DJ MIC LEVEL or AUX LEVEL until you get a reading of less than 0 dB on both LED meters. See “using an XLR microphone” on Page 16. Notes: • Write down the DJ MIC LEVEL or AUX LEVEL setting. Then, when you want to mix with the microphone, you can adjust it to this setting. • If it was necessary to set DJ MIC LEVEL or AUX LEVEL to 10 in order to get a reading less than 0 dB on the LED meter, adjust either one to 8 and adjust DJ MIC GAIN to get a readin
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Beyond the Basics mixing inputs You can select any two of your connected audio sources and mix them so one or both play through your sound system. Mixing consists of three parts: playing an input source, monitoring a second input source, and switching to a second input source. playing an input source 1. Set ASSIGN A to the desired audio source (1, 2, 3, 4 correspond to CH 1, CH 2, CH 3, CH 4). PHONO 1/LINE 1 PHONO 2/LINE 2 LINE 3/LINE 4 LINE 5/LINE 6 CUE ASSIGN CROSS FADER CUE LEVEL
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Beyond the Basics monitoring a second input source Monitoring a second input source requires listening to an input source, finding the desired audio section you want to mix, and adjusting it’s sound level to match the volume of the first input source (the one designated ASSIGN A). 1. Connect and put on headphones. You can listen to one source through the headphones while the other source plays over the sound system. 2. Set ASSIGN B to the second input source (1, 2, 3, 4 correspond to CH 1,
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Beyond the Basics using a microphone using an XLR microphone To mix the XLR microphone with other audio input sources, adjust DJ MIC LEVEL to increase or decrease microphone volume. Set DJ MIC LEVEL to 0 when you are not using the DJ microphone. using the AUX microphone To mix the AUX microphone with other audio input sources, set AUX MIC/LINE to MIC. Adjust AUX LEVEL to increase or decrease microphone volume. When you are not using the AUX microphone, set AUX MIC/LINE to LINE. When se
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Beyond the Basics using the special controls tone Your mixer has a set of tone controls for each microphone and channels 1– 4. You can tailor the high, middle, and low frequency sounds for each. For normal sound, leave BASS, MID, and HIGH set to 0. Rotate HIGH, MID, or BASS toward +10 to increase, or toward –10 to decrease the high, middle, and low frequency sounds. gain Since the input level of each source is different, you can use GAIN to fine tune each input’s volume. Rotate the desi
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Beyond the Basics setting the sound balance BALANCE lets you adjust the sound balance between the left and right speakers. If your speakers are properly positioned and your listening area is centered between the speakers, the center setting of the control is usually the best. If the sound seems to be louder from one speaker, adjust BALANCE until the output sounds equally from both speakers. 17
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Beyond the Basics using echo The mixer plays echo effects, and lets you adjust echo delay, number of echo repeats, and the echo’s volume. The echo is applied to the sound before all the inputs are mixed. 1. Set ECHO to MIC to apply the echo effect to the microphones and AUX LINE input. 2. Set ECHO to MUSIC to apply the echo effect to the channel outputs. 3. Set ECHO to OFF to turn off the echo effect. adjusting echo delay, repeat, and volume ECHO DELAY lets you adjust the time interval
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Beyond the Basics playing input signals through the sound effect device You can play inputs selected by the channel selectors (DJ MIC or AUX) through other sound effect devices connected to the mixer, and control playback through the mixer. To play selected inputs through the sound effect device, set SEND ASSIGN to the selected input. SEND lets you adjust the volume of the selected sound effect device without changing the device’s volume. Rotate SEND toward 10 to raise the volume and
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Beyond the Basics frequently asked questions Q - I set up my mixer using the instructions. Why doesn’t it work? A - Make sure you are connected to a “live” AC outlet. - Verify that all sources are securely connected. - Check the fuse and replace it if needed. Q - Why is there no signal from my input source? A - Make sure TALK OVER is turned OFF. - Make sure the input source is turned on. - Check the mixer and source control settings. - Check connections between the mixer and input so
