3-Channel Stereo Audio Mixer
(320-3009) Operation Faxback Doc. # 41585
1. Set the volume levels on the output devices (receiver/amplifier and
tape deck) to minimum and turn them on.
2. Press POWER to turn on the mixer. The red power indicator lights.
3. Turn on the input sources you want to mix.
4. Using the mixer requires two basic operations:
Presetting the input signal levels
Mixing the audio input sources
5. After you finish mixing, turn down the volume on the output audio
devices, turn off the input and output audio devices (amplifiers, tape
decks, and so on), then press POWER so it pops up to turn off the
mixer. The power indicator turns off.
PRESETTING THE INPUT SIGNAL LEVELS
To avoid accidentally overdriving a channel or prematurely mixing in an
audio input source, make sure you start with the following settings:
Volume slide controls set to 0
Assign A and Assign B set to OFF
Mic Treble, Mic Bass, Cue Level, Treble, MID, Bass, and Master set to 0
Rotate MASTER clockwise and temporarily set it to about the 5th marker.
Note: The MASTER volume control adjusts the overall volume of DJ MIC,
CH 1, CH2, and CH3.
The mixer uses two volume unit (VU) meters to indicate the total stereo
output signal level. For the best results, each input signal level should
normally be set so the VU meters never move into the red range (0 or above).
Distortion is likely to occur on audio peaks if the meter moves into the
red range.
For monaural output, set MONO/STEREO to MONO. For stereo output, set
MONO/STEREO to STEREO.
Presetting the Microphone
1. If your microphone has an ON/OFF control, set it to ON.
2. Set OFF/ON/TALKOVER to ON.
3. While continuously talking, adjust DJ MIC until you get a reading of
up to 0 on both VU meters.
4. Set OFF/ON/TALKOVER to OFF.
Presetting the Channel 1/2/3 Input Sources
Before you mix channels 1, 2, and 3, you must preset the input signal level
for each channel input source (up to six sources).
If you did not connect an input source to every jack or do not want to mix
every input source connected to the mixer's input jacks, you do not need to
follow all the steps in this section. After you decide which source(s) you
want to preset and mix, use this table to determine which steps to follow.
To Preset See Steps
Channel 1 Phono 1 1-4
Line 1 5
Channel 2 Phono 2 6-9
Line 2 10
Channel 3 Line 3 11-14
Line 4 15
Notes:
While you adjust the input signal levels for channels 1, 2, and 3, either
use the headphones or turn up the receiver/amplifier's volume to a
comfortable listening level (not necessarily the final usable level).
Do not play a quiet portion of music while you adjust the volume levels,
otherwise the volume levels for channels 1, 2, and 3 will be overdriven
during the loud portions of the music.
1. To preset the PHONO 1 input source, set PHONO 1/LINE 1 to PHONO 1.
2. Start playback of the selected input source.
3. Slowly slide up the CH 1 volume level slide control until you get a
reading of up to 0 on both VU meters.
Important: Write down or remember the CH 1 volume level slide control's
setting for the selected audio source, so each time you
want to mix that source you can slide the CH 1 volume
level slide control to the correct setting.
Note: If it was necessary to set the CH 1 volume level slide control all
the way to 10 in order to get a reading of up to 0 on the VU meter,
then slide CH 1 down to about 8 and rotate MASTER clockwise until you
get the reading of 0 on the VU meters.
4. Stop playback of the selected input sources.
5. To preset the LINE 1 input source, set PHONO 1/LINE 1 to LINE 1. Then
repeat Steps 2-4.
Note: If you have to readjust MASTER when performing step 3, remember
that this affects the level of the previously preset input
sources. You must readjust those sources until you get a reading
of up to 0 on the VU meters for each.
6. To preset the PHONO 2 input source, set PHONO 2/LINE 2 to PHONO 2.
7. Start playback of the selected input source.
8. Slowly slide up the CH 2 volume level slide until you get a reading of
up to 0 on both VU meters.
Important: Write down or remember the CH 2 volume level slide control's
setting for the selected audio source, so each time you want
to mix that source you can slide the CH 2 volume level slide
control to the correct setting.
Note: If it was necessary to set the CH 2 volume level slide control all
the way to 10 in order to get a reading of up to 0 on the VU meter,
then slide CH 2 down to about 8 and rotate MASTER clockwise until
you get the reading of 0 on the VU meters.
9. Stop playback of the selected input source.
10. To preset the LINE 2 input source, set PHONO 2/LINE 2 to LINE 2.
Then repeat Steps 7-9.
Note: If you have to readjust MASTER when performing step 8, remember
that this affects the level of the previously preset input sources.
You must readjust those sources until you get a reading of up to
0 on the VU meters for each.
11. To preset the LINE 3 input source, set LINE 3/LINE 4 to LINE 3.
12. Start playback of the selected input source.
13. Slowly slide up the CH 3 volume level slide control until you get a
reading of up to 0 on both VU meters.
Important: Write down or remember the CH 3 volume level slide
control's setting for the selected audio source, so each
time you want to mix that source you can slide the CH 3
volume level slide control to the correct setting.
Note: If it was necessary to set the CH 3 volume level slide control all
the way up to 10 in order to get a reading of up to 0 on the VU
meter, then slide CH 3 down to about 8 and rotate MASTER clockwise
until you get the reading of 0 on the VU meters.
14. Stop playback of the selected input source.
15. To preset the LINE 4 input source, set LINE 3/LINE 4 to LINE 4. Then
repeat Steps 12-14.
Note: If you have to readjust MASTER when performing Step 13, remember
that this affects the level of the previously preset input sources.
You must readjust those sources until you get a reading of up to 0
on the VU meters for each.
16. To prevent prematurely mixing audio sources, set all volume level
slide controls to 0.
Checking the Sound
1. Select one of the input sources, then start playback of the selected
source.
2. Set the volume level slide control to the position you determined
during presetting. The VU meters should show a reading of up to 0 dB.
3. Turn up the receiver/amplifier's volume until it reaches the desired
level for the location or event where the mixer will be used (this can
vary).
4. Adjust BASS, MID, and TREBLE to get the desired sound.
Note: If adjusting BASS, MID, and TREBLE causes the VU meters to exceed 0
dB, rotate MASTER counterclockwise until the reading returns to 0.
Then adjust your output device (amplifier) volume accordingly.
5. Stop playback of the selected input source.
Note: Do not adjust MASTER after checking the sound.
MIXING THE INPUTS
You can connect input signals from up to six audio sources, select any two,
then mix them so only one or both play through your sound system.
Mixing requires three operations:
Playing one input source
Monitoring the next input source
Switching to the next input source
You can play either of the two selected sources first.
Notes:
Ensure the volume level slide control for the other input channel source
is set to 0.
The CUE ASSIGN switches are push-on and push-off. You can select more than
one at a time.
Playing One Input Source
1. Set ASSIGN A to the desired source, then set CROSS FADER to A.
2. Set the input source selector to the preset input source you want to
play first through your sound system.
3. Make sure the first input source's volume level slide control is set to
the correct preset position.
4. Start playback of the input source.
Monitoring a Second Input Source
Monitoring a second input source's signal level requires selecting the input
source that is not currently playing, finding the desired section you want
to mix, then adjusting that source's sound level so it matches the volume
level of the source currently playing.
1. Connect and put on headphones.
Note: You can listen to one channel through the headphones while the
other channel is playing through the sound system.
2. Set ASSIGN B to the second input source.
3. Press CUE ASSIGN for the second input source.
4. Set the input source selector to the input source you want to monitor.
5. Start playback of the input source you want to play next through your
sound system.
6. If necessary:
Adjust CUE LEVEL to a comfortable listening level.
Adjust the second input source volume slide control to the correct
preset position.
7. Set the input device to the desired section of music, then stop or
pause the input device.
Switching to the Second Input Source
1. Start playback of the second input source.
2. When you are ready to play its sound through your sound system, slide
CROSS FADER from A to B.
Slide CROSS FADER:
To the left to fade in the channel selected by ASSIGN A and fade out
the channel selected by ASSIGN B.
To the right to fade in the channel selected by ASSIGN B and fade out
the channel selected by ASSIGN A.
To the center to equally mix the two.
Notes on Mixing
If you set CROSS FADER to A to play the channel selected by ASSIGN A, then
you must set CUE ASSIGN to CH 1 to monitor CH 1, to CH 2 to monitor CH 2,
to CH 3 to monitor CH 3, to CH 4 to monitor CH 4, and to MIC to monitor
DJ MIC. The same applies when you set CROSS FADER to B.
To mix any two inputs selected by the ASSIGN switches, set each ASSIGN
switch to the desired channel. Then use CROSS FADER to mix the two.
Do not slide CROSS FADER to the center if you want to monitor one channel
while the other is playing. Otherwise, the sound from the channel you
monitor will also be heard through your sound system. Instead, slide
CROSS FADER to the channel you are not monitoring. For example, to monitor
channel 1 (selected by ASSIGN A) while channel 2 (selected by ASSIGN B) is
playing, slide CROSS FADER to B.
Use CUE/PGM to listen to the input controlled by the CUE ASSIGN switch and
what is playing on the currently selected output device. When CUE/PGM is
set to CUE, you only hear the channel selected by the CUE ASSIGN switches.
When CUE/PGM is set to PGM, you only hear what is playing on the currently
selected output device. Rotate CUE/PGM to listen to both inputs at the
same time.
USING TALKOVER
When you are not using the microphone, leave OFF/ON/TALKOVER set to OFF.
The microphone's input is turned off and all other audio input sources are
unaffected.
If you want to use a microphone:
Set OFF/ON/TALKOVER to ON to mix the microphone equally with the other audio
input sources.
Set OFF/ON/TALKOVER to TALKOVER to mix the microphone at a higher level than
the other audio input sources.
Your voice sounds clearly through the microphone, but all the other audio
input sources sound at a lower level. (This is useful for paging.)
USING THE TONE CONTROLS
Your mixer has one set of tone controls for the microphone and another
set for channels 1, 2, and 3. You can tailor the high and low frequency
sounds for the microphone and tailor the high, low, and mid frequency
sounds for channels 1, 2, and 3.
For normal sound, leave BASS, MID, and TREBLE (or MIC BASS and MIC TREBLE
for the microphone) set to 0.
Rotate TREBLE (or MIC TREBLE) toward +10 to increase, or toward -10 to
decrease the high frequency sounds.
Rotate MID toward +10 to increase or toward -10 to decrease the middle
frequency sounds.
Rotate BASS (or MIC BASS) toward +10 to increase or toward -10 to decrease
the low frequency sounds.
(km-09/12/97)
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