background image

8

Operation

6. 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 over-driving a channel
or prematurely mixing in an audio input
source, start with the following settings:

• All volume slide controls set to 0.

• Both 

ASSIGN

 switches set to 

OFF

.

• All

 

GAIN

 

knobs set mid level.

• All

 

HIGH

, 

MID

,

 

and

 

BASS

 

controls,

 

CUE

LEVEL

DJ MIC LEVEL

AUX

 

LEVEL

,

SEND

RECEIVE

, 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

AUX

CH1

CH2

,

CH3

CH4

RECEIVE

 input, and sound effects.

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 it to 

STEREO

Presetting the Channel Inputs

Follow these steps to preset each channel
input you plan to mix.

Notes:

• 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 preset
every channel input. Decide which
source(s) you want to preset and mix,
then preset those inputs only.

• While you adjust the input signal levels

for channels 1, 2, 3, and 4, either use
the headphones or turn up the receiver/
amplifier's volume to a comfortable lis-
tening level (not necessarily the final
usable level). 

• Do not play a quiet portion of music

while you adjust the volume levels, oth-
erwise the volume levels for channels 1,
2, 3, and 4 will be over-driven during the
loud portions of the music. 

1. Set the channel selector to the desired

input source. 

2. Start playback of the selected input

source. 

3. Adjust the 

HIGH

MID

, and 

BASS

 controls

as desired. See “Using the Tone Con-
trols” on Page 11. 

Note: If you are using an external equal-
izer, leave the tone controls set to 

0

 and

adjust the tone on the external equalizer.

4. Slowly slide up the channel volume con-

trol until you get a reading of up to 

0

 on

both VU meters. 

Important: Note the channel volume level
slide control's setting for the selected audio
source, so each time you want to mix that
source you can slide the volume control to
the correct setting.

32-3008.fm  Page 8  Thursday, April 6, 2000  4:03 PM

Summary of Contents for 32-3008

Page 1: ...Owner s Manual Please read before using this equipment SSM 1750 4 Channel Stereo Audio Mixer 32 3008 fm Page 1 Thursday April 6 2000 4 03 PM...

Page 2: ...cond Input Source 11 Notes on Mixing 11 Using the Special Controls 11 Using the Tone Controls 11 Using Gain 11 Setting the Sound Balance 12 Using a Microphone 12 Using an XLR Microphone 12 Using an AU...

Page 3: ...SERVICE ABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL This symbol is intended to alert you to the presence of uninsu lated dangerous voltage within the product s enclosure that might be of...

Page 4: ...combinations 1 DJ MIC lets you connect a balanced low impedance microphone with an XLR plug 2 BASS MID HIGH let you adjust the tone of the selected input for customized sound 3 GAIN individual control...

Page 5: ...lor the sound to compensate for a location s conditions or for personal preference 20 VU Volume Unit two meters indi cate the total stereo output signal levels 21 Stereo Line Outputs let you connect t...

Page 6: ...tape deck s left and right line input jacks matching left to left and right to right CONNECTING INPUTS You can connect up to ten audio input sourc es such as cassette tape decks CD players tuners two...

Page 7: ...of stereo headphones not supplied with a 1 4 inch 6 35 mm plug to the PHONES jack on the mixer s lower right corner Your local Radio Shack store carries a wide selection of headphones Listening Safel...

Page 8: ...hannel Inputs Follow these steps to preset each channel input you plan to mix Notes If you did not connect an input source to every jack or do not want to mix every input source connected to the mixer...

Page 9: ...ou want to mix the microphone you can set the control to the correct setting Notes If it was necessary to set DJ MIC LEVEL or AUX LEVEL all the way to 10 in order to get a reading of up to 0 on the VU...

Page 10: ...sourc es set all volume level controls to 0 To avoid sudden and inaudible sound out puts from any audio devices that you con nect to the mixer be sure to set their power controls to off and any tone c...

Page 11: ...e 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...

Page 12: ...you are not using an AUX microphone set AUX MIC LINE to LINE This lets you mix the output from the device connected to AUX LINE MONO jacks Using TALKOVER To use the microphone and reduce other au dio...

Page 13: ...ying the Signal from the Sound Effect Device To play signals from a device connected to the EFFECT jacks set the RECEIVE switch to ON When you are not using the connected inputs set the RECEIVE switch...

Page 14: ...river unscrew the fuse compartment cap on the back of the mixer 2 Remove the old fuse and replace it with an identical fuse Caution Never use a fuse of a different type or rating 3 Replace the fuse co...

Page 15: ...e 10dB at Center BASS Boost Cut Range 10dB at Center ECHO Delay Time 50 120ms TALKOVER Attenuation 8 to 38 dB Power Source AC 120V 60Hz 20 Watt Power Fuse 0 5 Amp 250 Volts Dimensions HWD 4 7 16 19 11...

Page 16: ...t during the warranty period take the product and the RadioShack sales receipt as proof of purchase date to any RadioShack store RadioShack will at its option un less otherwise provided by law a corre...

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