Radio Shack SSM-1750 Presetting the Input Signal Levels, Presetting the Channel Inputs

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

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.

8 Operation