Soundstream Technologies 255, 555, 355 specifications KEY to Callouts

KEY TO CALLOUTS

1.Power LED - Indicates amplifier power.

2.Subsonic / Hawkins Bass Control Switch - Select “SUB SONIC” to engage the Sub Sonic filter at 13 Hz. Select “HAWKINS BASS CONTROL” to engage the subwoofer channel’s high pass filter @I 45 Hz with +6 dB boost for optimum bass.

3.Subwoofer Channel Input Select - Selectable inputs; “CH l-4” for non- fading bass control, “CH3&4” for front to rear fading bass control.

4.Channels 3&4 Input Select - Selectable inputs from internal (CH l&2) or external (CH 38~4 local RCA inputs).

5.Amp Mode Switch (Channels 1-4)- Select “3CH”for bridged mono output in 3 channel operation (use input channels 1 & 2). Select “5CH”for stereo output in 5 channel operation.

6.Inputs - Right and left channel RCA inputs for channels 3&4.

7.Input Level - Channels 3&4 input level control.

8.ltiputs - Right and left channel RCA inputs for channels l&2.

9.Input Level - Channels l&2 input level control.

10.Sub Input Level - Subwoofer channel input level control.

11.Low Pass Filter Control Adjustment - (Subwoofer Channel) crossover frequency control for the internal low pass filter.

12.Speaker Connection Terminal - Speaker connections for CH l-4 & Subwoofer Channel.

13.GND - Main ground connection. Bolt to a clean chassis point in the ve- hicle.

14.REMOTE - Remote turn-on input from the head unit. Accepts +12V.

15.+12V - Connected to a fuse or circuit breaker, then to the battery’s posi- tive terminal.

16.Main Fuse - Main power supply fuse.

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