9
1. Power LED - Indicates amplifier power, either in High Power or
Auto High
Current.
2. Clip Indicators - Indicates the signal output level is too high and the output
stage of the amplifier is clipping.
3. Subsonic, Hawkins Bass Control, H.P. XOVER Switch - Selectable high
pass filter frequency range. Select “SUB SONIC” to engage the Sub Sonic
filter with no boost. Use the knob indicated by callout #12 to set the frequency:
13-30Hz). Select “Hawkins Bass Control” to engage the Sub Sonic filter with
available boost. Use the knob indicated by callout #12 to set the frequency:
30 Hz to 70 Hz. Select “H.P. XOVER” to engage the amplifier’s high pass filter
for running satellite speakers. Use the knob indicated by callout #12 to set
the frequency: 70-160 Hz.)
4. Low Pass XOVER Switch - Selectable low pass filter for driving subwoofers.
Use the knob indicated by callout #13 to set the low pass frequency.
Note:
Do not have the “L.P. XOVER” and the “H.P. XOVER” engaged at the same
time.
5. MONO/SUM/ST Switch - “MONO” for bridged mono operation with a single
input signal (right channel only). “SUM” for bridged mono operation sum-
ming two input signal (left and right). “ST” for normal stereo operation.
6. Left Channel Balanced/Unbalanced Input Selector - Select “BALANCED”
to use the 6 pin Balanced signal input. Select “UNBALANCED” to use the
RCA signal inputs.
7. Right Channel Balanced/Unbalanced Input Selector - Select “BALANCED”
to use the 6 pin Balanced signal input. Select “UNBALANCED” to use the
RCA signal inputs.
8. RCA Inputs - Right and Left channel RCA (Unbalanced) inputs.
9. Balanced Signal Input Connector - 6-Pin Balanced input connector for use
with the Soundstream BLT/BLT4 Balanced Line Transmitter.
10. Input Levels - Independent Left and Right input level controls.
11. Hawkins Bass Control “Boost” Adjustment - Varies from 0 to +9 dB of
boost when the Hawkins Bass Control circuit is engaged.
12. High Pass Filter Control Adjustment - Frequency adjustment control for the
High Pass filter, the Hawkins Bass Control filter, or the Sub Sonic filter.
13. Low Pass Filter Control Adjustment - Frequency adjustment control for the
Low Pass filter.
14. Line Outputs - Line level RCA outputs to drive an external amplifier (Note:
The outputs are full-range.)
15. Speaker Connection Terminal - Speaker connections for Ch’s 1 & 2.
16. REMOTE - Remote turn-on input from the head unit. Accepts +12V.
17. GND - Main ground connection. Bolt to a clean chassis point in the vehicle.
18. +12V - Connected to a fuse or circuit breaker, then to the battery’s positive
terminal.
19. FUSE - Main power supply fuse. Warning: Replace only with the same value
fuse!
KEY TO CALLOUTS
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