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1. +12V - Connected to a fuse or circuit breaker, then to the battery’s positive
terminal.
2. GND - Main ground connection. Bolt to a clean chassis point in the vehicle.
3. REMOTE - Remote turn - on input from the head unit. Accepts +12V.
4. Speaker connection Terminal - Speaker connections for satellite CH1&2.
5. Hawkins Bass Control “Boost” Adjustment - Varies from 0 to + 9 dB of
boost when the Hawkins Bass Control circuit is engaged.
6. Subsonic/Hawkins Bass Control Adjustment - Frequency adjustment
control for the Hawkins Bass Control filter or the Sub Sonic filter.
7. Low Pass Filter Control Adjustment- Frequency adjustment control for the
Low Pass Filter for CH1&2 sum X-OVER.
8. High Pass Filter Control Adjustment- Frequency adjustment control for the
High Pass Filter for satellite CH1&2.
9. Input Levels - Input level control variable from 300mV to 5V.
10. RCA Inputs - 1&2 channel RCA inputs.
11. BALANCED Signal Input Connector - Channels 1 & 2 ; 6-pin Balanced signal input
connector for use with the Soundstream BLT Balanced Line Transmitter.
12. Line out - Line level RCA output to drive an external amplifier.
13. Power LED - Indicates amplifier power.
14. Phase Switch - Adjusts the speaker phase to either 0 or 180 degrees.
15. Subsonic/Hawkins Bass Control Switch - Selectable subwoofer enhancement circuit.
Select “SUB SONIC” to engage the Sub Sonic filter with no boost. Use the knob indicated
by callout #6 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 #6 to set the
frequency: 30 Hz to 70 Hz.
16.ST/MO(2)/LP Switch - “MONO” for bridge mono operation with a single input signal
(Channel 2 only). “SUM” for bridged mono operation summing two input signals (1CH and
2CH). “ST” for normal stereo operation.
17. High Pass X-OVER Switch - (Channels 1&2)Select”IN” for use with the internal crossover
or “OUT” for use with external crossover.
18. Mid-Bass/Midrange Select Switch - Selectable mid-bass “LOW” or midrange frequency
control “HIGH” operation.
19. Line output Switch - Select “Full 1.2” (Channel 1.2 full range), “1.2 TRACKING LP”(use
the knob or switch indicated by call out #8, #18) “1.2 LP SUM” (use the sum CH1.2)
Function for the RCA out put.
20. Channel Balanced / Unbalanced Input Selector Switch - Select “Balanced” to use the 6
pin Balanced signal input. Select “Unbalanced” to use the RCA signal inputs.
21. Input Overload Indicators - Indicates the signal input level or input gain level is too high.
KEY TO CALLOUTS
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