Soundstream Technologies HRU. 2, HRU. 4 owner manual KEY to Callouts

KEY TO CALLOUTS

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 + 9dB 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 Subsonic filter.

7.Low Pass Filter Control Adjustment - Frequency adjustment control for the Low Pass Filter, 40 - 160Hz.

8.High Pass Filter Control Adjustment - Frequency adjustment control for the

High Pass Filter, 50 - 500Hz or 500 - 5kHz.

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 “SUBSONIC” to engage the Subsonic filter with no boost. Use the knob indicated by callout #6 to set the frequency: 13- 30Hz. Select “Hawkins Bass Control” to engage the Subsonic filter with available boost. Use the knob indicated by callout #6 to set the frequency : 30Hz to 70Hz.

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.Frequency Range Selection switch - Switching to “LO” selects the 50-500Hz range. Switching to “HI” selects the 500-5kHz range.

19.Line Output Switch - Select “1-2 FULL” for full range signal outputs.

Select “1-2 TRACKING LP” for a lowpass signal at the frequency for highpass at #8. Select “LP SUM 1-2” for a summed signal channels 1-2 (more bass output signal).

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.

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