Velodyne Acoustics SC-602 - Manual (Page 9)

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SC-602 Amplifier User’s Manual
(11) IR Input
An IR repeater can be connected to this mini-jack.
(12) 12V Trigger
When this mini-jack is connected, the unit remains in power-off mode until 12 volts is
supplied across the two leads. Polarity is irrelevant.
(13) RS-232 In
Use this port to communicate with an RS-232 controlled touch panel system. See Appendix
A for an explanation of the use of the serial port, available commands and their formats.
(14) Signal Sensing Auto On/Off Switch
With this switch in the “standby” position, your subwoofer can be safely left with the main
power switched on continuously. The subwoofer will turn itself on automatically when an audio
signal is present. If no signal is present for approximately 10 minutes, the unit will switch to
standby mode. While in standby mode, your subwoofer amplifier will draw very minimal
power. This function can be disabled by leaving the switch in the “always on” position.
(15) Speaker Level Input Terminals
Connect these input terminals to the speaker output terminals of your amplifier or receiver.
If you use this method of connection, make sure to select the “large” speaker option in the
receiver’s speaker set-up menu.
(16) Speaker Level Output Terminals
These connections send a crossed-over speaker-level signal to the front speakers. When
connected in this fashion, your satellite speakers will be crossed over at 80 Hz. This removes
the task of reproducing frequencies below 80 Hz from your satellites, enabling them to do a
better job reproducing high frequencies.
You may also connect your satellites directly to your receiver or amplifier along with the
subwoofer if you wish to bypass this crossover.
An example of a speaker-level connection is shown in Figure 3.
Caution!!!
To avoid damage to your SC-602 amp and subwoofer, be sure to maintain correct polarity when
making all speaker connections; red (positive) to red, and black (negative) to black. Be sure that
all connections are tight, and that there are no loose strands or frayed wires.