Velodyne SUBCONTRACTOR SC-600 Amplifier User Manual - page 12
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6 - Subcontractor Series User’s Manual
(11) IR Input
AnIRrepeatercanbeconnectedtothismini-jack.
(12) 12V Trigger
Whenthis2-conductormini-jackisconnected,theamplifierremainsinpower-offmodeuntilthetrigger
isapplied.Thecorrecttriggeris+12Vonthetipoftheconnectorrelativetothegroundedsleeve.
(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
oncontinuously.Thesubwooferamplifierwillturnitselfonautomaticallywhenanaudiosignalispresent.
If no signal is present for approximately 10 minutes, the unit will switch to standby mode. While in
standbymode,yoursubwooferamplifierwilldrawveryminimalpower.Thisfunctioncanbedisabledby
leaving the switch in the “always on” position.
(15) Speaker Level Input Terminals
IfyoudonotconnecttheSC-602amplifiertoyourreceiverusingthelineinput/LFEinputconnection
(Item10),connecttheseinputterminalstothespeakeroutputterminalsofyouramplifierorreceiver.If
you use this method of connection, make sure to select the “large” speaker option in the receiver’s set-
up menu. Also, select the option for no subwoofer. This will make sure all bass and lFe information is
fedthespeakeroutputsandbereceivedbyyourSC-600Damplifier.
Note: Using both speaker terminals and the line level inputs is not recommended, as this may damage the SC-
600Damplifieroryourreceiver.
(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 lower bass
frequenciesfromyoursatellites,enablingthemtodoabetterjobreproducinghighfrequencies.
Youmayalsoconnectyoursatellitesdirectlytoyourreceiveroramplifieralongwiththesubwooferifyou
wish to bypass this crossover.
An example of a speaker-level connection is shown in Figure 3.