Sub out or rear out


hispls

CarAudio.com Veteran
10+ year member
Sep 10, 2009
11,290
425
Central Maine
"Sub" channel will normally be connected to its own crossover, boost, and phase features. Any head unit worth using to drive an amplifier will have front, rear and sub pre-outs, I would be suspicious of anything that didn't have all those sets, they're typically very entry level and may be of dubious quality when it comes time to actually amplify the signal.
 

maylar

Electrical Weenie
10+ year member
Jan 15, 2002
3,498
9
Connecticut
Head units with sub out usually have volume and lowpass settings separate from the main audio. I'm running my subs from the rear preouts and don't have those controls available.
 

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