Sub out or rear out

[Tobytoby]

What is the difference between sub out and rear out?

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[hispls 5,000+ posts]

"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 10+ year member]

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.