I just installed a bluetooth adapter for my Alpine CDA-9886M head unit. As I was messing with the head unit settings to get the adapter to work, I discovered a bunch of other settings I've never really adjusted. My unit has a subwoofer setting, which can be set from 0 to 15. It was on zero, which I guess is the factory setting. When I started to turn it up, my subs started to come alive. I've never really felt like they were as strong as they should be, and maybe this is the reason why. From some research I've done, I now believe that the subwoofer setting (which is different from the bass setting) controls volts to the amp, and should be set at 15 to provide full voltage to the sub channels. So, I think I'm supposed to set it to 15, then readjust the gains on my sub amps, presumably turning them down a bit. Does this sound right? I just wanted to run it by everyone before I start messing around with my gains. And, I'm printing out my head unit's user's manual to go through all the other settings. Unfortunately, it doesn't seem to address this issue.
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