One sub louder than the other?

[kdrose23]

Hey guys. I just installed my new system and I have a slight problem. My right sub is slightly louder than my left. When I look at the subs playing I can clearly see a difference in the vibrations. I have the two subs connected to a 4 channel amp bridged to run just the subs. I already checked the gain on each channel and they are the same. all connections are correct, I checked them many times. I cant seem to figure out why one sub hits harder than the other. I also only have one set of RCA connections on my head unit, so I have one RCA cable connected to the head unit and on the end connected to the amp, I have it split with two Y splitters (so there are 4 total male ends to plug into the 2 sets of RCAs on the amp) Perhaps these RCAs are the problem? since there is only one set on the head unit which one i front and rear? Any help would be appreciated

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[juanmgarza26 10+ year member]

different subs?

 

[kdrose23]

No both the same subs. Brand new kenwood KFC-w12ps 12s

 

[Beatin' 10+ year member]

check your sub wiring to make sure they have good solid connections.

I had a similar issue one time with a speaker wire barely hanging on the sub box terminal. It caused that sub to have less power/excursion that was very visible.

you said all connections are correct, what about inside the sub box?

 

[kdrose23]

Ok so I checked all my wiring and it's all good. But one thing I did notice. When I flipped flopped the subs (put the one from channels 1&2 onto channels 3&4 and vice versa) the opposite sub became the weaker one. So it's not the subs. Channels 1&2 seem to be slightly weaker than 3&4???? Any thoughts on this?

 

[erod 10+ year member]

Do u have the gain correct on both side some four channel have seperate gain for each side

 

[tallyburban77]

It's very important to set your gains with a dmm when bridging a 4 channel amp to run subs

 

[michaellane 5,000+ posts]

lol why do ppl use 4ch's for subs mannnn...your gainrs are incorrect or you have your wire wrong. check the sub wiring to the box and vice versa

 

[globalminds_ent 10+ year member]

2 of my channels flatly stopped working on my old 4 channel you should really get a mono amp