Low voltage with heavy bass
 

Hey
I have been having trouble with my system basically since I installed it. I can put it to around 19 on my deck usually with normal driving, but if i turn it up more the amp will cut out driving the subs, but the speakers will keep going. After a second the subs will pump a beat and cut out again. I am good with car audio, but not a pro. On my capacitor the voltmeter reads as low as 11.0V. I do not have a large system, only 650W rms.

A friend of mine suggested that it could be fixed by purchasing an optimum yellowtop deep cycle battery, since I have a motomaster eliminator right now and it is coming up on 3 years old, and my alternator is only a few months old.

Does anyone have any imput?

This is my set up
Attachment 21880

and this is my car
Attachment 21881

What are the gains / bass boost on the sub amp set at? Settings on the deck? Double check those and check your grounds as well. Check your speaker wires to make sure everything has a good connection.

Gains are at 1/3rd, bass boost is at the same.

My deck is set to have the defeat off, sub output, bass level and trebel. The grounds for the system are good. I have I haven't done the big 3 though.

had the system pumping completely topped out at it was while driving on the highway with the radio off for a few hours so the battery was nice and full and the revs were high. I just want to get my system ready so I can bring it to the DB comps this summer. I know it has potential, but I can't reach them.

What about a thermal problem? Does the amp shut off when the seat is down? For that matter what model is your amp?

It will do it at any temperature, and rarely gets overly warm. Usually if I'm going to use them for over 20 minutes of driving I will put the seat down, because it isnt muffled.

My Amp is a refference series Infinity 650W 2 Channel.

answer is simple. you have a very bad ground connection somewhere. or maybe a short.

As Yuli said check your grounds. I can't say for sure without a model number, but make sure your amp is 2 ohm stable when bridged.