Cutting Out- Please Help

My system is cutting out with deep bass at 3/4's. Dont have it that loud very often but it should be able to run at that level. I have an Alpine IVA-901 HU. I put in a 250 amp alternator to a Stinger Sp 1000 battery, 1 gauge the Orion MBR 70, then 1 gauge to the 2nd SP 1000 and then to the dist block. I have 2 amps a Diamond Audio 1200.1 that runs 2 Focal 13's and then a Diamond Audio D7104 that I am only using 2 of the channels to run my front Dynaudio 360 3 ways. I will be using the 3rd and 4th channel to run a set of 5.25 for the rears. Do I need a cap? I thought that with all my power I would be good. When I run a volt meter none of the batteries ever drop below 12 volts even with deep bass. ANy thoughts?

Its possible the amps may be overheating.. just a thought.. check that with a 250 amp alternator and the volt meter not dropping below 12 volts I wouldnt think you would have any power issues...

Forget about the Cap, if you read enough post here you'll learn their uselessagain Im leaning towards a heat issue..

Good luck with it

-Skold

2004 Honda Civic Ex 4Dr

Kenwood DDX-7015/W Nav

4 Fosgate T152C

Hifonics Brutus BX1500D

RE XXX 12 in a 4 Cube Snail Shell

Does everything cut out?  Or just the subs?2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.

It all cuts faintly out like its not getting enough power. I checked if they were getting and they were barely luke warm. Any other thouights?

Re do your grounds, im assumeing they are both connected at the same point?  Sounds like the ground can't keep up with the current your requireing.2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.