hi i am new here to this forum and i just had a few questions i had wanted to ask . ok i currently have a 88 deville i am running a alpine 7893 cd player and i have a mtx ta 81001 amplifier running on a powerbass 15xs subwoofer . my questions is do you all think i need to upgrade my alternator and battery i have been looking online to find specs on the alternator and stuff i asked the guy at autozone and he said it was 120 amps is that good enough for the amplifier the battery is a regular one from advance auto. the reason i am asking the lights don't dim really bad till i get to about 26 or so on the cd player. with the bass on zero and no bass boost on the amplifier. i do plan on getting a optima yellow top in the future and a iraggi alternator i just need to know will that be ok and what size alternator to get that will help me get the most power out of that amplifier it's rated at 1900rms at one ohm. all help will be appreciated

There are a couple of cheaper options that you could do before upgrading your alternator.

The Big 3 shouldn't cost more than $50 in parts. It will provide better conductivity from alternator to battery to chassis.

A second thing you could do is get a larger battery for under your hood. Something like a Kinetic, or a PowerMaster would do wonders for you.

Lastly is to add a battery in the back, next to your amp. If all this doesn't help at all, it's time to get a High Output alternator.

I thought that amp wasnt 1 ohm stable! and rated 1kW@2 ohms?

thanks thats what i was going to try first was a newer battery up front first then go from there . and the birthsheet says it's 806 watts at 4 ohms 1513 at 2 ohms and 1953 at 1 ohm all at 14.4v