I have a Kenwood 100W head unit controlling two 5" round and two 6X9" Pioneer speakers. I have my RCA cables run to a Jensen 300 W amp which controls a 10" Kicker sub. Whenever I accelerate too fast or brake too fast it cuts out and doesn't come back for a couple minutes. My head unit will sometimes loose power completely, but it comes right back. I have checked all my connections, I have a good connection on my ground. The speakers themselves are not affected in any way, only the amp and sub. What could cause this? Would it be inconsistent voltage from the battery? I do have a new alternator because the old one had inconsistent voltage.