Audio Systems: Kenwood Amp Power Fluctuation, kenwood amp, amp fuse

Question
First thanks for the response, I like the diode idea, about how much positive reverse voltage diode should I use?  Do you have a type of diode in mind?  Also, how do you keep a keep a battery in the trunk charged-------------------------
Followup To
Question -
I have an aftermarket 1000 watt Kenwood amp with sub woofers.  The system has a .5uf capicator with voltage readout.  The system normally runs at 14.6 VDC but will fluctuate when at higher volume and cause a clicking sound which drops the voltage to about 13.1 VDC.  Can I add another .5uf capacitor to help stabalize this more or what other steps might I take?  The car has a heavy duty  160 amp alternator.  Thanks!
Answer -
Jimmy,
On some high powered sound systems it wouldn't hurt to install a battery in the trunk as close to the amp as possible. The power amp will draw most of its operating current from this battery, you may need to also install a heavy duty diode isolater in the battery cable to the front battery.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net  

Answer
Jimmy,
I have installed batteries in trunks to give a boost to the 1000 watt plus amps being used. If you run a heavy wire (#4 ga. or larger) from the front battery + terminal to the rear battery + terminal, you will need to cut the wire close to the rear battery and install the large isolation diode in line with the battery cable. The cathode of the diode must be pointed to the rear battery. Also be sure to install a large fuse in the battery wire at the front battery. 50-100 amp fuse should be OK. a 100 amp diode with a prv of 50 volts should do the trick.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net