BigDaddy13440

I've got a question for all of you in-the-know...... Running a couple of old-school Celestion AD15H's in my Tahoe, 'glassed in the rear corners after cutting out the inner rocker panels. Approximately 2.4cu ft each, with a 3"x8 1/2" port. I know these are rated at 600w RMS, but I'm pushing them with a Lightning Audio S4.500.1 at 2 ohms - supposedly putting out 250 watts to each sub, but sounds like it's making way more power than that - I'd guess closer to 400 watts to each sub, if not more. I'm using 4ga wiring from the battery to the amp rack under the Powerbass S-10's firing down betwen the front seats (nice midbass staging! LOL!). Have an old Kenwood KAC744 (40wx4@4ohm) pushing the components, and a Kenwood KAC714 (140x1@2ohm) pushing the 10's - with the LA amp, it's only 900 watts RMS (supposedly), and I've got a 1 Farad cap. My problem is that my voltage is constantly fluctuating, even w/o having the subwoofer amp on. Hell, I can have the stereo off, and my voltage ranges from approximately 12 volts to 14 volts. Sometimes I can watch the voltage drop when turning on the heater fan and the wipers, other times it's completely unaffected. Sometimes, I can crank the volume up to 30 with the two Kenwood amps, and the voltage may flicker a little, and when I hit the button for the LA amp, it may or may not drop (depending on the tunes I'm playing) What do you think? Do I simply need a larger cap? Do I need to upgrade my alternator (stock 105 amp now in the '96 Tahoe)? The battery is less than 4 months old, and it's a 825CCA with the largest reserve I could get. Any help would be appreciated! Chuck

Been out of the game for a long time, finally got around to putting something in my Tahoe after 1 1/2 years of having a stock CD player. Looking forward to learning what's new from everyone here at SSA!