Needle Audio

Do I need a new alt. or just a deep cycle battery for my car audio system?

I drive a 1996 Olds. Bravada. The battery is in the final months of his 5 years of life (from the date on the battery). I recently installed a JL 13w7 and JL 1000 / 1 amp. This configuration makes my voltage meter in my Dash jump around like a madman. I can not turn down the volume of the submarine and the radio volume too high or that needle voltage will flow down near the red and cause the radio off. The entry level amps is only about 1 / 4 of the climb. I the volume component of the company where I can play and not be cut. The needle voltage drops even if kinda low when deep bass hits. There are still books, but obviously not as hard as he could. For this system, do you think I could just add an upgrade Optima Battery and the large 3 or would I probably need a bigger alt? If I had money, I just want to upgrade everything. Please let me know what you think. Im not an electrical engineering and thank you in advance for answers.

If your total power is 1000 watts RMS or more, you'll need: 1. Upgrade the alternator to a high performance alternator 2. Choose a heavy deep cycle 3. Upgrade the "Big 3" - which is to replace the power wire between the battery and alternator, the ground from the battery to chassis and the ground strap from the engine / tranny to the chassis with at least 1 / 0 AWG. Otherwise it will result in you replacing them anyway as the alternator eventually fail. Here is a guide that will calculate the size of the alternator and son power you need http://www.datafilehost.com/download.php?file=6d26c621 You'll need Microsft Excel to use it.

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