I just bought a 12" Kicker L7 2ohm dvc sub box is already built its sealed in the back of a 95 Ram 1500. I need a little bit of help on an amp that i want to buy it is a JBL GTO 1201.1 787RMS W at 4ohms. I think the altenator in the truck is a 120amp altenator (not sure) will the trucks altenator be amp to handle that amp? more info The amp has 3 40amp fuses so 120 amps is the most the amp will pull i was told will i need a high output altenator?

will be doing the big 3 with 0g and a deep cycle battery.



AMP SPEC'S
JBL GTO1201.1
12dB per octave electronic crossover
~ RCA low-level inputs
~ Full-range preamp outputs
~ Variable bass boost circuit for optimized system response
~ 787 watts RMS x 1 @ 4 ohms
~ 1114 watts RMS x 1 @ 2 ohms 14.4V supply
~ Dynamic Power 1339 watts at 2 ohms
~ Damping Factor: 6.348 at 4 ohms
~ Frequency Response: 10Hz - 302Hz
~ Maximum Input Signal: 6.1V
~ Variable electronic crossover and bass-boost

 

personallyi think youll be fine as long as you dont just sit there with the truck off and jam out for an hour then run your truck for 20 mins and think all is good i currently run a lil over 1000 watts and mines perfectly fine and i dont even know if the alt has ever been replaced

 

I'm running around 780 watts rms total with mine thats with 2 amps and it does fine but it's a lot less than what you are going to be running with that amp so I really don't know.

 

You could also install acapacitorand that should take care of it. I have never used one myself but I've heard they really help with heavy amp loads. Here is a link http://www.onlinecarstereo.com/CarAu...?CategoryID=26

 

Yeah the alternator would be fine with it. Definitely get a a capacitor, it will keep your headlights from dimming and it will make the sub hit harder. I don't know how many farads you need but it is a must.

 

I've been debating on a capacitor myself. The charging system does OK under normal driving, but at stoplights or low speed driving the lights dim as the bass hits. Looks wicked at around 25-30 mph. Just enough to notice. Usually just turn it down a little or cut down the AC/heater fan until moving again.....