Originally Posted by manethon
What exactly are you doing with this truck that would require that many amps ?
320 Amp should be more than enough if you have proper reserve capacity...... for example the xs power 3100D batteries. They are Awesome! We use them for car audio all the time.
What is your voltage doing ? how low does it drop ? This will tell us if you need more or not.
also, if your drawing more than 320 A plus batteries are draining 1/0 wire is most definitely not big enough. When i was competing and limited to 2 batteries i gained from 155 to 155.6 by doubling my wire runs. 155 to 155.6 is increase is MASSIVE
I'm currently pulling 180 amps with one amplifier, and 30 amps with the driver amplifier, the transceiver is pulling 14 amps. Truck runs great, I have a bit of voltage drop across the lines about 1v which doesn't seem like much but that little bit kills alot of the PEP and even RMS output wattage numbers which is kind of annoying. I am upgrading my system and will need to have another 300 amps on hand. I'm wanting to avoid going to a "motor maul" as I'd rather have another alt than a crap ton of batteries.
The issue with my application versus Car Audio, is when I pull a draw on the system, there is no quick spikes, sudden bass thumps that pull down on the system briefly for only a moments time....when I key a microphone it's full on hardcore above anything any audio competiton would experience....my draw is CONSTANT draw. Caps and stiffeners don't help with what I'm doing. It's not uncommon to have 30 seconds to a minute or so of a constant 200 amp draw on my system. It's pretty wild.
There are guys who are running 5 Leeve Neville 320amp alts on their Suburbans keying 50,000 watts. I'm not ever gonna do that, but I want to beable to key a constant draw and peak watt output around 3000+ watts at 14 or 16 volts(if I can get an externally regulated isolated second alt). Ohms law being 14.5vx210ampsx.50%efficiency = 1,522.5 wattage output which is roughly where I'm at right now. When I'm done I'm planning on keying above 3000 watts so Ohms law would be looking like: 16voltsx320ampsx.50%Efficiency = 2,560wattage output.
Not interested in getting the voltage much higher than 16 as the transistors will likely overheat and produce more output but not on the frequency of which I'm wanting it trasmitted on.
I just figured some of the offroad boys with the onboard welders and what not would be running dual alts for sure, but i just can't find any information. The chevy guys have it easy. Direct bolt on systems and bam 640 available amps on hand.