Assume the following setup: 2 RE Audio 12" XXX DVC 2ohm, wired down to 1 ohm, each to a Hifonics HFi3000D, where the woofer is suspended in free air. Now, assuming a test tone of 32Hz was sent to each driver, where each amp is pushing the full capacity of 3000 watts to each. Each of these amplifiers states it requires a fuse of 250amp. It may very well draw less than that, 3000watts divided 14.4volts equals 208.33amps, but no amp is 100% efficient, so for this theory we will assume the max draw (250amps times 2 amplifiers equals 500amps). So we can assume at any point in time, up to 7,200 watts of power is being "drawn" from it's source at a rate of 14.4V.
Now take a Kinetik HC2400 battery. It states it has 2600 cranking amps, and discharges at 128amps/Hour. 128amps/hour at 14.4V (yes i know it will not discharge at 14.4V, more like 12V without an outside source charging it, but stay with me), that means it can discharge at a rate of 1,843.2 watts/Hour until complete discharge (losing voltage the closer it gets to depletion).
My question is this, assuming the car is off and no outside source of power is recharging these exact model batteries, how many batteries will it take to sustain these two amplifiers fully powering these two drivers for approximately 30 seconds? Now how about 5 minutes?
Ready for the fun part? Now assume the car turns on. The vehicle houses a single 250amp alternator, but at idle (which it will be) is rated (and proven) to produce 100-125amps. Assuming the vehicle itself will require 40amps to run at idle, how many Kinetik HC2400 batteries will be required to sustain this test for approximately 30 seconds? And for 5 minutes?
You may be thinking, what the hell am I trying to prove? Well, I just installed a 250amp alternator made from Rush Power System. He said he could design me a dual alternator setup, however since no one else has ever made the request for my model vehicle, he would charge $750 for a 350amp and $500 for a custom bracket. Already did Big 3 upgraded to 1/0 KnoKonceptz and a Kinetik HC1400 starter battery. No subs in it now, and nothing special, just 4 Alpine Type-X REF speakers powered by a Hifonics 80w 4-channel. Between what I'm saving and tax money next year, I have a budget of $3,200. I want to put 2 12" RE Audio XXX each powered by a HFi3000D. I have personally seen these exact drivers being driven by upwards of 4000watts a piece and not malfunction. So too much power isn't an issue. I'm ripping the back seats out of my sedan, placing the enclosure where the seats used to be in a custom built ported box tuned to 32Hz and housing all the amplifiers, wiring, batteries, etc in the actual trunk. I need to know, realistically how many batteries I will need to compete in a real competition.
This may be overkill, but I've been to competitions, official and "unofficial" and I have a fun, it's something I enjoy, I'm willing to spend the money, and I have the full support of my local professional car audio shop (they already sponsor someone so wont sponsor me lol). They have already made their recommendations, but I want to hear from a community of people who actually use this equipment and know what to expect.
Now take a Kinetik HC2400 battery. It states it has 2600 cranking amps, and discharges at 128amps/Hour. 128amps/hour at 14.4V (yes i know it will not discharge at 14.4V, more like 12V without an outside source charging it, but stay with me), that means it can discharge at a rate of 1,843.2 watts/Hour until complete discharge (losing voltage the closer it gets to depletion).
My question is this, assuming the car is off and no outside source of power is recharging these exact model batteries, how many batteries will it take to sustain these two amplifiers fully powering these two drivers for approximately 30 seconds? Now how about 5 minutes?
Ready for the fun part? Now assume the car turns on. The vehicle houses a single 250amp alternator, but at idle (which it will be) is rated (and proven) to produce 100-125amps. Assuming the vehicle itself will require 40amps to run at idle, how many Kinetik HC2400 batteries will be required to sustain this test for approximately 30 seconds? And for 5 minutes?
You may be thinking, what the hell am I trying to prove? Well, I just installed a 250amp alternator made from Rush Power System. He said he could design me a dual alternator setup, however since no one else has ever made the request for my model vehicle, he would charge $750 for a 350amp and $500 for a custom bracket. Already did Big 3 upgraded to 1/0 KnoKonceptz and a Kinetik HC1400 starter battery. No subs in it now, and nothing special, just 4 Alpine Type-X REF speakers powered by a Hifonics 80w 4-channel. Between what I'm saving and tax money next year, I have a budget of $3,200. I want to put 2 12" RE Audio XXX each powered by a HFi3000D. I have personally seen these exact drivers being driven by upwards of 4000watts a piece and not malfunction. So too much power isn't an issue. I'm ripping the back seats out of my sedan, placing the enclosure where the seats used to be in a custom built ported box tuned to 32Hz and housing all the amplifiers, wiring, batteries, etc in the actual trunk. I need to know, realistically how many batteries I will need to compete in a real competition.
This may be overkill, but I've been to competitions, official and "unofficial" and I have a fun, it's something I enjoy, I'm willing to spend the money, and I have the full support of my local professional car audio shop (they already sponsor someone so wont sponsor me lol). They have already made their recommendations, but I want to hear from a community of people who actually use this equipment and know what to expect.
