Question about hooking up 2 Caps or 2 batterys?
Im getting 2*15 Kicker L7 solobarics and a really big amp probably around 2400-3000 watts, but also including 2* 6 1/2 infinity, 2* 6x9 infinity, 2* inifinty tweeters that will be hooked up to a 500 watt infinity amp, head unit is a jensen 7in lcd touchscreen cd/dvd/mp3/wma player that is around 160 watt i believe. I was wondering how to hook up 2 caps to 1 battery and both amps, one will be probably 3-4 farad, other just 1 or .5. can you hook up 2 caps to one battery and still charge/hold volts good, or do i have to go with 2 batterys, if i dont have to go with 2 batterys can you describe how to hook up 2 caps to one battery, ive already looked at isolators for 2 batterys so i know how to do that but i dont really want to.
Thanks for any comments/help.
Batteries or caps won't help you.
Something to consider...this is an example...
To calculate the current draw of an amplifier, multiply the number of channels by the RMS watts per channel (a 2 channel amp rated at 500 watts RMS per channel would be 1000 watts). Double it to account for amplifier inefficiency (1000 watts X 2 = 2000 watts), then divide by the average output voltage of an alternator, 13.8 volts (2000 divided by 13.8 = 145 amps). Since the average music signal requires about 1/3rd of the average power in a test tone, divide by 3 (145 amps divided by 3 = 48 amps).
This is an average approximation of current draw and it can go higher. So I would gather between *48 and 72 amperes for this example.
The alternator of a:
compact car is about 35 amps
mid-sized car is about 65-75 amps
SUV is about 145 amps
Calculate 40% of the amperes of the alternator you have now. This is the average current the car uses when running. Add this number to the approximate average current draw (*48) of the amps you calculate, and you will come up with the mimimum average current required to power the audio system and vehicle.
If the number you come up with is the same as what your alternator supplies, you need to take no action.
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