Will these amps power these subs fully ?

Question

http://www.woofersetc.com/index.cfm?fuseaction=product.display&Product_ID=2370

will two of those power 2 or maybe 3 Kicker 15 L7 2000 watts dual 4ohm or dual 2ohm?


Please let me know if this amp is good enuff for these sub combos.... please help

Ok i got 1989 cadillac so im lookin for a new alternator now at http://www.autopartswarehouse.com/shop_parts/alternator/cadillac/allante.html
any specific brand names u suggest?

also you have any sites with suggested capacitators?

and one more thing can you guys list for me QUALITY amps that provide quality power for subs? i need alot of power

Answer 1

I'm not sure if that amp is CEA compliant so I wouldn't bank on the specs:

RMS power, 4ohm@.01% THD: 500w x 2
RMS power, 2ohm: 900w x 2
RMS power, 1 ohm: 1500w x 2
1/2 ohm Stable stereo Power: 2000w x 2

However, to nearly fully power two dual 4 ohm subs, the subs would be wired like so http://i81.photobucket.com/albums/j230/sparky3489/SINGLE-PARALLEL.jpg to each channel of one amp.

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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.

I'd recommend finding the next biggest alternator of that that you calculate.

Answer 2

well if that amp actually live up to what it claims, then yes - it would definitely be good enough to power your L7's. There wouldn't be a problem with getting 3 L7's you'd just have to make sure they were wired correctly.

One thing to keep in mind, with that kind of current draw, you're gonna need a pretty big fricken capacitor. That amp might have the power it says, but that doesn't mean that it's efficient. With that amp there, I'd suggest you get at least a 3 farad capacitor.

Answer 3

It all depends on what amp you get. You have only wire those subs at 1ohm or 4ohm final load. Your choices are to get a amp(monoblock perfered) that is close to 1000x1@1ohms or 1000x1@4ohms. That RMS doesn't change only the load.

Answer 4

umm yeah as long as u power dual 2ohm it should be able to beat the subs up but i would suggest Kenwood they can power almost anything