current draw

[RaTtLz 3]

I just have a general question about current draw. I am seriously concidering jumping on the 2000d presale and was wondering if it puts out 300 amps max current draw at 1 ohm, what will the nominal and max draw be at 2 ohms. Is there a mathmatical formula I can plug numbers in? I plan on running 2 2000d's at 2 ohms each since i have 2 dual 4 12's. Thanks guys, I still love this forum.

[johnecon2001 82]

Amperage draw depends on voltage supply available and ohm load. Both are reactive so no real way to calculate them.

[Duran 387]

You need a 200 amp fuse for it, that tells you it will draw a maximum of 200 amps. (Most of the time)

[shizzzon 461]

no, if it did it most of the time, the fuse would pop.

Here is a general rule of thumb-

Take an amplifier's fuse rating, divide it in half and that's the average pull you should expect. In this case, it's 100A. However, since you are running at 2 ohm isntead of 1 ohm, expect an average fo 50-75A per amp.

Of course, the amp will pull more than 100A during hard constant lines but the average rule of thumb is there.

You should not use this as a guide only to purchase alt\batts though, it's just a reference.

[Duran 387]

no, if it did it most of the time, the fuse would pop.

Here is a general rule of thumb-

Take an amplifier's fuse rating, divide it in half and that's the average pull you should expect. In this case, it's 100A. However, since you are running at 2 ohm isntead of 1 ohm, expect an average fo 50-75A per amp.

Of course, the amp will pull more than 100A during hard constant lines but the average rule of thumb is there.

You should not use this as a guide only to purchase alt\batts though, it's just a reference.

Shizzon I wasn't saying that the amp will draw 200 amps most of the time, I was saying the general rule applies most of the time. Who knows he could me using them for competition burps? That would be the only exception to the rule.

[shizzzon 461]

oh, ok

[Duran 387]

oh, ok

Sorry for the misunderstanding

[RaTtLz 3]

Thanks guys, your answers were really helpful. Am I then correct in assuming that if the 2000d does 2000w RMS at 1 ohm at 200 amps max. (so says the pre-sale section), I can expect the 1000w RMS at 2 ohms (again the pre-sale section) at 100 amps on average? Doing the simple equation, Volts x amps = watts, 14*75=1050. The method to my madness here is that I'm trying to find a true 1000w rms mono amp that can run at 2 ohm for a couple of reasons. the first is that the amp would run cooler making it more efficient by not wasting current due to heat loss. the second would be its easier on my electrical. pulling 1000 watts on 75-100 amps and 12-14 volts is pretty decent in my book. Feel free to criticize and point me in the right direction. I am sure the 2000d is just what im looking for. If there are other suggestions on amps please voice those as well.

Edited May 1, 2009 by RaTtLz

[dbjunior 0]

running one at 1ohm would be less efficeint but not by a noticeable amount. at 2ohm it would be say 87% efficent and 1ohm maybe like 85% so for thats only a couple amps diffrent not noticeable on a good electrical although if you drop the amp below rated to say .5ohm it may drop to 65% efficient as long as you can support 2000w either should be fine as long as your talking same amp so id get 1 amp and run it at 1ohm use the extra money for something else like big 3