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Gold Member Username: Southern_bassParis, Tennessee U.S. Post Number: 1852 Registered: Dec-05 | what amp alt would i need if i want to run somewhere between 1200 - 1500 watts |
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Silver Member Username: PelonaPost Number: 808 Registered: Dec-05 | what class is the amp? |
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Bronze Member Username: ShepyjayOnt Canada Post Number: 15 Registered: Feb-06 | wtts or rms? big difference... |
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Silver Member Username: Greeney1888Maple Grove, MN United States Post Number: 172 Registered: Feb-06 | read these if you have time: http://www.wickedcases.com/caraudio/capacitors.html http://www.wickedcases.com/caraudio/charging.html http://www.betteraudio.com/geolemon/newmain/battcapalt/ http://www.bcae1.com/charging.htm http://www.bcae1.com/chargin2.htm http://www.wickedcases.com/caraudio/batteries.html http://www.the12volt.com/info/recwirsz.asp http://www.optimabatteries.com/ |
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Silver Member Username: Killer44Ontario Canada Post Number: 398 Registered: Dec-04 | what about running a 600rms class d and a 2channel amp rated at 60x2rms @ 40hms (not sure the class....) thanks |
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Silver Member Username: Killer44Ontario Canada Post Number: 399 Registered: Dec-04 | thanx those links answer my question perfectly Greeney.... |
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Silver Member Username: LewassBloomfield Hills, MI USA Post Number: 130 Registered: Jan-06 | Casey, Class D and T amps are about 80% efficient, class A,B,AB and whatever else are about 60% efficient. The rule of thumb is 70 Amps for every 1000 watts. If you want to make sure your lights don't dim at all, get a optima yellow top, and the big 3 wires upgraded, and now for some math. So lets say you have a class D subwoofer amp. It needs to draw 20% more power than it is putting out. So for 1500 watts, on a class D amp, add 20% to 1500 which is 1800. Your actual current draw for 1500 watts class D, is 1800 watts. So you need an alternator that has 70 amps for every thousand. So now we take 1800 watts and figure 70 amps for 1000 of those watts, and another 800 watts is 80% of 70 amps, which equals 56 amps. So we need 126 amps in addition to the stock alternator size. So lets say you have a stock 100 amp alternator, you would need a 226 amp alternator to have bullet proof, non dimming electrical power. Keep in mind, lets say if 300 of that 1500 watts, is to power your components, then you have to do the math saying that 300 watts actually pulls 40% more power than it puts out, (60% efficient) so that 300 watts is really 420 watts... Anyways, anyone with a basic understanding of math should be able to follow these calculations. And 1 more thing, if 226 Amp alt seems just a little high for 1500 watts, keep in mind I am talking about a bullet proof system, not one that just "gits r done". |
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Silver Member Username: LewassBloomfield Hills, MI USA Post Number: 140 Registered: Jan-06 | Bump |
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Gold Member Username: Southern_bassParis, Tennessee U.S. Post Number: 1862 Registered: Dec-05 | wow thanks..that was very nice lol |