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4" speakers
It will power two 400 watt lamps.
well, your lookin at RMS when it comes to speakers and amps, if you bought a 800 watt amp, you would be looking at 400 RMS just as you do with your speakers, i would recommend a 1600 watt amp, just for the fact that you always want a little play room with your amp, this way you wont blow the amp, (amps are more expensive than speakers), and if you decide that you want to get bigger speakers, you will not have to replace the amp. But all in all, i would say anywhere from 1200 to 1600 would do just fine for your sub..-Shocker
1000W Kenwood KAC-7204 2/1
No, that's just the maximum capacity of the speakers. You can always run them at less than their maximum rating.
800 watt should be fine
Sure i have 2 400 watt rockfords connected to a 400watt kenwood mono amp. This statement made by another is true.You can hook up 20 subs to a mono amp; BUT you have to configure the speakers by impedance/ohms. if you hook two 2 ohm speakers to a 4 ohm steady amp in parallel you will soon buy a new amp. if you hook 10 speakers in series you will not even get it warm. Each speaker will also divide the available wattage and will not have a lot of power. Take it to a good shop if you don't know the formula for this. you may save your amp. BMyers Lake city, FL
nope most likely a ground check your ground and wires worst case check ground on body of amp with a screwdriver
1 Joule is 1 Watt-Second. 1 Watt Hour is 3600 Watt-Second or 3600 Joules. 400 Watt-Hours is 1440000 Joules.
Four 100 watt light bulbs or anything else that sums to 400 watts.
Try this link ... a clear explanation with worked examples.www.majorpower.com/inverters/battery_sizing_faq.pdf
430 watt bulbs are made to juice a little more light from a standard 400 watt ballast. you get about 3-5000 more lumens. A typical 400 watt HPS produces about 50-55,000 lumens. The 430 will put out about 58,000. Not a lot, but a little extra without any increase in power usage.