This 1000 Watt amp, is it too much for a speaker that uses 700 Watts?
Question by Asker: This 1000 Watt amp, is it too much for a speaker that uses 700 Watts?
I don’t know much about car audio.. Anyway, I have a 15″ sub that says it uses 700 Watts. I was looking around and came across a very cheap 1000 Watt amp. However, it says that it’s 2 x 500 Watts MAX output, or 1000 Watts bridged. Would that be OK to use, or should I be looking for 700 Watt amps?
Thanks, but I talked to my friend about it, he said that I should get an equal or less watt amp, because a more powerful amp could blow the speakers
Best answer:
Answer by Drea
No, that will work. It will only put out what it can. Since it’s not possible to put out 1000 wts on a 700 wt speaker, it will put out only (up to) 700. Probably less, around 550-650. The MAX output is what it could put out if it were attached to speakers with 1000 wts avaliable.
Give your answer to this question below!
Save your cash.
Your car has a 12 volt electrical system, 1000 watts from a 12 volt system requires over 80 amps. average, the peaks would be even higher. (Remember Ohms Law)
That will need cables of VERY low resistance They would be so thick they could be used to moor a small boat.
If they are more than a few feet long the losses will make your system impossible
Settle for 50 Watts per channel.
Yours ears have a logarithmic response and won’t notice the difference.
If you insist in going ahead then you will need a second alternator to supply the necessary current, plus custom made drive belt and associated electronics. This assumes you have enough space to mount it.
Basically it’s not worth the effort.
Ian M
October 19th, 2012 at 2:09 amYes, the RMS value of a sub shouldn’t be exceeded by more than 15%.
If your total system power is 1000 watts RMS or more, you will need to:
1. Upgrade the alternator to a high output alternator
2. Upgrade to a heavy duty deep cycle battery
3. Upgrade the “Big 3” – that is to replace the power wire between the battery and alternator, the ground from the battery to the chassis and the ground strap from the engine/tranny to the chassis with at least 1/0 AWG wire.
Failure to do this will result in you replacing them anyway as the alternator will eventually fail.
Here is a guide that will calculate what size alternator and power wires you need http://www.datafilehost.com/download.php?file=6d26c621
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October 19th, 2012 at 2:53 am