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Psu for car sub

Last response: in Components
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July 18, 2009 4:39:08 AM

just to let any one know, i have successfully hooked up a 400w (rms) sub to my old 450w psu through a amp. goes pretty hard, just to let any one know whos doing the same...

More about : psu car

July 18, 2009 5:14:16 AM

Umm... the output wattage is not directly linked to the power drawl...
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July 18, 2009 5:17:14 AM

i know that was just stating values..
its a 2000w amp 800w max sub
have 2 subs but only one hooked up
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July 18, 2009 6:47:36 AM

The max rating on most speakers and cheap amps seem to be a number pulled from the sky. DC RMS to PEAK is 1.414 and PEAK to RMS is ~.71. Most of these numbers don't quite work with theory.
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July 18, 2009 12:19:06 PM

True. How often have you seen a cheap set of computer speakers advertised at 200 watts peak music power (whatever that is) and it's powered by a 12 volt 1 amp wall wart?

"DC RMS to PEAK is ... " is I hope a typo. Should be "DC RMS".
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July 19, 2009 1:38:14 AM

Good use of an old PSU.
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July 20, 2009 1:35:53 AM

jsc said:
True. How often have you seen a cheap set of computer speakers advertised at 200 watts peak music power (whatever that is) and it's powered by a 12 volt 1 amp wall wart?

"DC RMS to PEAK is ... " is I hope a typo. Should be "DC RMS".


I meant in DC or Direct current circuits. To find the RMS voltage to peak voltage those numbers are used. In AC or Alternating Current it is a little different.
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