Psu for car sub

[im_just_jokin]

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...

 

[The_Blood_Raven]

Umm... the output wattage is not directly linked to the power drawl...

 

[im_just_jokin]

i know that was just stating values..
its a 2000w amp 800w max sub
have 2 subs but only one hooked up

 

[one-shot]

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.

 

[jsc]

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".

 

[im_just_jokin]

yea those cheapo speakers are sometimes stated in pmpo which is i think the max power out put, they like to advertise in this cause people who dont know what they are shopping for think wow this number is high as(fools) ill post a pics of my set up for u guys aye...

http://tinypic.com/view.php?pic=2ep7r0i&s=3
http://tinypic.com/view.php?pic=351a0bk&s=3
http://tinypic.com/view.php?pic=14xexja&s=3
http://tinypic.com/view.php?pic=2vju5vs&s=3

 

[nukemaster]

Good use of an old PSU.

 

[one-shot]

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.