power vs resistance

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04-07-2004, 09:06 AM

vampiregirl

0 Watt CAFz'r

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Join Date: Apr 2004

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what is the difference or is there a difference between these two when wireing a 800w dual 4 ohm coil sub...

2 ohms parallel with an amp rated for 400w @ 4ohms

or

8 ohms series with an amp rated for 800w @ 4ohms

04-07-2004, 09:53 AM

Shaughn Murley

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well, the 8 ohm load on the 800 watt @ 4 ohm amp will produce 400 watts.

the 2 ohm load on the 400 watt @ 4 ohm amp might not work at all.

04-07-2004, 01:26 PM

vampiregirl

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try that again

04-07-2004, 03:22 PM

Shaughn Murley

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nope

800watt at 4ohm= 400 watt at 8ohm

400watt at 4ohm MIGHT work at 2 ohm but you may not gain any power AND your amp most likely will cut out if it's not designed to run at a 2 ohm mono load.

04-07-2004, 06:32 PM

Tha-Game

500 Watt CAFz'r

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Posts: 924

yea u dont wanna run a 2 ohm load on a 4 ohm stable amp unless u have lotsa fuses, and the need for a new paperweight when the fuse doesnt save the amp....

04-08-2004, 08:52 AM

vampiregirl

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ok i asked the question wrong then...

right now i am running a sub with 2 voice coils both at 4 ohms. the amp is mono and the coils are wire in parallel therefore resistance is 2 ohms power is 800w from the amp.

now what is the difference if you use a 2 channel amp at 400W per channel and 4 ohms
or even a one channel amp at 1600w at 8 ohms when wired in when the two coils are wired series

does any of this make any difference?

04-08-2004, 09:52 AM

Shaughn Murley

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well, if you know of an amps that does 1600 watts at 8 ohms sign me up

400 watts/ch at 4 ohms 1 coil per channel is the same as 8 ohm mono for 800 watts on the same amp.