icdbko32

im a little confused with how i should wire my subs to my amp.

my subs are infinity reference 1252w:
-300 rms
-2ohm dvc.. i think each coil is 2 ohms

amp: hifonics brutus bxi1208D
-1200 rms @ 1 ohm
-900 rms @ 2 ohms
-450 rms @ 4 ohms
-Mono sub amp
the amp is mono however it has 2 speaker outputs for running dual subs on it
to help simplify wiring.

the only thing im confused about, how do i wire it? im alright running 900 rms into the two subs because there only temporary subs for now anyways.

icdbko32

how i beleive you wire it now is the positive and negative lead on each sub connected to the positive n negative terminals and on each sub put a wire connecting the positive on one coil to the negative on the other coil.

is that correct? and that wiring would give me 2 ohms overall correct?

The Grinch

If the voice coils are 2ohms each, then running them in series will give you 4ohms per speaker. So it's 450 and not 900.

The Grinch

This should help a bit.

http://akamaipix.crutchfield.com/ca/...2-ohm_mono.jpg

Basically you will end up with two 4ohm speakers. You run those in parallel to the amp to get a final draw of 2ohms from the amp. Total is 900watts, 450watts per sub.

icdbko32

thats what i had thought but i alos thought it might be 4 ohms overall because the coils are run in series.

thanks for the help

The Grinch

Well, one speaker has 2 coils. Each coil is 2ohms. When you grab one speaker and series the coils, you end up with a total of 4ohms (2x2). So now you have two speakers which are 4ohms a piece. If you ran those two together in series (4x2), you'd end up with 8ohms. Running them in parallel (4/2) gives you 2 ohms.

In my car I have a one dual voice coil sub, where each coil is 2ohms. I have the two coils running in series to give me 4ohms. My amp is officially only 4ohm stable, so it's perfect. If I wanted to add second sub, I would be stuck with either 2 or 8 ohms, or running my speakers in stereo at 4ohms each. Yuck.

If you want to get complex, check this out:

Series Parallel Speaker Impedance