Wiring Subs Down From 4ohm to 2ohm??

[sweefu]

Hi all, i have seen on videos and read about people wiring their 4ohm subs down to 2ohm so they can run them off a 2ohm amplifier. Can anyone tell me anything about this or how to do it?
Thanks!

[holdenboy]

OK, to wire up subs to get an impedance of 2 ohm you need 2x 4 ohm voice coils. This can either be 2 single 4 ohm voice coil subwoofers or a dual 4 ohm voice coil subwoofer. You basically join the two positives together and the two negatives together, then out to you amp.

[sweefu]

ah thankyou very much holden boy. so if i buy 2x jaycar response 10inch subs, each are dual 4 ohm voice coils, 250wrms each sub, i could wire them into my 500wrms at 2ohm cadence monoblock?

[holdenboy]

Ahh, no.

To get a 2 ohm impedance, you either need 2 4 ohm voice coils (so 1x 4 ohm dual voice coil subwoofer, or 2x 4 ohm single voice coil subwoofers) or 2x 2 ohm dual voice coil subwoofers.

In your situation, you would have a total of 4x 4 ohm voice coils (2 subs, each has dual voice coils). So you wire them in parallel and that would get you 1 ohm. In series would get you 4 ohm. They are your options using two 4 ohm dual voice coil subs.

[sweefu]

ah i see, thankyou very much. looksl like i'll go hunting for some different 10inch subs!
Thanks again mate.

[holdenboy]

Yep if you need a 2 ohm impedance for your amp, the most basic way to go is a single 4 ohm DVC sub. You can also go with two 4 ohm (SVC) subs.

[sweefu]

thanks holdenboy, i think i foudn some 250wrms 2ohm kenwood single voice coils, might go with those. do you have any pointers for a dual 10inch enclosure?

[holdenboy]

Kenwood 2 ohm SVC subs? Link?

As far as an enclosure goes, it would depend on what you wanted from the subs and how much room youre willing to spare.

I'd imagine is nice, tight bass and a flat frequency response? Then about 1.0 cu.ft. each sealed is ideal, so 2.0 cu.ft. internal volume, 16-18mm MDF thickness. Box rear / sidewards firing.

[sweefu]

sorry, dual voice coil, i made a mistake but
Kenwood 10inch Dual Voice Coil Subwoofers 2x - eBay, Speakers, Audio, Electronics. (end time 18-Jun-09 15:45:39 AEST)
this fellow selling them said he could do a box for $50 also

[holdenboy]

Well yes you can "load" two of those subs down to 2 ohm. (each sub wired in series then wired in parallel together = 2 ohm).

What type / size of box?

[Dan_VX_Spac]

How would you wire it if you had 1 dual voice coil sub to 1ohm?

[SweetWagon]

How would you wire it if you had 1 dual voice coil sub to 1ohm?

It would have to be a 2ohm dual voice coil sub, then its simply wiring it in parallel - join all the positives together, and join all the negatives together.

[Dan_VX_Spac]

Oh crap i meant i got a 4ohm dual voice coil how would i wore it to 2 ohm

[SweetWagon]

Oh crap i meant i got a 4ohm dual voice coil how would i wore it to 2 ohm

same as above