question on ohms

audiobass10 · Post by **audiobass10** » Sat Oct 09, 2004 8:05 am

Can anyone tell me if you have 1 ohm subs and you wire them to an amplifier in parrallel..does that make a .5 ohm load????

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William from NOLA · Post by **William from NOLA** » Sat Oct 09, 2004 8:10 am

Yes, if you have two subs with single coils.

Dustin from Huntsville · Sat Oct 09, 2004 9:56 am

Single coil 1 ohm subs? Um... give us some more details about your setup so we can be sure what you are trying to ask. But Like William said, if you have two 1 ohm subs and you wire them to the amp in a parallel configuration, then yes the amp is getting a .5 ohm load.

audiobass10 · Post by **audiobass10** » Sat Oct 09, 2004 11:36 am

They are dual voice coil subs. I apologize. So if i wire 2 1 ohm dual voice coil subs in parrallel, what load does that result in??? Thanks for replying

William from NOLA · Post by **William from NOLA** » Sat Oct 09, 2004 11:56 am

each sub would be .5, then wired in parallel again to the amplifier would be .25
If you were to wire them all in series, you'd get 4 ohms.
If you wire each sub individually in series, then in parallel to the amplifier, you will get 1 ohm.

audiobass10 · Post by **audiobass10** » Sat Oct 09, 2004 12:06 pm

Ok, well here's my situtation. I want to run these 2 12" soundstream tarantulas off of this MA audio mono amplifier http://www.boostcaraudio.com/ProductDet ... de=HK401SX. The subs are 900 wrms each and the only way i can get 1800 wrms out of the MA audio amp is by wiring it to .5 ohms. Is there any way to do that?? Also i appreciate all of your help

William from NOLA · Post by **William from NOLA** » Sat Oct 09, 2004 5:04 pm

1200 is enough for them. Speakers don't NEED their recommended RMS. RMS is thermal. So wire them for 1 ohm.

Post by **GlassWolf** » Sat Oct 09, 2004 6:21 pm

Your subs should perform at their peak in the proper enclosure with as little as about 500wRMS each.
The power handling is as noted above, only a thermal power handling rating depicting how much power the voice coils can handle in heat (measured in watts) before incurring damage.
This doesn't mean they need as much power to reach peak excursion.

Some subs may need their peak rated power to perform properly, but this is rare, and generally denotes one of two things:
1: a very efficient speaker with a very low power handling, or
2: a very inefficient speaker that wastes a lot of energy (see audiobahn)

audiobass10 · Post by **audiobass10** » Sat Oct 09, 2004 8:06 pm

Thanks to everyone for the help. I think i'll go for the MA audio amp and wire it at 1 ohm. Any suggestions on what type of enclosure would be best suited for these subs?

Post by **GlassWolf** » Sun Oct 10, 2004 5:36 am

do you know the EBP for the drivers?
what type of vehicle?
what kinds of music do you prefer?
what is your goal? SPL? SQ?

that';; help us tell ya the ideal box.