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When selecting an amplifier for multiple speakers

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Topic review
   

Expand view Topic review: When selecting an amplifier for multiple speakers

by cargodz » Tue Jul 10, 2007 12:04 pm

If you were to attempt a 3 sub set up 4ohm voice coils, you would want to wire them in series/ parallel... each sub in series presenting an 8 ohm load and then all 3 in parallel presenting a 2.6667 ohm load, so you would want a 2ohm stable amp...
If you're gonna do it ;)

by Bwcad1 » Tue Jul 10, 2007 10:04 am

amp has nothing to do with it. and doesn't manipulate the load the load is presented by the coil.

by CaptainPioneer » Tue Jul 10, 2007 10:00 am

Well I do agree with the fact that 2 is better than 3 but... I dont have the SPL Knowledge to argue with that statement, even though im sure there are amps capable of creating even power distribution.

by whataburger » Tue Jul 10, 2007 9:37 am

Thanks for all of the replies!!!

by Bwcad1 » Tue Jul 10, 2007 9:27 am

its not that its an uneven load its just because all three of the subs have different DCR's so each gets slightly different power which can cause cancellations. and i guess thats just the spl guy in me trying to make everything perfect. but your better off just going with 2 subs or ideally one sub.

by breakjunki » Tue Jul 10, 2007 9:24 am

Bill, can you explain why, I"m curious? I had 3 4 ohm 12's running at 1.3 to my jbl 1201.1 for along time. Is it the uneven load it present to the amp??

by Bwcad1 » Tue Jul 10, 2007 9:13 am

again i say 3 subs on one amp = trouble.

by CaptainPioneer » Tue Jul 10, 2007 9:09 am

Not neccessarily Bill... I know that the Memphis Amps were completely capable of handling 3 subs at that configuration... In fact i know a friend of mine was running 3 Infinity Kappa Perfects 12" on a Memphis 1500w amp... Killer Sound System in that lil shit box he had lol

by Bwcad1 » Tue Jul 10, 2007 9:01 am

3 subs one amp = badnews.

by swimmerdude » Tue Jul 10, 2007 8:54 am

If each sub is rated at 500rms, then to give them their rated rms, you will want something that does 1500rms at that load. However many subs you are running, at up the rated rms on all of them and that is the amount of power you will want to give the subs their rated rms.

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