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View Full Version : Advice on Bridging a JL e6450?


stewey
02-04-2006, 12:07 PM
I am looking for advice on how best to wire up the JL e6450 I just ordered. The configuration I have is a bit unusual. I have four speakers: 2 components up front and two midbass drivers for the rear-shelf.

The front components will be high-passed around ~100hz. The midbass drivers will be low-passed around ~100hz. They are all 4ohms.

Initially, I had envisioned bridging all six channels of the 6450 to give 3 channels each with 150 watts into 4ohms. I was then going to use one channel for each of the fronts and wire the rears in parallel and use the remaining channel for them. However, further research suggests that this could be unstable because the rears in parallel would result in a 2 ohm load (not recommended when bridging according to the manual).

Can anyone speak to this configuration? Would it be unstable? How seriously should I take the manufacturer's statement that it is not recommended?

Assuming the above configuration is a 'no-go', I came up with an alternative: 45w into each front speaker (one channel each, unbridged), and 150w into each of the rears (two channels each, bridged). How does this sound? Any other ideas?

I don't have a great deal of experience bridging and wiring speakers in various configurations so I was hoping someone here could offer advice.

Thanks!
Stew

TC323i
02-04-2006, 05:34 PM
Assuming the above configuration is a 'no-go', I came up with an alternative: 45w into each front speaker (one channel each, unbridged), and 150w into each of the rears (two channels each, bridged). How does this sound? Any other ideas?


Thanks!
Stew


I would not do it the first way you are suggesting. I would go with thte second one only put more power to the front. 150w into each front, 45w into the rears because the rears just act as a soundstage for the front. you dont really here as much in the back.

stewey
02-04-2006, 07:12 PM
Thanks!

I posted on another forum and they suggested using only four of the six channels leaving all channels unbridged. They said that bridging increases power, but reduces sound quality.

Any comments on that?

TC323i
02-04-2006, 07:15 PM
yes i disagree. why would they make it so you could bridge an amp then. they are made to be bridged as long as you follow the recomendations.

stewey
02-05-2006, 04:46 PM
I have done some more research and it seems that bridging does indeed degrade SQ. Apparently this is fine for subs. Since my priority is SQ over SPL, I'm going to drive them with one channel each.