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bi-amp center speaker help

post #1 of 5
10/8/09 at 8:16pm
Thread Starter 
I need help in setting up my center poke audio (lsic) bi-amp to my Onkio tx-605 receiver.  The problem is on the back of the 605 receiver it has hook-ups for left and right front speakers that can be hooked up bi-amp.  I do not have bi-amp left and right speakers. I have a center poke audio LSIC bi-amp speaker.  On the back of the 605 receiver it has a center speaker hook-up but it says nothing about bi-amp. Can I hook up my bi-amp speaker to my receiver?
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post #2 of 5
10/9/09 at 4:45am
Hi Tracy,

No, you cannot bi-amp the center with this receiver.  Secondly, there is no advantage to passive bi-amping in this manner. 

Is there an issue with your center speaker that is prompting you to want to bi-amp?
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post #3 of 5
10/9/09 at 5:46am
I've never done it at all, but from everything I've read, there's really no advantage to bi-amping any of your speakers. They say you won't notice enough difference, to make it worthwhile to spend the time and extra speaker wire to do it.

I also have the LSiC center speaker, and it works very well. I hope you have other LSi speakers as your fronts? Did you setup your Onkyo for 4 ohm, instead of 8 ohm? 4 ohm speakers put a much heavier load on receivers. If not, you need to. LSi speakers are 4 ohm speakers. The manual for my Onkyo 805, say that if ANY speaker is 4 ohm, set the receiver up for 4 ohm. You do it in the receiver's setup menus. I guess your 605 can be set that way? Maybe that will help with whatever reason you want to bi-amp for.
Good luck!
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post #4 of 5
10/10/09 at 11:14pm
Bi-Amping is a complete waste.  Polk makes some decent speakers, but I wish they would stop designing them for bi-amping.

Explanation using rough numbers.  On a speaker like you have, 90% (and to be honest, probably more) of the power goes to the mid/woofers and 10% to the tweeter.  So, if you bi-amp, what you are really doing is just splitting the signal to 10% and 90%.  The result is, you are only taking off 10% of the load by splitting, which entirely insignificant.  Both bi-amping and bi-wiring are a complete waste.  Use one, better amp if you want an improvement, and use one run of heavier wire.
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post #5 of 5
10/10/09 at 11:15pm
I'll also mention that people who bi-amp tend to swear by it.  Clearly it is a placebo effect.
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