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#384474 - 10/21/12 12:24 PM Re: Too good [Re: Ken.C]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1279
Loc: Canada
Originally Posted By: Ken.C
There's really no benefit in using the bi-amping provided by receivers these days. In fact, there's probably no benefit from bi-amping unless you were to remove the crossovers in the speakers and purchase an active external crossover as well as separate amps.


Thats bitter sweet news.
I had read "the more power you give them the better they sound".
I would get to keep either front pressence or rear surrounds...

I would actually keep both but currenty I only can run either the front or rears at one time. I should have bought a model up last year but...


Edited by brwsaw (10/21/12 12:37 PM)
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#384476 - 10/21/12 12:42 PM Re: Too good [Re: brwsaw]
Ken.C Online   content
shareholder in the making

Registered: 05/03/03
Posts: 17924
Loc: NoVA
It wouldn't actually be more power, unfortunately--for one thing, it's all coming from the same power supply, and for another, even with separate amps, the power doesn't sum (tweeters and mids take much less power than woofers, so they'd consequentially be using a smaller percentage at any given volume level.)

The jury is out on "the more power the better" thing. Or, I should say, there is intense disagreement on it. But I don't think you'll get a lot of disagreement that biamping internal to the receiver doesn't give you more power.
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#384477 - 10/21/12 01:05 PM Re: Too good [Re: Ken.C]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1279
Loc: Canada
Before I started looking around at recievers I figured it was all pretty simple.
1) Don't buy cheap if you want good sound
2) Don't underpower your speakers
3) Tweak
4) Upgrade
5) Repeat
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#384495 - 10/21/12 09:36 PM Re: Too good [Re: brwsaw]
pmbuko Offline
shareholder in the making

Registered: 04/02/03
Posts: 16349
Loc: Leesburg, Virginia
You can overdo it 3. You can definitely overdo it on 4. Try to keep the number of times you do 5 to a minimum. smile
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#384496 - 10/21/12 10:22 PM Re: Too good [Re: brwsaw]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10482
BRW, you appear to have picked up some misinformation in your reading elsewhere. Specifically on the two main points you mention here, a receiver can't be used to "bi-amp" a speaker and you can't simply "give" a speaker more power.

Bi-amping by definition requires two amplifiers; a receiver has only one amplifier with several output channels. The output transistors in each channel just act as valves to distribute the required amount of voltage needed in each channel at some instant in time from the receiver's power supply section. The individual channels have no power of their own, it all comes from the limited supply available in the main central power supply. Distributing this to a speaker through two channels rather than one can't increase the power available by any amount.

As to "giving" a speaker more power, that only takes place when it's played louder. At a given loudness level a speaker uses only the amount of power for which it's designed, regardless of the amplifier. At a comfortably loud level speakers of typical sensitivity, such as the Axioms, use about 1 watt. Brief peaks can take much more, of course, but unlikely anything beyond the 100 watts or so typical receivers can easily support. Adding an amplifier with a maximum capacity of 200 or 2000 watts doesn't accomplish anything. Unused headroom is simply that: unused.
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#384498 - 10/21/12 11:16 PM Re: Too good [Re: JohnK]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1279
Loc: Canada
Wishful thinking indeed.
Always good news though.I'll keep reading, maybe I'll understand it a bit better by the time my color samples arrive.


Edited by brwsaw (10/21/12 11:49 PM)
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#384500 - 10/21/12 11:25 PM Re: Too good [Re: brwsaw]
tomtuttle Offline
axiomite

Registered: 06/20/03
Posts: 8410
Loc: Tacoma
All of those amplifiers share the same power supply.
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#384501 - 10/21/12 11:49 PM Re: Too good [Re: tomtuttle]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1279
Loc: Canada
Fair enough.
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