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9050Michael

Enthusiast
Anyone out there know much about bi wiring? I am thinking of trying this on my Polk mains, but does it really make much of a difference? Thanks. Mike.
 
ParadigmDawg

ParadigmDawg

Audioholic Overlord
It wont do anything except give you mores wires going to your speakers.

Anyone out there know much about bi wiring? I am thinking of trying this on my Polk mains, but does it really make much of a difference? Thanks. Mike.
 
9

9050Michael

Enthusiast
I am constantly hearing about the added depth and bass response by bi wiring. Just a little curious if that's all bunk or not.
 
ParadigmDawg

ParadigmDawg

Audioholic Overlord
Just do a search on "bi-wire" on this site and read until you are sick of it.

I am constantly hearing about the added depth and bass response by bi wiring. Just a little curious if that's all bunk or not.
 
j_garcia

j_garcia

Audioholic Jedi
There are bi-amping and bi-wiring, two different things. Bi-amping can give you more headroom and allow you to achieve possibly more depth and clarity because you are using separate amps for each portion of the speaker, but so will adding an amp with the same amount of total power IMO. Bi-wiring is nothing more than running two sets of wires from one amp channel, which is the same as just running a larger wire. Seth=L calls it "BUY-wiring" ;)
 
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dsa220

dsa220

Junior Audioholic
As in all things audio related, there are opinions on both sides.

I currently bi-wire a pair of ProAc Studio 100’s with a 2M pair of AudioQuest Green speaker cables. The difference between these and my previous cables (single run of Kimber 8TC) was noticeable, but not overly dramatic. For me the differences were with soundstage solidity (images more tightly focused within soundstage) and a bit more treble extension, clarity. I can not vouch much for bass extension; the ProAc’s are after all small monitor speakers.

I have heard many systems where there was no difference, but other factors came into play with these systems like poor speaker placement and mating electronics (more speaker than amp could handle) not to mention that most systems do not have [IMHO] enough inherit resolution to benefit from bi-wiring.

If you are going to try and bi-wire using a receiver, I would not waste my time; most receivers have barely enough room for one set of decent speaker cables on a binding post, much less two.

If you can find an audio dealer who may have a demo pair already wired up that you can try on a money back guarantee, then try it out. But please beware that other things need to be in place first:

1. Properly set-up speakers.
2. Preferably a good separate power amp with the capability to properly terminate the speaker leads on a binding post with room to tighten down the screw with a small wrench.
3. Do not use banana plugs, use spades. Remember you are adding some extra weight to the speaker terminal; you want them to stay in place! Bananas can slip out and that can cause your amp problems, like creating a short.

I have done other things that improved the sound of my system more than the bi-wiring; it was more of a tweak in which I am trying to wring the last bit of performance out of my system. I will probably bi-wire with some Kimber 8TC next (I love that cable), that is if I can find a spade lug that can handle that much cable!

Remember, just because a speaker can be bi-wired, does not mean that it should be bi-wired.

I would also contact Polk and describe your set-up and see what they recommend.

DSA
 
mtrycrafts

mtrycrafts

Seriously, I have no life.
I am constantly hearing about the added depth and bass response by bi wiring. Just a little curious if that's all bunk or not.
Yes, it is :D
Excuses to justify it, like so many other snake oil claims or products in consumer-land.
 
M

markw

Audioholic Overlord
I often wonder about statements like this.

Remember, just because a speaker can be bi-wired, does not mean that it should be bi-wired.
Then why would they bother with putting buy-wiring posts on them?

It wouldn't because of all the hoopla about buy-wiring they are easier to sell to the gullible who want to believe this theory, would it?

I think that's called "marketing", not unlike stuffing as many cup-holders as possible into mini vans.
 
BMXTRIX

BMXTRIX

Audioholic Warlord
There has never been a speaker that has shown any audible difference under any real world test circumstances to make any difference at all... ever.

This is the bottom line, if you can bi-amp a speaker, then that is worth it. If you are considering bi-amping, then pick up some decent (not expensive, but good) 14 or 12 gauge wiring and run it to all your speaker locations. It will only cost a few bucks more and if you are going through heavy labor, just do it once and spend a few bucks more.

But, bi-amping won't benefit you other than adding the added speaker wire thickness.

It is like adding one additional pixel of resolution to a 1,000,000 pixel image - it just doesn't do enough to be worth it.

If you are prepared to bi-amp your speakers... well, then you can see some serious benefit there.
 
R

russ_l

Audioholic Intern
There has never been a speaker that has shown any audible difference under any real world test circumstances to make any difference at all... ever.

Hhmmm; I guess BMX is pretty old since he obviously has tested every speaker ever made under every possible set of conditions!:)

Seriously; bi-wiring CAN make a difference if done correctly. The effectiveness of bi-wiring has nothing to do with cable size but all to with intermodulation distortion. The strong magnetic field generated by the low frequency current in the cable interacts with delicate magnetic field generated by the high frequency current in the cable. This interaction causes distortion.

Bi-wiring mitigates or eliminates this distortion by separating the low frequency conductor from the high frequency conductor. The key word is separate. It's of no value to run the two cables bundled together (even though this is what 50 percent or more of audiophiles do).

To make bi-wiring effective the two cables need to be separated by a few inches. If you haven't bi-wired with separate cables, you haven't bi-wired.

My two cents!!

Russ (BSEE, MSEE)
 
Seth=L

Seth=L

Audioholic Overlord
Seriously; bi-wiring CAN make a difference if done correctly. The effectiveness of bi-wiring has nothing to do with cable size but all to with intermodulation distortion. The strong magnetic field generated by the low frequency current in the cable interacts with delicate magnetic field generated by the high frequency current in the cable. This interaction causes distortion.

Bi-wiring mitigates or eliminates this distortion by separating the low frequency conductor from the high frequency conductor. The key word is separate. It's of no value to run the two cables bundled together (even though this is what 50 percent or more of audiophiles do).

To make bi-wiring effective the two cables need to be separated by a few inches. If you haven't bi-wired with separate cables, you haven't bi-wired.

My two cents!!

Russ (BSEE, MSEE)
Strong magnetic field eh?

It would seem you are qualified to make this statement, but have you done an DB a/b test? Also, can you really apply this to a real world situation (such as if it does make a difference, is it audible?)
 
Warpdrv

Warpdrv

Audioholic Ninja
But, bi-amping won't benefit you other than adding the added speaker wire thickness.
I know you meant to say bi-wiring here... read your post again..

Bi-amping in my eyes can produce some noticeable difference and will be more expensive using 2 amps for the same speaker...

Bi-Wiring is nothing more then a waste of wire...
 
pzaur

pzaur

Audioholic Samurai
Bi-wiring mitigates or eliminates this distortion by separating the low frequency conductor from the high frequency conductor. The key word is separate. It's of no value to run the two cables bundled together (even though this is what 50 percent or more of audiophiles do).

To make bi-wiring effective the two cables need to be separated by a few inches. If you haven't bi-wired with separate cables, you haven't bi-wired.
I'm confused because each wire is still carrying the entire spectrum of information. Both wires come from the same source with the source putting out the complete spectrum. There is no active separation of the frequencies (active crossover...) in the speaker terminal posts at the receiver.

The only real active separation of information occurs with the subwoofer, at the receiver for which there is an active crossover that is hopefully adjustable in some fashion or through a high-pass filter(terminology help, please) on the sub itself. Otherwise, the subs would be outputting their entire possible range of frequency. Subs don't magically have only the correct information sent to them.

I rarely have seen any bi-wire scheme that isn't wired with both wires connecting to the same post on a receiver. Even when they're split on different terminals (some receivers allow bi-wiring by utilizing the "presence speakers" terminals) each wire is still carrying the same information.
It's like running two pipelines to your house from the same lake and believing that your water is somehow cleaner than your neighbor's water because he only used one pipe. Same make of pipes, by the way.

Even if the receiver were actively splitting the "low frequencies" and "high frequencies" to the speakers where is the line drawn between what is low and high? What about the "mid frequencies"?

My understanding is that for bi-wiring to actually have any benefit the crossover needs to be an active crossover and utilize amplifiers in some fashion for each range of sound.

Interesting little article on crossovers

-pat
 
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