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On Bi-Wiring
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DeLub
Active Member
Agreed. Bi-wiring has the same effect as increasing the cable diameter in single wiring. As said above, if you start with a decent cable to begin with, the effect is minimal.
Haflermichi
Active Member
The difference is the picture on the left will cause you to think your speakers have some kind of magical upgrade "built-in" just waiting for you to unlock. The picture on the right will cause you to spend twice as much money on speaker cable in order to "really take advantage" of the magical upgrade.
According to this article, bi-wiring can reduce intermodulation distortion and the difference is measurable.
https://www.qacoustics.co.uk/blog/2016/06/08/bi-wiring-speakers-exploration-benefits/
Whether the difference is audible is a separate question.
This is not an "article". This is marketing BS from a company.
Guess what : Q Acoustics and QED are part of the same group...
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Bi wiring is topologically identical to "normal" wiring. There is no functional difference other than practical considerations like running a four conductor cable and bi wiring it to take advantage of lower gauge equivalent wiring.
It is published by a speaker company and obviously they want a result that works to their advantage. However, I'm genuinely interested in what makes it BS. What is the flaw in their experiment, how they made the measurement, or their conclusions?
Crass ignorance of the laws of physics
tvrgeek
Major Contributor
Bi-wire was a stunt to sell wire. Go get some 16 gauge zip cord and forget everything you have read in a review. It is actually about perfect.
Bi-amp can have advantages either by use of active crossovers, or in PA work, amplifiers sized specifically for the drivers in question. You may want different amps on the 21 inch SUB array than on the horns.
Bi-amp can have advantages either by use of active crossovers, or in PA work, amplifiers sized specifically for the drivers in question. You may want different amps on the 21 inch SUB array than on the horns.
The explanation they give has nothing to do with how electricity actually works. That makes it BS.
Measurement error and/or misinterpretation/misrepresentation of results. They're not providing enough (well, any) detail of the test setup, so it's hard to tell.
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Good marketing is not telling lies, not to be mistaken for the truth
In case of single wire, the whole audio spectrum run through this wire.
The moment you go bi-wired, the signal running over the two cables will differ.
The tweeter has a high pass filter, hence none of the current intended for the woofer will enter this cable because the filter effectively blocks it.
Likewise the woofer has a low pass filter, hence the higher frequencies won’t enter this cable.
Now the big trick, compare any measurement e.g. IMD as in the article using the single wire and the tweeter wire or the woofer wire and there will be a difference.
Small wonder as the signals differs!
A real proof would be to measure the signal after the filter.
Go single wired to the speaker, measure the IMD at the connectors of the tweeter
Go bi-wired to the speaker, measure the IMD at the connectors of the tweeter.
Likewise the woofer.
If this show a difference, they do have a point.
They probably have some very good reasons not to perform this test
BTW: as single and bi-wires are different topologies, it is thinkable that there is a difference.
However, as all the relevant properties of speaker cable (resistance, capacity, inductance) are very low, this is not very likely this will be audible.
http://www.audiomisc.co.uk/Electronics/audio/biwire/Page1.html
The voltage waveform on both legs of biwire will be the same as on a single pair..
Full spectrum.
Are they truly different? Everything happening in the bi-wires is isomorphic to what is happening at the terminals of a single wire connection. I see them as exactly the same, minus negligible differences in resistance due to branch sizes.
https://upload.wikimedia.org/wikipedia/commons/2/26/Mug_and_Torus_morph.gif
Warning! The following is opinion because I am not going to write an article about biwiring even though I have been a BIAMPING fanatic since 1969.
Biwiring=A load of marketing bullshit that I have wished would go away since the very first time I heard about it. It preys on audiophiles who don't have any technical background.
Biwiring=A load of marketing bullshit that I have wished would go away since the very first time I heard about it. It preys on audiophiles who don't have any technical background.
The currents will differ, though.
Vini darko
Major Contributor
My speakers are bi-amp'd. Don't see any point in bi-wire.
Yes.
As a function of the load, which is frequency selective at the speaker terminals.
disclosure: the MartinLogans are bi-wired with AWG2 THHN because I can and the cost was $0
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I had to replace the binding posts on my MartinLogan's because they had all started to spin freely. I replaced them with SpeakOn connectors, which now mate to my AHB2, and thus did away with bi-wire capability. Frequency selectivity happens at the cross-over, not at the speaker or amplifier binding posts. Once leaving the cross-over or driver, depending on design, the frequency/load modulated signals reunit at the speaker's (-) binding post or at the amplifier's in a bi-wire configuration. So I see no benefit, what-so-ever, in bi-wiring. Bi-amping however, can have credence. I sold my old bi-wire Audioquest speaker cables for what I paid for them, and had Canare 4s11 and Neutrik come to the rescue
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