In Reply to: You "don't see" posted by Craiger56 on July 16, 2015 at 05:56:22:
Up until your last post, you have been trying to argue with me while reiterating the same points I originally made in different words, which has been bizarre.You wrote "his explanation doesn't work" and the oversimplification "the high pass filter portion of the crossover is blocking low frequency currents from flowing through the tweeter"
Yes, that is correct, and if you look at your own previous posts they are saying the exact same thing.Where the reality is the high pass filter is also preventing the high pass cable (bi-wire) fron CONDUCTING high frequencies.
NO! That makes no sense.You wrote "the only frequency range where the low and high frequency networks interact is in the crossover range where low and high filter responses overlap" which is not true.
Yes, it absolutely is true. This is basic electronic theory at work. And your own previous posts are consistent with this.I think it's really lousy to say stupid things about a successful industry professional when you could go to his website and discuss (learn) the finer points with him directly.
Just because he's an industry professional doesn't mean he's right. Or in this case, just because he's a world class speaker designer doesn't prove his knowledge of electromagnetics is correct.
His FAQ says this:
"Additional experiments with a Hall Effect probe revealed that high-current bass frequencies created a measurable field around the wires that expanded and collapsed with the signal. We believe that this dynamic field modulates the smaller signals, especially the very low level treble frequencies. With the high-current signal (Bass) separated from the low-current signal (Treble) this small signal modulation was eliminated as long as the cables were separated by at least an inch or two. (To keep the treble cable out of the field surrounding the bass cable.)"
As I stated before, the above hypothesis is not a valid explanation. Faraday's Law establishes that a time varying magnetic field produces an electric field that induces EMF in a circuit. As such, bass currents flowing in the LF speaker cables will generate a magnetic field that induces EMF at bass frequencies in the HF speaker cables. However, this is an entirely moot point because the HF speaker cables are already being driven with a full range signal containing the same bass frequencies by the amp. The high pass filter in the crossover rejects the induced EMF at bass frequencies just as it rejects the amp's EMF at bass frequencies.
There is another problem with his explanation which I didn't even bother to pick on the first time because the point above is sufficient to reject his explanation. The other problem is that he claims there is signal modulation, which is a non-linear process. Audio cables are linear devices and can't produce modulation.
Finally, as I said before, there are a few other explanations for why biwiring would make a difference, starting with the most basic one: the cable impedance is different.
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Follow Ups
- You're not making sense - Dave_K 07:04:10 07/16/15 (24)
- Without knowledge it won't make sense - Craiger56 10:22:04 07/16/15 (23)
- RE: Without knowledge it won't make sense - JaroTheWise 21:54:59 07/21/15 (6)
- RE: Without knowledge it won't make sense - Craiger56 09:47:45 07/22/15 (1)
- Yeah, we agree on something :) (nt) - Dave_K 06:36:32 07/24/15 (0)
- RE: Without knowledge it won't make sense - Dave_K 05:13:55 07/22/15 (3)
- RE: Without knowledge it won't make sense - JaroTheWise 14:36:01 07/22/15 (2)
- RV never said the Hall effect was responsible - Dave_K 06:54:40 07/24/15 (1)
- RE: RV never said the Hall effect was responsible - JaroTheWise 14:20:44 07/24/15 (0)
- RE: Without knowledge it won't make sense - Dave_K 11:22:38 07/16/15 (15)
- RE: Without knowledge it won't make sense - Craiger56 17:00:08 07/16/15 (3)
- RE: Without knowledge it won't make sense - Dave_K 17:13:06 07/16/15 (2)
- RE: Without knowledge it won't make sense - Craiger56 21:45:14 07/16/15 (1)
- RE: Without knowledge it won't make sense - Presto 09:54:01 07/17/15 (0)
- RE: Without knowledge it won't make sense - Presto 12:52:06 07/16/15 (10)
- RE: Without knowledge it won't make sense - Presto 22:30:53 07/16/15 (0)
- Oh boy, more - Dave_K 18:24:11 07/16/15 (1)
- RE: Oh boy, more - Presto 22:25:46 07/16/15 (0)
- I mean voltage, more precisely EMF - Dave_K 16:48:39 07/16/15 (6)
- RE: I mean voltage, more precisely EMF - Presto 22:29:50 07/16/15 (5)
- RE: I mean voltage, more precisely EMF - Dave_K 03:45:08 07/20/15 (4)
- RE: I mean voltage, more precisely EMF - Presto 10:03:45 07/20/15 (3)
- RE: I mean voltage, more precisely EMF - Dave_K 17:24:07 07/21/15 (2)
- RE: I mean voltage, more precisely EMF - Presto 08:59:22 07/22/15 (1)
- RE: I mean voltage, more precisely EMF - Dave_K 06:57:16 07/24/15 (0)