Bi-wiring with different cables for HF and LF?

I use the same type of speaker wire as Ozzy.
I bought mine from Joe Levy at Tempo Electric, unterminated.
I also use the same in ICs from Pre to Amps.

Ozzy,

"I don't agree that stranded copper provides better bass than solid wire."

I meant that as just a general statement based on my own experience. You are correct, though. I'm sure some solid core designs may perform better. I prefer SC myself.

Mtrot, when I initially brought up the coherence issue, I should have offered an explanation as well, sorry I did not. Since this has come up again, and you are asking questions pertaining to frequency, then hopefully this will help you to understand.

Stereophile definition - “coherent 1) Pertaining to a multi-way loudspeaker's sound: seamless from top to bottom; showing no audible evidence of a crossover or of different driver colorations in different frequency ranges. 2) Pertaining to the soundstage: Phantom imaging that reproduces within the stereo stage the original lateral positions of the performers.”

I’ll use 60Hz as the fundamental frequency for the explanation which is definitely in the range for a kick drum or bass (guitar or upright). Along with the 60Hz, something called overtones or harmonics are also created. 2nd order is 120Hz, 3rd order is 180Hz, 4th order is 240Hz, 5th order is 300Hz, and so on. How high do they go? I don’t know, but in my research, I found several saying up to 5kHz, and even higher for that bass note. These overtones or harmonics give the instrument its timbre or characteristic sound. Look at the graph in the link below (at the paragraph titled “Spectra and harmonics”). It is for a 400Hz note from a flute, but gives you a visual for what I’m saying. Notice that the 3rd order harmonic at 1200Hz is just slightly lower in amplitude than the 400Hz. Not all graphs will be the same, since the amplitude of individual frequencies and how fast they taper off will be determined by a particular instrument.

http://www.phys.unsw.edu.au/jw/sound.spectrum.html

Now we play this 60Hz note on your system. As the frequency of overtones increase, they reach a point, determined by the crossover in the speaker, in which they will NOT be produced by the driver producing the fundamental frequency, but the next driver, or drivers depending on how high they actually go.

Every cable or wire will have electrical properties, capacitance, inductance, and resistance. These properties will vary with all the different manufacturing techniques and materials. It’s this variation that contributes to a slight altering of signal transfer between components, or as in your case, amp to speaker, resulting in a difference of the sound. It’s true you might stumble upon two that would be real close, but for the properties to be identical, the cables must be identical.

So when you use identical cables, the signal feeding the driver or drivers producing the overtones is identical to the signal feeding the driver for the fundamental frequency, resulting in accurate timbre. Using different cables will alter the overtones that are NOT feed to the driver producing the fundamental frequency, therefore degrading the timbre accuracy of the sound. As I said before, I think it may be possible to stumble into two cables that would be real close and work OK together, but that would seem to be a huge undertaking with a multi driver 4-way speaker. A 2-way might not be as difficult.

LFD Hybrid Speaker Cable 3 meter From Dr. Bews the maker of the fine LFD amplifiers comes this novel and superior speaker wire.

extracted fom the Gene Rubin website:

" ... This cable uses PC-OCC multi strand and LC-OFC ribbon that is relatively expensive and labor cost is high (it’s a pain to make), but it’s the only way the makers have found to make a really good sounding single wired speaker cable.

LFD have been trying to manufacture this super single wired speaker cable from copper for nearly 10 years. The LC-OFC ribbon gives the very good bass and the PC-OCC multi strand gives a nice mid-band/top, either cable made as a single wired speaker cable have issues at the top end or the bass. It might be a mad idea, but it works!..."


"This wire will make your LFD amp sing! Works well with every amp I have tried it with!"--Gene Rubin

Manufacturer: LFD

Bear in mind that my amp has two sets of output binding posts, so it is easy to run two separate cables as a "bi-wire" connection. I kind of like the Morrow cables on the top end, just trying to experiment with the LF cable and see if I can improve the bass at all.