Uneven speaker cable lengths and cable termination


Hi,

I'm getting new speakers that are single-wire only. This means I can't use my old MIT Terminator 2 cables, and need something new. My budget is limited as I've just spent all of it on the speakers :)

I'm not sure what the stance on cables is here on audiogon, so I hope I'm not starting a war :)
Anyway, I have some questions:

- Are equal lengths for both channels required? Is it possible to hear a difference? (my amp will be positioned to the left of the left side speaker, so I will need about a 4m run to the rightmost speaker. I was thinking of getting 4m and 2m runs)

- If I buy bare cable, is unsoldered termination helpful? The monster quicklock spades and bananas look really nice, but I wonder if they are worth the cost. (http://www.monstercable.com/productdisplay.asp?pin=4584)

My speakers are Audio Physic Scorpio II with Krell KAV-400xi btw. General recommendations are welcome.
ahochan

Showing 5 responses by kijanki

Cable has inductance (0.5uH/ft) even straight one. It is equivalent to 0.375 Ohm of inductive impedance at 20kHz and 6ft. Keep cables always even to preserve imaging. Avoid coiling.

Making cables uneven is a little bit like buying house next to power lines. Very hard to sell later.

As for unterminated wires (bare) - it is the best followed by spades and bananas. Take into consideration that many amps don't accept bananas. My cable is way to complex to use it bare - I crimped spades then soldered them with 4% silver solder (cable originally had bananas).

Why can't you use your old MIT cables?
Audiofeil - I don't know what conditions they had at the show to get perfect imaging and how better it could be with even cables. 70ft of the difference is 4.4 Ohm of inductive impedance at 20kHz.

"Not a single listener, including other tradespersons and reviewers, could discern a difference."

How do you know that? Did they run questioner of every single person. Maybe people did not say anything to be polite to host or assumed that imaging was good enough for location/conditions.
Sound_real_audio

Now you made me suspicious of this show - why would they need 75 feet of the speaker cable? Only one explanation jumps at me: It wasn't audio show - IT WAS ELECTRIC LAWNMOWER SHOW.
Well - If we assume that 70' of cable doesn't make any difference than cable itself doesn't make any difference and Home Depot lamp cord as good as Stealth Indra and thousands of dollars saved. Do you really believe that - if you do then why are you posting on the CABLE forum?

Super fine things that differentiate hi-end from mass market hifi-ish products are happening at the level of about -80dB (1 part in 10000) and in case of imaging perhaps even finer. At this point we don't event understand physics behind perfect sound like we don't understand why silver cable sound different (on average) than copper one.

With 75' cable capacitance has probably very little effect because of low source/load impedance but inductance in series does. 4.4 ohm of additional (inductive)impedance at 20kHz (1 Ohm at 4kHz) in series with the tweeter will cause big change. We can discuss if 7.5' vs 6' make audible difference but not 75'.

Sombody posted once that XLR cables can be run at any distance without signal degradation - how about a mile?
People get serious.
"Tradespersons and reviewers heard no difference."

Audiofeil - are you ABSOLUTELY sure that it wasn't lawnmower show?

How about different amp brands for left and right channel? (8 out of 9 dentists wouldn't hear the difference).