biwire trick

Al,

The majority of tweeters are above 6 to 8 Ohms in the 10 KHz to 20 Khz range - rising with frequency due to the inductance. So the applet formula in the link is a pretty good approximation for the 10 KHz to 20 KHz range.

I think we can all agree that below 10 KHz we can pretty much ignore the effects of cable inductance.

In the applet I used 5 meters of speaker cable with + and - leads separated by 1 meter in order to get a 0.25 dB drop at 20 KHz compared to 200 Hz. I deliberately used an "extreme example" to show that the effect is very small in all situations.

However, the effect does exist and you are absolutely right that it might be audible in some situations. I stand corrected.

I would argue that this "trick" is definitely the wrong way to bi-wire speakers - at the very least it goes against normal way to make electrical connections which is in general to use either two wires side by side in close proximity for low frequencies (audio) or a coaxial cable for ultra HF applications.

Yes, the MD description I used/quoted is not the same as what I'm describing (single cable + jumper arrangement), but it led me to think of what I've described here. I stand by my first statement -- I hear more air, more dimensionality, larger staging, more natural and full sound. Unless there is a downside electrically, which I haven't read yet (Almarg...assuming you would have brought it up?) I'm hearing positive differences and don't have a good reason to revert back to the conventional hook up method.

Unless there is a downside electrically, which I haven't read yet ....

I think that the only conceivable downside would be a philosophical one, along the lines of Shadorne's last comment. It could be argued that you are raising the effective cable inductance to compensate for an imperfection elsewhere in the system or the room. But given that nothing is perfect, and that the adjustment is extremely small in electrical terms, as a practical matter I don't see any issues. I would think of it simply as fine tuning the system.

Best regards,
-- Al

You learn something new every day, thanks Al!