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Originally Posted by null_pointer_us /img/forum/go_quote.gif
I keep getting confused while reading this thread, as to what is actually being advocated. Pardon my general ignorance, but what is the technique les_garten and fsma are interested in using, again? i.e. Is there a simple set of instructions or a diagram in case someone (like me ) wants to make such a stereo headphone cable? I'm new to DIY audio.
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Hi,
It's really simple and is a mainstay of audio wiring.
1) You start with two channels, R and L
2) These Channels have a ground reference associated with them, the negative lead.
3) Don't twist R and L with each other
4) Twist R with it's ground
5) Twist L with it's ground
6) Try to keep them separated from each other, AND/OR shielded from each other(Pairs)
7) Don't twist the R with the L, then untwist and twist with one Ground, then untwist, and twist with L again, then untwist, and twist with the other ground, etc, etc.
The snag here is the intermixing and the interleaving of the Signal channels.
Show me speaker cables that blend L and R like this?
Show me Premaps that don't try to keep the inputs separated from each other and twisted around their ground references.
Show me a premap that twists the signals around each other, just one, and I'm not talking about the one your idiot brother made! Production models.
I'm preparing to build a B22, this is part of the wiring scheme to keep the channels away from each other and twisted around their ground reference. Each channel is twisted around it's own ground reference.
R and L are not married together and twisted around each other except in the headphone cable world. Everywhere else it is FORBIDDEN.
Why in the headphone cable world? Because of convenience. The very nature of the cables that are small enough to do this are basically MONO cables that are being re-purposed by "us".
But think about it. The big companies making cheap Phones with Cheap cables put Dual cables on them. Why? Because they have engineers on staff telling them not to interleave the signals. Sheesh!
The whole idea of Hi End audio gear is Dual Mono. Keep your Channels away from each other. The Best Cable would be Dual Balanced config with separate home runs to each driver with good cable and Balanced Dual Mono gear. I'm planning my build now.
Lots of people Use a Star quad, but it's a mono cable, that's how it was designed. I called the companies. I'm just saying it should be a Dual Star Quad. For some reason that's revolutionary.
I have a whole team of Engineers backing me up. They're at Canare and Mogami.
I'm not an EE, but I woke up this morning with a modicum of common sense in my head and money still in my wallet from not buying that $1400 Headphone cable at SAA!
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