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RE: Star-quad geometry is intended for single channel use.

Posted by Duster (M) on April 7, 2014 at 14:38:35

In Reply to: RE: Star-quad geometry is intended for single channel use. posted by megalomaniac on April 7, 2014 at 10:50:27:

This matter can be confusing, since there are two different types of terminations involved in the stereo headphone cable:

1. At the source end, the 4-conductors are terminated with a single 3-pole TRS phone or 3.5mm stereo mini plug.

2. At the load end, the 4-conductors are individually terminated as a stereo pair of conductors, one twisted pair for each channel.

Regarding the Mogami 2534 when implemented as a DIY headphone cable, with two opposing blue conductors, and two opposing clear conductors within the cable bundle (see above image):

At the source end (TRS connector): The 4-conductor cable is connected in a similar manner as a cross connected star-quad cable, in that the two opposing clear conductors are terminated to the common ground sleeve for both channels negative (-), while one opposing blue conductor is terminated to the tip for the left channel positive (+), and the other opposing blue conductor is terminated to the ring for the right channel positive (+).

As such: At the load end (headphones): The four conductors are separated into two twisted pairs: One twisted pair of clear & blue for the left channel, and one twisted pair of clear & blue for the right channel.

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