Subject: From: Dan Ellis <dpwe(at)ICSI.BERKELEY.EDU> Date: Wed, 25 Sep 1996 14:06:14 PDTDear List - Jamie Mazer <mazer(at)ladyday.mit.edu> sent me this message for posting to the list concerning the problems in channel separation between headphones. DAn. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From: Jamie Mazer <mazer(at)ladyday.mit.edu> Subject: Re: sony MDR V6 headphones About the cross talk problems due to common grounds: According to RealTime: > bummer. Not really -- if you're careful, you can separate the two earphones from a pair of MDR's and just attach (solder) a new mini-phono jack to the earphone that's left connector-less after the surgery. The MDR's use a sort of very fine coax-like 3 conductor wire. You can split the two earphones where the L and R lines separate and put on the new jacks there. This works well -- the earphone-pairs are usually pretty well matched, so you don't really want to mix and match across earphones if you can help it (according to Sony). Just be careful when soldering -- don't overheat anything and use a flame or sharp scalpel blade to strip the insulation off the cables (it's a paint-like insulation). Or at least this all applied to the last pair of MDR earphones I used for dichotic experiments bought a couple years ago. One last caveat -- be careful if you're using a sound blaster or similar hardware to play out signals. Many of the SB cards have common grounds too and this will ruin all that work! /jamie -- email: mazer(at)ladyday.mit.edu mail: MIT, E25-634 phone: 617-253-5751(office)/-5792(lab) 45 Carleton St fax: 617-253-8943 Cambridge, MA 02139 - - - - - - - - - - - - - - - - - - - - - - - - - - -