NewBuyer;348549 Wrote: > When a DAC utilizes a pulse-transformer on the coax input (like the > Benchmark DAC1 PRE for instance), how much isolation does this actually > provide in practice - does it block *all* possible intercomponent > undesirables from riding the coax interconnect, or just some/most? Is > it still possible for any problem coupling nasties whatsoever, to > realistically bridge from say a computer through coax into the DAC - > even when the input interface includes a pulse transformer? > > I.e. strictly regarding galvanic isolation, can toslink ever provide a > genuine advantage to a properly implemented pulse-transformer isolated > coax input?
What you can be sure of is: 1. perfect galvanic isolation. No DC will pass and thus no ground loops. This assumes that the input-connector is isolated from ground too. 2. if done right, and we must assume they did it right, the transformer will present a perfect 75 Ohm termination of the S/PDIF input. This eliminates undesirable echo's due to bad termination. But, the transformer will basically pass (it might change it somewhat, but it will pass) any non-DC input which includes everything sent from the transmitting side plus any echo's that originated between that transmitting side and the transformer (cable, connectors, internal connections etc.) So, it's best to see it as providing the two points listed above and nothing else. cheers, Nick. -- DeVerm ------------------------------------------------------------------------ DeVerm's Profile: http://forums.slimdevices.com/member.php?userid=18104 View this thread: http://forums.slimdevices.com/showthread.php?t=52817 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
