seanadams;136534 Wrote: > Although the op amps could easily drive, say 100R, by using a 1K output > Z you ensure that the signal from the side you want is not distorted > because the other side is "working too hard" to drive a short at the > end of the cable.
Well, suppose someone put one of these adapters at the RCA input of a preamp. Also suppose that the Transporter was cranked up to maximum gain. I don't know what it puts out in that condition. I'll guess 5 Volts peak. Into 100 Ohms, that's 50 mA peak. There's not a whole lot of op-amps that can put out that kind of current. Seems like you'd need something along the lines of a Buf634 to do that. I wouldn't be worried so much about the distortion of the unused side of the differential output so much as the thermal issues from putting out such high current. That's a strong argument for using 1k. OTOH, if you put a big disclaimer stating in no uncertain terms that such adapters should never be used, better performance driving long cables would probably be possible. My system has 30 ft interconnects (single-ended) to monoblocks on the floor behind my speakers. If I were to attempt that with a balanced connection straight from transporter to power amp, I'd be happier with 100 Ohms than 1k. -- andy_c ------------------------------------------------------------------------ andy_c's Profile: http://forums.slimdevices.com/member.php?userid=3128 View this thread: http://forums.slimdevices.com/showthread.php?t=27445 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
