RE: low capacitance interconnects - Tre' - SET Asylum

SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

RE: low capacitance interconnects

Tre'

In Reply to: RE: low capacitance interconnects posted by adaug on February 28, 2014 at 19:40:45:

All coax wire has shunt capacitance.

It seems like 25-30pf per foot is the "normal" range.

The total amount of shunt capacitance plus the Miller capacitance of the input of the amplifier (or whatever the cable is feeding into) vs. the output impedance of whatever the cable is being feed from creates a low pass filter.

The -3db point of that filter needs to be high enough that you don't have a audible loss of high frequencies or an audible phase shift.

The old rule of thumb goes like this, if you want the system to be flat and phase shift free all the way to 20kHz, the -3db point of that filter needs to be 200kHz.

So, depending on the output impedance, "low" in one system might be "high" in another.

Tre'
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Follow Ups Full Thread

Topic - SET wtih passive pre? - adaug 17:43:36 02/12/14 (13)

RE: SET wtih passive pre? - Abacus Music 16:06:59 03/04/14 (0)

RE: SET wtih passive pre? - dvb 21:10:00 02/27/14 (4)

low capacitance interconnects - adaug 21:17:45 02/27/14 (3)

RE: low capacitance interconnects - Tre' 10:56:50 02/28/14 (2)

RE: low capacitance interconnects - adaug 19:40:45 02/28/14 (1)

RE: low capacitance interconnects - Tre' 09:16:24 03/03/14 (0)

not the best solution - Gordon Rankin 13:14:02 02/19/14 (0)

No - Awe-d-o-file 21:55:26 02/18/14 (0)

RE: SET wtih passive pre? - mark.korda@myfairpoint.net 13:19:17 02/17/14 (0)

Sure ... - Paul Joppa 21:23:42 02/12/14 (3)

RE: Sure ...Like Falling Off A Log - amioutaline? 05:43:17 02/13/14 (2)

RE: Sure ...Like Falling Off A Log - adaug 18:08:31 02/13/14 (1)

RE: No, unless..... - amioutaline? 18:22:33 02/13/14 (0)

Follow Ups

RE: low capacitance interconnects - Tre' 09:16:24 03/03/14 (0)

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