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In Reply to: RE: If you had really done it balanced there would be no hum. posted by bare on May 30, 2017 at 15:37:06:
First, balanced operation has the advantage of reducing the artifact of the cable, regardless of length. If you've ever had to audition a single-ended cable to find one that sounds right, you might then understand what a blessing this can be.
This means if you do it right, no need for a boutique cable. Audio shops don't like that, so there you are.
The second is that all magnetic phono cartridges are balanced sources. Don't believe me? Go ahead and switch the phase on one channel of your setup, and see what happens. If you did this with a true single ended source (like a tuner or single-ended CD player) the result would be a loud buzz. With a cartridge all you did is invert the phase with no other consequence. Balanced sources do not employ a center tap- no need for matched resistors to simulate that as implied elsewhere on this thread. Balanced operation ignores ground, so what you really want is what the cartridge really is- a floating source.
Here's a handy page on balanced operation:
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Follow Ups
- This is patently false for 2 reasons: - Ralph 09:02:47 05/31/17 (13)
- RE: This is patently false for 2 reasons: - Ugly 09:52:06 05/31/17 (10)
- It helps, but mainly the voltage input - Ralph 11:09:04 05/31/17 (9)
- Yes, I see. Though... - Ugly 22:26:44 06/01/17 (8)
- I'm not sure - Ralph 09:36:04 06/02/17 (7)
- RE: I'm not sure - Ugly 10:26:03 06/02/17 (6)
- I don't think you need to do that - Ralph 10:51:51 06/02/17 (5)
- RE: I don't think you need to do that - Ugly 09:30:52 06/03/17 (4)
- Are you building a preamp from scratch then? nt - Ralph 08:52:04 06/05/17 (3)
- RE: Are you building a preamp from scratch then? nt - Ugly 19:21:24 06/05/17 (2)
- Ahhh Day dreaming the ? - bare 16:29:23 06/11/17 (1)
- RE: Ahhh Day dreaming the ? - Ugly 11:33:40 06/13/17 (0)
- The link doesn't work, Ralph (nt) - 1973shovel 09:07:12 05/31/17 (1)
- corrected link nt - Ralph 09:38:11 05/31/17 (0)