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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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I'm having difficulty using Burr Brown BUF634 buffers on each phase of the balanced output of two Audio Consulting silver-wire transformers that comprise the analog output stage of my highly modified Sony SCD-1 player. The buffers improve dynamics, but at the cost of some mild midrange grain/distortion.The SCD-1 XLRs are connected through 1.5 meters of Audioquest Diamond silver interconnect to a BAT tube preamp with an input impedance of 100K per phase minimum.
I tried powering the buffers on the player's internal +/- 7V, 9V, and 16V sources. I tried them on batteries, using AA alkalines configured as +/-3V, 4.5V, and 6V, running in series straight to the buffers, and also with some Elna Audio caps across the battery terminals in values such as 470uF, 1000uf, and 10,000uf. I tried grounding each signal phase on the output from the buffers with a 1K resistor. It sounds less hashy on batteries, maybe even a little better yet with the 470uF caps, but I just can't make 'em sing. Any thoughts?
Dave
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Topic - BUF634 problem with midrange grit - Dave Garretson 12:56:07 06/19/05 (26)
- Re: BUF634 problem with midrange grit - sam9 20:32:49 06/20/05 (1)
- Re: BUF634 problem with midrange grit - Dave Garretson 03:56:13 06/22/05 (0)
- Re: BUF634 partial resolution - Dave Garretson 19:16:50 06/20/05 (1)
- Re: BUF634 more results - Dave Garretson 14:34:24 06/21/05 (0)
- stack? - Jon L 14:52:05 06/20/05 (1)
- Re: stack? - Dave Garretson 05:42:58 06/23/05 (0)
- Re: BUF634 problem with midrange grit - owen 07:16:57 06/20/05 (3)
- Re: BUF634 problem with midrange grit - Dave Garretson 08:58:54 06/20/05 (2)
- Re: BUF634 problem with midrange grit - Owen 04:06:27 06/21/05 (1)
- Re: Question re Zobel - Dave Garretson 12:18:56 06/29/05 (0)
- A few things to try... - Charles Hansen 03:27:10 06/20/05 (3)
- Re: A few things to try...; input resistor - Dave Garretson 10:32:43 08/01/05 (0)
- Re: A few things to try... - Dave Garretson 06:16:27 06/20/05 (1)
- Re: A few things to try... - Charles Hansen 10:47:46 06/20/05 (0)
- I have used 634s and - analog_sa 01:59:44 06/20/05 (2)
- Re: I have used 634s and - Dave Garretson 06:24:46 06/20/05 (1)
- Of course i tried it :( nt - analog_sa 14:00:37 06/20/05 (0)
- You may have RF pollution from the AQ shield. - Al Sekela 15:00:29 06/19/05 (2)
- Re: You may have RF pollution from the AQ shield. - Dave Garretson 17:52:53 06/19/05 (1)
- I meant the IC cables. - Al Sekela 15:51:09 06/20/05 (0)
- Have you seen the data sheet? - clifff 14:36:09 06/19/05 (0)
- Re: BUF634 problem with midrange grit - Kal Rubinson 12:58:44 06/19/05 (4)
- Re: BUF634 problem; conclusion - Dave Garretson 10:43:08 07/07/05 (0)
- Re: BUF634 problem with midrange grit - Dave Garretson 13:51:14 06/19/05 (2)
- +/-9V is kinda marginal. (NT) - Kal Rubinson 08:15:16 06/21/05 (1)
- Re: +/-9V is kinda marginal. (NT) - Dave Garretson 05:48:25 06/24/05 (0)