With a scope and a DC Load....

Posted by D Harvey (M) on February 11, 2014 at 13:37:38

In Reply to: RE: Battery mod to homebrew phono stage. posted by Russtafarian on February 11, 2014 at 11:59:05:

....we could test those theories to some extent. I wouldn't be surprised to see "speed" become an issue with lead acid driving a power amp. A preamp seems less likely to cause this, but it would depend on the size and state of the battery in question. The Li cells I'm using (full disclosure--I work for the cell maker) can be made to sag and exhibit a certain level of "slowness" to deliver the full current requested, but you've got to pull a MUCH larger amount of current with regard to C-rate to do it.

Gotta say....as I continue to reduce the noise, the staging and HF clarity continues to improve. Listening the last hour or so.....very nice.

dh

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Follow Ups Full Thread

Topic - Battery mod to homebrew phono stage. - D Harvey 21:13:27 02/09/14 (21)

RE: Battery mod to homebrew phono stage. - jdiamantis 20:14:29 02/11/14 (1)

RE: Battery mod to homebrew phono stage. - D Harvey 13:59:16 02/12/14 (0)

One more suggestion - BobM 06:47:26 02/11/14 (1)

I may try that... - D Harvey 07:00:07 02/11/14 (0)

Made some good progress tonight. - D Harvey 20:12:00 02/10/14 (0)

"With the volume cranked" - Awe-d-o-file 15:07:17 02/10/14 (1)

Like I say above.... - D Harvey 20:15:18 02/10/14 (0)

RE: Battery mod to homebrew phono stage. - bjh 12:29:29 02/10/14 (1)

It's louder than I ever get... - D Harvey 12:54:08 02/10/14 (0)

RE: Battery mod to homebrew phono stage. - Russtafarian 09:55:47 02/10/14 (3)

RE: Battery mod to homebrew phono stage. - D Harvey 10:39:36 02/10/14 (2)

RE: Battery mod to homebrew phono stage. - Russtafarian 11:59:05 02/11/14 (1)

With a scope and a DC Load.... - D Harvey 13:37:38 02/11/14 (0)

Yes...you need the quiet OP Amps - EdAInWestOC 05:28:16 02/10/14 (1)

RE: Yes...you need the quiet OP Amps - D Harvey 06:59:09 02/10/14 (0)

High gain and small signal needs low noise op amps - reuben 04:47:12 02/10/14 (3)

Low noise. - D Harvey 05:08:02 02/10/14 (2)

RE: Low noise. - reuben 05:24:35 02/10/14 (1)

Just ordered some of both. - D Harvey 06:52:41 02/10/14 (0)

RE: Battery mod to homebrew phono stage. - morinix 00:23:17 02/10/14 (1)

RE: Battery mod to homebrew phono stage. - D Harvey 05:06:44 02/10/14 (0)

Follow Ups

With a scope and a DC Load.... - D Harvey 13:37:38 02/11/14 (0)

With a scope and a DC Load....

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