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Old 1st June 2013, 12:32 PM   #751
bkdog is offline bkdog  Australia
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Looks fantastic - many thanks Jan!

I hope they are available somewhere before too long - or even kits. I could use a few of these.

It would not be hard to score the boards between the two halves and just snap off a single reg - similar to how some of the salas reg boards are distributed.

bk
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Old 1st June 2013, 04:49 PM   #752
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Yeah, and I have a bunch of Salas neg boards in the drawer now
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Old 1st June 2013, 05:34 PM   #753
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One nice thing which PA did with his boards is provide for an SMT error amplifier -- if you rotate the chip 90 degrees you can put in pads for an AD825AR. Thus you can use both SMT and through-hole. The two 1K resistors in the output sense/divider should be provisioned for 1/2 watt.
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Old 1st June 2013, 07:57 PM   #754
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Jack, could you provide a bit more info on this? I built the SSR01 as provided in the instructions, but did not see anything (or missed it) regarding this option.
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Old 1st June 2013, 09:08 PM   #755
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You have it in the schematics and in the complete BOM. The transistors have SOT23/TO92 footprints. See Q5 in the picture.
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Old 1st June 2013, 09:38 PM   #756
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D'oh! Of course. There it is.
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Old 2nd June 2013, 02:17 PM   #757
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I find gold plated boards to be somewhat difficult to work with -- i've probably fixed more F4's and F5's for folks with issues that surfaced after the device was installed. Tin-plate is much easier to deal with.
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Old 2nd June 2013, 02:24 PM   #758
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Jack, I saw that you tested the SSR01 with the LT1028 and it had a lower noise figure. Are there any risks using the LT1028? IYO does it sound as good as the AD825?
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Old 2nd June 2013, 02:28 PM   #759
Flac is offline Flac  Netherlands
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Quote:
Originally Posted by peranders View Post
You have it in the schematics and in the complete BOM. The transistors have SOT23/TO92 footprints. See Q5 in the picture.
I've just finished the SSR1 & SSR2 with LM329 & LT1028, just running fine and having an auditable difference to the one I had. Well, it's almost no comparison against the 7815 & 7915. Based upon the review in Linear Audio. No measurements but sound stage improved & klinical sound (almost aggressive highs) is gone .... I think ....
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Old 2nd June 2013, 02:59 PM   #760
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Noise is the least of the problems.
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