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Post by electronumpty on Oct 22, 2021 10:18:05 GMT
Built this a while ago, 3 years omg. Anyway haven't looked inside since then and then started reading about quiet voltage regulators. Anyway a couple of AA posts later 🙂 and then the postie arrives with some tarty bits to try. So ordered one of these, a 7812 replacement. www.hificollective.co.uk/content/dexa-newclassd-voltage-regulator-mk2.html£30 so thought I'd give it a try out. Quieter supply can't be a bad thing can it... ? |
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Post by electronumpty on Oct 22, 2021 10:19:53 GMT
Anyway this is what it looked like witht the top off. The reg to be replaced is top right with the heat sink attached.  |
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Post by electronumpty on Oct 22, 2021 10:21:23 GMT
Board out and close up of the offending 7812  |
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Post by electronumpty on Oct 22, 2021 10:22:48 GMT
Old one out and slightly wonky new one for comparison.  |
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Post by electronumpty on Oct 22, 2021 10:23:44 GMT
Heat sink butchery! 🤫  |
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Post by electronumpty on Oct 22, 2021 10:24:59 GMT
New one fitted, heat sink in place with thermal tape.  |
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Post by electronumpty on Oct 22, 2021 10:31:56 GMT
All backi in and working , was worth it for the bonus blue led 😉  |
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Post by brucew268 on Oct 22, 2021 11:37:12 GMT
Always like a little HiFi-DIY porn. Well done. Looking forward to listening impressions as they shift!
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Post by macca on Oct 22, 2021 11:48:01 GMT
thought I was the only one still using a DCB1.
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Bigman80
Grandmaster
AA Founding Member & Bigbottle Audio Creator
Posts: 16,091
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Post by Bigman80 on Oct 22, 2021 11:49:45 GMT
All backi in and working , was worth it for the bonus blue led 😉 Excellent. Well done! And............. |
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Post by electronumpty on Oct 22, 2021 12:28:53 GMT
and I'm looking at my bb3's 7805 and wondering....🤔
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Post by electronumpty on Oct 22, 2021 12:33:06 GMT
Only had 30 mins on it, interesting will give it a bit more time before commenting.
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Post by electronumpty on Oct 22, 2021 12:57:31 GMT
thought I was the only one still using a DCB1. I'm in no rush to change 🙂 |
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Bigman80
Grandmaster
AA Founding Member & Bigbottle Audio Creator
Posts: 16,091
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Post by Bigman80 on Oct 22, 2021 13:07:44 GMT
and I'm looking at my bb3's 7805 and wondering....🤔 The 7805 is on the heater voltage and thus totally irrelevant.....also, when I tried a cheapy Chinese one....it was so hot it was unsafe. Different demands on it. Leave it be. |
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Post by misterc on Oct 22, 2021 14:57:37 GMT
Y
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Post by misterc on Oct 22, 2021 14:59:02 GMT
Heat voltages not so imprtant for most, grid stability voltage different kettle of fish imho
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Post by macca on Oct 22, 2021 16:10:45 GMT
thought I was the only one still using a DCB1. I'm in no rush to change 🙂 No, me neither. It does it exactly how I like it. |
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Post by electronumpty on Oct 22, 2021 16:50:58 GMT
ok been playing a couple of hours now. Impressions, in a nutshell - better tone and timbre in the bass. The notes seem to have more body to them. This makes music as a whole more "solid" or "rounded" for want of better words.
Not less detailed or dynamic but more synergistic, sounds kind of odd but that's how I would describe it atm. more later. Certainly a positive effect though.
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Post by gninnam on Oct 22, 2021 18:53:25 GMT
Great result for such a minor 'tweak' - congrats  |
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Post by sq225917 on Oct 22, 2021 21:54:44 GMT
Is that the spx reg?
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Post by electronumpty on Oct 22, 2021 22:47:38 GMT
No, Dexa uwb2 , didn't really look at the spx. Not sure if there us a uk supplier. |
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