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Old 12th October 2012, 12:13 AM   #18531
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Here's what I'm doing:

Click the image to open in full size.

I'm building 5 dual 15V DC supplies (i.e. 10 total) with Nuvotem encapsulated toroids and 22,000uF Mundorf smoothers. I'm going to use these to supply the regulator for each 5V chip pin :-D
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Old 12th October 2012, 09:35 AM   #18532
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Hi Ben, Wow. I beleive you are using an external PSU case to accommodate all the stuffs. BTW are you going to use sPower as 5V regulators or build your own ?
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Old 12th October 2012, 09:42 AM   #18533
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Quote:
Originally Posted by bikeral10 View Post
Been doing a comparison test on diodes for the psu anyone tried vishay 1n5062 im amazed by them, tried hexfreds and few others .Any thoughts .

thx alan
Also ive changed lm4562s to lme49720s better opamp before i go to dos left it to settle for a few weeks now the itch is back???
I have just ordered more than 10 pcs of 1n5062 to replace all the psu diodes and I hope there will be improvements in SQ.
BTW presently I am also using LM4562 and am considering to purchase a pair of Burson discrete opamps but I need to find some more feedbacks before a final decision is to be made.
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Old 12th October 2012, 01:40 PM   #18534
UV101 is offline UV101  England
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I've not tried those diodes although Ive removed similar looking ones to replace with hexfreds. To be honest, I'm not sure that diodes make a significant change on their own. In fact I'd go so far as to say I'm not sure I could tell the difference on a blind test but I do believe they form part of the overall picture. Often many subtle changes add up to something more significant.

With respect to the Bursons, I have several that I've used as singles in TDA1541 I/V, duals that I've used in the 63 and my preamp. I think they are better than the 4562 but the HA version is exceptional and I would struggle to justify the burson over it. If you start to sort out the psu with decent caps and low noise regs, you be better with Bursons but on std regs I'd say not.

If you are thinking about Burson, you would definitely be better off with the DOS. Have a look on Rays site, he has boards ;-)
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Old 12th October 2012, 01:47 PM   #18535
Puffin is offline Puffin  United Kingdom
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Quote:
Originally Posted by Ben Hanke View Post
Here's what I'm doing:

Click the image to open in full size.

I'm building 5 dual 15V DC supplies (i.e. 10 total) with Nuvotem encapsulated toroids and 22,000uF Mundorf smoothers. I'm going to use these to supply the regulator for each 5V chip pin :-D
Is this player worth spending so much money on?
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Old 12th October 2012, 03:09 PM   #18536
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Quote:
Originally Posted by UV101 View Post
I've not tried those diodes although Ive removed similar looking ones to replace with hexfreds. To be honest, I'm not sure that diodes make a significant change on their own. In fact I'd go so far as to say I'm not sure I could tell the difference on a blind test but I do believe they form part of the overall picture. Often many subtle changes add up to something more significant.

With respect to the Bursons, I have several that I've used as singles in TDA1541 I/V, duals that I've used in the 63 and my preamp. I think they are better than the 4562 but the HA version is exceptional and I would struggle to justify the burson over it. If you start to sort out the psu with decent caps and low noise regs, you be better with Bursons but on std regs I'd say not.

If you are thinking about Burson, you would definitely be better off with the DOS. Have a look on Rays site, he has boards ;-)
Right. As I mentioned in my previous thread I am in the process of replacing the stock transformer with 3 independent torroidal transformers. If I finish with that one I will change the 7812 and 7912 on the analogue rail with two sPowers as well as two 22000uF caps. That would pave way for the Burson dual opamps (or DOS as you have suggested).
For the rectifiers I have also ordered 1N5819 Schottky diodes and I will compare them with 1N5062 Avalanche rectifiers at a later stage. As you said I don't think there will be a lot of differences.
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Old 12th October 2012, 03:43 PM   #18537
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Quote:
Originally Posted by higlander View Post
Hi Ben, Wow. I beleive you are using an external PSU case to accommodate all the stuffs. BTW are you going to use sPower as 5V regulators or build your own ?
I'm hoping to cram them in the case, actually. I currently have a bunch of the 'off-piste' LM317 regulators with LEDs in there, but I'm working up to something better - just not sure what. I'd ideally like to build them myself because that's half the fun.

Quote:
Originally Posted by Puffin View Post
Is this player worth spending so much money on?
That's a tough question to answer, and must've been covered several times in this thread. It's just a hobby at the end of the day.

Anyway, this wasn't even that spendy as hi-fi stuff goes. I got a 10 or 15% discount on the transformers and 40% off the caps. The rest of the bits will be peanuts.
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Old 12th October 2012, 04:35 PM   #18538
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I have spent about £50 on a player that cost me £20. I feel that I have got it to quite a respectable level. Time to stop......maybe
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Old 12th October 2012, 04:39 PM   #18539
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Quote:
Originally Posted by Puffin View Post
Time to stop......maybe
Who, you or me? ;-)
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Old 12th October 2012, 04:43 PM   #18540
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Forget what you paid. Do some mods then go to see what in compares to!

I got back into all this when a £50 63 with a clock, opamps and some caps wiped the floor with an ex demo MF that I had at home costing 8 x as much!!!

DOS with SPowers and decent output caps is awesome :-)
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