Marantz CD-50 and CD-60, TDA1541, CDM4/19 - Page 5 - diyAudio
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Old 1st December 2011, 01:47 PM   #41
UV101 is offline UV101  England
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Quote:
Originally Posted by Mayday View Post
Thanks! I really appreciate you taking the time to help

While searching ebay I came across these, any good in the spots you put the Mundorfs?
Those are MKP 4.7uF film caps. They are for the signal path and not PSU. Those are ideal for coupleing the opamp output to the sockets on the back if you want to bypass the muting transistors or just to replace the small green Muse BP that are the std output coupling. I think in my large post yesterday, I mentioned 4.7uF MKP's for this purpose.
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Old 1st December 2011, 02:02 PM   #42
Mayday is offline Mayday  Sweden
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Quote:
Originally Posted by UV101 View Post
Those are MKP 4.7uF film caps. They are for the signal path and not PSU. Those are ideal for coupleing the opamp output to the sockets on the back if you want to bypass the muting transistors or just to replace the small green Muse BP that are the std output coupling. I think in my large post yesterday, I mentioned 4.7uF MKP's for this purpose.
Yes, that's what I was reffering to, you used Mundorf filmcaps there in one of the pics you posted on page2.

Sorry if I was unclear.
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Old 1st December 2011, 02:16 PM   #43
UV101 is offline UV101  England
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No problem, my mistake was just that I'd referred to Mundorf mlytic in my previous post. yes I'd use them where I used the White Mundorf mkp's in my photo's.
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Old 1st December 2011, 04:34 PM   #44
Mayday is offline Mayday  Sweden
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I think I'll get them then
Not to expensive
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Old 1st December 2011, 06:38 PM   #45
Mayday is offline Mayday  Sweden
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Swapped some Pana FC 100uF/50V for two 22000uF/25V TSUP(one for each of my cd-players)
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Old 1st December 2011, 08:13 PM   #46
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.........and what happened...... ?

Tell us about the sound....is it better ?
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Old 1st December 2011, 08:20 PM   #47
Mayday is offline Mayday  Sweden
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.........and what happened...... ?

Tell us about the sound....is it better ?
Sorry, I ment to say that I traded some Pana FC's for two tsup's.
He gets the FC's, I get the TSUP's
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Old 1st December 2011, 09:12 PM   #48
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Right !

C'mon then..hurry up - get them in and let us know

This thread is getting good now - bravo
It's nice that UV101 is here for you - you could not have a better
coach - have you seen his work and read his stuff ?
( hide your ears UV please )

My machine is clocked how it is because of his paper on advanced re clocking.

...and you certainly won't appreciate the sound of NOS once you hear what happens when you silence the SAA7220 with it's own p - supply and prevent it from doing clock distribution - it's quite amazing.

Andrew
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Old 1st December 2011, 09:40 PM   #49
UV101 is offline UV101  England
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Was looking at my unmolested CD50 this evening and realised I forgot cap 2612 which is the local decoupling for the RAM that attached to the SAA7310 decoder chip. As these operate in the digital domain, I'd change my recommendation for these 2 chips to solid polymer electrolytic like Nichicon PLE or OsCon SEPC. These are extremely low ESR and excellent on digital rails but definitely not recommended on analogue rails.

Anyway, the temptation was too much, A reg on the 7220, A clock directly feeding the 7310 and 7220, 8 Rubycon 470uF/16v ZLG (Opamps, TDA and 7220), 2 Nichicon solid polymer 330uF/6.3v (7310 and RAM) a couple of LME49860 audio grade opamps later and I've got something thats a million miles from its original wooly self.

Detail has jumped right out, soundstage is fuller with much better placement. Treble jumps out, mids are smooth and bass is tighter, more accurate and deeper. Everything sounds more controlled. To be honest, you really wouldn't recognise it as the same player.

I'll replace the PSU caps tomorrow and swap out the MUSE BP for some basic film caps.

I'd actually forgotten how much difference these changes make and its not even settled in yet! ;-)
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Last edited by UV101; 1st December 2011 at 09:44 PM.
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Old 1st December 2011, 10:23 PM   #50
UV101 is offline UV101  England
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Thanks for the kind words Andrew. Its nice to be appreciated but I cant take all the credit. There are many very clever people on this forum, I'm fortunate enough to have taken in what people have been prepared to share, try it for myself and share my own experiences. I have a real soft spot for anything that has a TDA1541 in it! The great thing is, you can get a 2nd hand player for very little and with a few carefully selected components, turn it into something that would put a lot of modern commercial stuff to shame which is so satisfying. All this modding has lead me to make my own clocks and regs. 1st on vero and more recently on some PCB's I had made. This makes it all the more affordable and even more enjoyable. Its also nice to give something back here too ;-)

Anyway, here's couple of pics of tonights little effort!!! Enjoy :-)

Click the image to open in full size.

Click the image to open in full size.
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