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-   -   Marantz CD-50 and CD-60, TDA1541, CDM4/19 (https://www.diyaudio.com/forums/digital-source/201057-marantz-cd-50-cd-60-tda1541-cdm4-19-a.html)

Mayday 12th December 2011 06:43 PM

Quote:

Originally Posted by UV101 (https://www.diyaudio.com/forums/digital-source/201057-marantz-cd-50-cd-60-tda1541-cdm4-19-a-post2817126.html#post2817126)
Just noticed thisreading back through the posts I've missed!!! I'm very keene to point out that I'm not a supplier. I do have a good relationship with Brent (who is also a member here) at "Fidelity Audio"/ "Audio Upgrades" and I have purchased lots of his products. I have no problem recommending him or his products.

I've offered to supply components to a fellow user here, sourced from RS in the UK at cost plus postage, as perticular items are proving difficult to source. I can do this only because I spend too much money on components and as a result have accounts with a couple of component suppliers.

My website is non commercial.....all this is just for fun! I have a pretty stressfull job in IT and this is one way I can switch off without completely switching off!!!:eek:

Just to say again, that although I wrote some of that document, it clearly references the sections that were not written by me!!!

You only offered to help me out to get some parts that I have a very hard time getting my hands on, and you clearly stated that I'd just pay cost+shipping to Sweden.
I really hope you didn't get any grief for being a good guy!

UV101 12th December 2011 07:22 PM

no trouble ;) just wanted to point out the facts incase some people got the wrong idea.

Hows the player sounding?

Mayday 12th December 2011 07:53 PM

It's been an amazing transformation with the simple mods done so far :)
It's gone from being beaten by my USB-DAC to beating it :D

Tomorrow I'll get the caps(one for each player) for a simple DEM lock, also I think I'll swap the bipolar caps for MKP's...seems like a major operation to put the MKP between opamp and out bypassing the muting circuit.

Should get everything needed to make two regulators with dual green led's tomorrow or on Wednesday, Including dedicated trafos for each of them.
I know they'll be rather quiet from what I've read, but how close to 5Vdc do they need to be?
Is the regulator circuit I intend to use good enough to power a new oscillator (11.2896Mhz)? I've seen several on ebay that advertise low jitter etc, but don't have the experience to know what clock/seller to trust.
Do I need ferrite beads between PS and clock?

Hopefully I'll get the 1000uF low ESR caps to parallell the 3 non-TSU smoothing caps tomorrow or atleast this week.

When I get my pension on the 19th I'll get lead/rubber (self-adhesive) sheets to dampen the chassis.
I'll order 2pcs LM4562.
Possibly a new clock oscillator.
I'll pay you for the caps you so kindly offered to get me(470uF ZLH 10pcs and the ones for placing around the digital ciruits, SEPC?)
Also thinking of getting copper tape to shield IC's (connected to gnd).

AndrewGM 12th December 2011 08:42 PM

I think I already mentioned ' Vintage Audio Lab ' clocks on E Bay - remember ? The Red One ?
It'll do 11.289 - 5.6 and 2.8 simultaneously from a single 1PPM TCXO.
It cost me 25.00 + about 3 for post and was here in a week.
Even UV mentioned it to you as being OK.
You won't find better at that price. Nearest one that does something similar is going to cost you... A LOT..actually..175:eek:
It's a very good one though and you might even be rich - in which case buy 2 !!
No...buy 3.... and send me one !!

1PPM 11.2896 MHz Low Jitter TCXO Crystal Clock for DAC - copy and paste this - I can't do the link thing for some reason.

Andrew

Mayday 12th December 2011 08:50 PM

Quote:

Originally Posted by AndrewGM (https://www.diyaudio.com/forums/digital-source/201057-marantz-cd-50-cd-60-tda1541-cdm4-19-a-post2817547.html#post2817547)
I think I already mentioned ' Vintage Audio Lab ' clocks on E Bay - remember ? The Red One ?
It'll do 11.289 - 5.6 and 2.8 simultaneously from a single 1PPM TCXO.
It cost me 25.00 + about 3 for post and was here in a week.
Even UV mentioned it to you as being OK.
You won't find better at that price. Nearest one that does something similar is going to cost you... A LOT..actually..175:eek:
It's a very good one though and you might even be rich - in which case buy 2 !!
No...buy 3.... and send me one !!

1PPM 11.2896 MHz Low Jitter TCXO Crystal Clock for DAC - copy and paste this - I can't do the link thing for some reason.

Andrew

I have that one on my watch list :)
I was thinking maybe I could get away cheaper and as good?? with a good PS and just a clock oscillator...just a thought.
But with that module I can get separate signals different Mhz to the different needs in the player, correct?
Why put it together myself if ready-made is better and cost-effective, never mind me over-reaching :rolleyes:

AndrewGM 12th December 2011 08:58 PM

No no - this IS the one you need.

You can send an 11.289 and 5.6 to the DAC chip and 11.289 to the 7210 and 7220 from this unit.
You even have the 2.8 you'll need later ;)
It has decent on board rectification and regulation too - simple 10VA 9v - 12v ac transformer and your off.
I've bought from VALAB before and they are a top ebay trader - buy with confidence .

AndrewGM 12th December 2011 09:03 PM

One last thing - I followed UV101's advanced re clocking paper to the letter using this very clock and the gain was VERY noticeable indeed.

( the paper that was not written by him nor belongs to him but is merely a collection of other peoples work in one useful sheet.....by UV101 ) hahaha:D

and thank god he did !

Mayday 12th December 2011 09:05 PM

Quote:

Originally Posted by AndrewGM (https://www.diyaudio.com/forums/digital-source/201057-marantz-cd-50-cd-60-tda1541-cdm4-19-a-post2817566.html#post2817566)
No no - this IS the one you need.

You can send an 11.289 and 5.6 to the DAC chip and 11.289 to the 7210 and 7220 from this unit.
You even have the 2.8 you'll need later ;)
It has decent on board rectification and regulation too - simple 10VA 9v - 12v ac transformer and your off.
I've bought from VALAB before and they are a top ebay trader - buy with confidence .

As luck has it, I've got two 1x9Vac 10VA comming tomorrow or the day after :)
Will get that clock then, but I'll have to wait until the 21st or something due to banktransfer time to ebay(get paid the 19th). I never use creditcard there, I pay with paypal balance.

Will the 10VA single winding 9Vac trafo really be to small for 7220 PS?

Mayday 12th December 2011 09:21 PM

Quote:

Originally Posted by AndrewGM (https://www.diyaudio.com/forums/digital-source/201057-marantz-cd-50-cd-60-tda1541-cdm4-19-a-post2817575.html#post2817575)
One last thing - I followed UV101's advanced re clocking paper to the letter using this very clock and the gain was VERY noticeable indeed.

( the paper that was not written by him nor belongs to him but is merely a collection of other peoples work in one useful sheet.....by UV101 ) hahaha:D

and thank god he did !

I'll do the same then! Thanks!

AndrewGM 12th December 2011 09:22 PM

Personally, I think it'll get hot !!

I've got 50 VA for this - it's too big yes.. but it is a really horrible chip and needs a heavyweight to make it work.
Eventually it becomes the best chip in your machine after the power supply and clock job.
Once you prevent it from distributing clock signals and get it off the main ps rails it's fantastic at what it does to bass resolution, sound stage and analogue liquidity.
Like a very high end record player is what I can compare it too - without the scratches !


NOS is NOT as good as this - and I've tried both - for me anyway.
Others will disagree probably ( yawn )


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