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Old 9th June 2011, 08:47 AM   #101
SimontY is offline SimontY  United Kingdom
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I don't remember where I got it from but it was beautiful to use, probably can't get it any more

It wasn't from Lee.
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Old 9th June 2011, 10:44 AM   #102
Thomo is offline Thomo  United Kingdom
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Farnell & RS etc still sell 60/40 tin/lead for repair work

edit: the only nice to use lead-free I've found is the Mundorf MSol, but it's 1mm thick and that's not ideal for the smt work.

Lee.
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Old 9th June 2011, 02:36 PM   #103
SimontY is offline SimontY  United Kingdom
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I still have some 5% silver Mundorf solder you sold me, that works well but obviously it's harder to use than normal solder.

Good to know you can still buy the tin/lead mix!
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Old 9th June 2011, 06:53 PM   #104
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It's done - Polystyrene cap in - additional ground links around the dac, resistors out and new caps in.

OK, the capacitance is only 13,600 uf ( as opposed to the standard 6 ) but my god after 45 minutes it's opened out VERY noticeably in bass solidity, attack in the midrange and the highs seem well, higher.
It feels louder - if you know what I mean.

This is a big step Simon - like when I first powered the 7220 with the simple 7805.

Bloody hell - 2 caps and some wire - got any more like this up your sleeve ?

Astonished - grateful

Andrew
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Old 9th June 2011, 07:55 PM   #105
SimontY is offline SimontY  United Kingdom
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I'm glad you got some good gains there too! Without a full mods list vs what I've done to mine it's hard to say if you're missing any huge things (other than the S Powers).

My sound got quite a lot smoother and more refined with better bass from upgrading thos caps.

I made another of those giant Silmic cap banks so the decoder (SAA7310) and digital filter (SAA7220) will both be treated to perhaps better smoothing. I might also put a pre-reg on each of those rails off-board. It will probably only be a modest upgrade but it will keep some regulation heat out of the player itself, which is a good thing in these old warm-running machines. The SAA7220 draws a lot of juice. The 7310 is insignificant in comparison, unlike the older and larger SAA7210 decoder chip.

Simon
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Old 9th June 2011, 08:57 PM   #106
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Thanks

I think your being very modest as always

I'm several transformers down, then there's your very nice output stage plus all the super regs and the very high quality clock..
The component quality plus the va and uf count is in another league compared to mine and probably most other peoples efforts too.

However, my super budget version, thanks to you, already performs well above anything I can afford.

On the 18th May 2010 you said : ' We just need to fix some (many, to be honest) problems and it will sing beautifully '

You were right -

Andrew
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Old 9th June 2011, 09:02 PM   #107
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Just how big was that bag of Silmics for god's sake ?

Will you have them off board - I can't see where you'll put them ?

Hey, if you have 40 spare .........

Andrew
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Old 9th June 2011, 09:03 PM   #108
SimontY is offline SimontY  United Kingdom
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It is a good CD player, even quite good as standard, and responds well to the work as most do. I'm not trying to be modest, and I will say my player sounds quite superb. This is no lie! I just meant to say that there are some very key mods are when those are done the laws of diminishing returns will kick in and ramp up progressively as you cram the thing full of nice regs and power supplies and clock feeds.

Perhaps there is a lot more you can do, maybe there is still quite a lot I can do too! I've not quite finished with this machine yet

Funny thing is, I know this player here in front of me is a bit special but I wonder if anyone would ever believe it without doing mods themselves. I suspect not.

I feel a bit of a need to try and make it compete with friends' cd players, at least one of which is really the benchmark of how far you can go on a CDP. I don't think there's anything else like that so my efforts seem quite basic by comparison.
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Old 9th June 2011, 09:07 PM   #109
SimontY is offline SimontY  United Kingdom
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The bag was very big indeed! These supplies are already off-board in my external power supply box. There's plenty of room to play in there. The chassis is from an old Sherwood Pro Logic amp / decoder - a bit defunct so I stripped the innards and recycled the box.
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Old 9th June 2011, 10:28 PM   #110
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That's like ....a skip, not a bag !!

I read your friends list of mods on his website and it is kind of breathtaking.
He has the resource and the knowledge to shove everything in - including the sink and taps - must be nice.

I have some new friends through this site who are very focused on discrete ps for everything inside their players - DAC, 7310, 7220 etc
They are implementing their own designs and turning modest Marantz machines into killers - one has even taken the guts out and made his own wooden case and made the transport a top loader....is this the way forward ?
Like, no metal case and total mass loaded isolation ?
I like this idea and understand the argument.

One of them is a very keen advocate of DEM re clocking and is pushing me to have a go.........me ?
Without pictures ? Impossible

I may leave the DEM bit alone but discrete ps, wood and top loading - I can do that.

Hey, your good with timber

Just a thought

Andrew
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