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Old 31st March 2003, 04:55 PM   #11
guido is offline guido  Netherlands
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Dont forget there is an 1541 and there are 1541A's (normal,s1,s2)
So not all players are interesting. E.g. my cd650 has the 1541.
The A version is supposted to be better.

Greetings,
Guido
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Old 1st April 2003, 01:48 AM   #12
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I have an old 8x CD-ROM drive (1996) with a pair of them in it. More likely to get an old one of those for free. People throw them out mostly because they are not fast enough, not because they have stopped working.
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Old 1st April 2003, 05:27 AM   #13
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If the CDrom is made in 1996 it will probably have TDA1543(A) and not TDA1541A.

Old Aristona, Erres and Magnavox cd-players had the chip as well. Sony CDP-M95 and CDP-950 have it. Old Arcams have it.

I wouldn't recommend the non os mod just like that. You will have to change the whole output circuitry when you do. Most don't do that and the endresults of removing SAA7220 will be disappointing after all. Better make an external non os DAC instead and let the player be 4 x Fs.

Decouple the SAA7220 very good. Preferably OSCON or the like. Stupid but effective mod: solder a solid core wire over the ground track on the main PCB !
Grounding is not the strongest point in old Philips players and soldering the wire will make a cheap and very effective mod...
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Old 1st April 2003, 11:28 AM   #14
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Ah yes I should have said 1541A!

Still I have a CS8412 and fancied non os'ing something. I think I'll look for an old marantz and then play around.

Cheers Guys
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Old 1st April 2003, 09:07 PM   #15
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If you fancy non osing something TDA1543 will be OK for a start and it'll be cheaper, much easier to find and easier to build

And it'll be very good !
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Old 3rd April 2003, 09:09 AM   #16
aesse54 is offline aesse54  Italy
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Here are some more:

Orelle CD100

Philips 465, 650

Revox B226 (1541AS1)

Rotel 855 (1541AS1)

Sudgen SDT-1 (1541AS1)
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Old 26th May 2004, 05:51 PM   #17
DJMC is offline DJMC  Spain
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Default More 1541s

The philips cd820 has a 1541A inside. One more in the list!
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Old 27th January 2005, 08:03 PM   #18
ash_dac is offline ash_dac  United Kingdom
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Mission PCM7000 has a socketed tda1541
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Old 10th February 2005, 01:20 PM   #19
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Hi all,

found this List .

Cheers,

Bruno
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Old 31st March 2005, 10:25 AM   #20
tubenut is offline tubenut  South Africa
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Quote:
I wouldn't recommend the non os mod just like that. You will have to change the whole output circuitry when you do. Most don't do that and the endresults of removing SAA7220 will be disappointing after all. Better make an external non os DAC instead and let the player be 4 x Fs.

Decouple the SAA7220 very good. Preferably OSCON or the like. Stupid but effective mod: solder a solid core wire over the ground track on the main PCB !
Grounding is not the strongest point in old Philips players and soldering the wire will make a cheap and very effective mod...
What is changed/should be changed to the output stage of a 1541A based player? The filters? How? Messing with a mission PCM II at the moment. Non os done and I think I like it apart from a certain hardness occasionall shrill sound in the highs on complex material.

Do you mean the ground track below the SAA7220? IE, you solder it on top of the track to create a chunkier mass of earth plane perhaps with lower resistance?

Thanks
G
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