Marantz CD63 & CD67 mods list - Page 1798 - diyAudio
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Old 19th February 2012, 09:22 AM   #17971
UV101 is offline UV101  England
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Remove c901 and 902 to stop the audio going to the circuit. Remove u271 and 272 to isolate the voltage supplies to the opamp.

Have you got the service manual? You should try to follow the circuit ;-)
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Old 19th February 2012, 09:24 AM   #17972
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Thanks.
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Old 19th February 2012, 10:11 AM   #17973
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Can I just check it is 901 and 902 and not 903 and 904?
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Old 19th February 2012, 12:21 PM   #17974
UV101 is offline UV101  England
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Quote:
Originally Posted by UV101 View Post
Remove c901 and 902 to stop the audio going to the circuit. Remove u271 and 272 to isolate the voltage supplies to the opamp.

Have you got the service manual? You should try to follow the circuit ;-)
903 and 904 are the psu decoupling caps for the opamp. These will already be out of circuit if you do the above. The links I identified remove the +/-12v psu to the opamp and it's decoupling caps (903&4). As I say, take a look at the service manual, it's all there. We'll help you to understand it ;-)
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Old 19th February 2012, 02:29 PM   #17975
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Thanks UV. I did have a look at the schematic and saw they were in the same circuit.
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Old 19th February 2012, 07:20 PM   #17976
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Is the CD-67 (non-SE) a worthwhile pickup? As opposed to the other models?

Last edited by DreadPirate; 19th February 2012 at 07:37 PM.
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Old 20th February 2012, 07:47 AM   #17977
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Nice one Ben. Getting there now

Brent
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Old 20th February 2012, 07:49 AM   #17978
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Quote:
Originally Posted by DreadPirate View Post
Is the CD-67 (non-SE) a worthwhile pickup? As opposed to the other models?
Personally I would always go for a 63SE or KI. They can be pushed much further.

If you do get a 67 get the SE as the chassis is better.

Brent
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Old 20th February 2012, 08:06 AM   #17979
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Seriously, the wife described the clock upgrade as "Lasik for audio". That's big news. I've been modding for about two years now and this is the biggest jump ever. The best thing is that everything sounds good still - I'm listening to Soundgarden 'Superunknown' right now, which I love dearly but is horrible quality. It sounds about the same as normal. Better recordings have jumped a million miles. I've done mods previously where treble has been enhanced and it's been ugly, but this is more like an increase in resolution. The mains hum has got even worse though; it's audible at 12 o'clock on the amp. I really need to sort it out somehow but otherwise I'm loving the sound right now so much.
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Old 20th February 2012, 08:12 AM   #17980
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If you did the clocks first before all the other work the jump would be small. Whats happened now is all the upgrades are working together much better. The servo clocking is a great tweak though.

Do you have any mains running near the output stage (like a tx)?

Brent
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