Marantz CD63 & CD67 mods list - Page 42 - diyAudio
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Old 23rd January 2006, 01:35 PM   #411
Franz G is offline Franz G  Switzerland
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Quote:
I dont know about you but here in the UK the solder is now lead free and it's ****. Its 60/40 Tin Copper.
BTW: it is still legal to sell and use solder wire including lead! It is not allowed to produce and sell complete devices, including some lead.

It is completely wrong, to repair an old device with lead free solder, as both qualities mixed don't behave well.

For medicinal and military devices, lead is still allowed.

Franz
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Old 23rd January 2006, 02:27 PM   #412
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Quote:
Originally posted by 6h5c

How many pcs. did you quote for?
Five, ten... and twenty
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Old 24th January 2006, 02:11 PM   #413
6h5c is offline 6h5c  Netherlands
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I requested a quote too, from Amplimo here in The Netherlands for 10 pcs., just to see what happens.
I'm curious what their price will be.

Ray.
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Old 24th January 2006, 02:15 PM   #414
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nice one you two
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Old 24th January 2006, 02:32 PM   #415
6h5c is offline 6h5c  Netherlands
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So, while we are in suspense for the trannies, what's the next mod-move on the CD63/67 players?

Personally, i'm scraping parts together for a tube output stage, to get rid of the opamps (= feedback) entirely. Will need another custom tranny for that I guess, since it needs heatervoltage and >200V or so.

Anyone out there that already built one and has good tips?

Regards,

Ray.
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Old 24th January 2006, 02:39 PM   #416
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I have never messed with tubes so I am hopeing you get on with it Ray

My next little mod will probably be the HF circuit. Silver Mica caps and 0.1% tol welwyn resistors.

And then back on to my amp
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Old 24th January 2006, 02:41 PM   #417
SimontY is offline SimontY  United Kingdom
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I'm so happy with the sound of mine now that I've lost the urgency to mod it any further. I am currently thinking about an upgrade / extra bass potency for my speakers. In the meantime I will grow used to the new sound and will find the need to improve it again sometime soon hopefully. And when I do I will report here
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Old 24th January 2006, 03:11 PM   #418
poynton is offline poynton  United Kingdom
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Quote:
Originally posted by 6h5c
.......... Will need another custom tranny for that I guess, since it needs heatervoltage and >200V or so.


Hi.

Surely the tube Tx specs will depend on what tube is to be used. I have a load of 6BF7 (and equivalents ) and some E88CC.

HT for these can be low, 20v? so a 'special ' would not be required.
Also using a minature tube like 6BF7 means space would not be a problem.

Andy
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Old 24th January 2006, 03:20 PM   #419
poynton is offline poynton  United Kingdom
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Quote:
Originally posted by rowemeister


My next little mod will probably be the HF circuit. Silver Mica caps and 0.1% tol welwyn resistors.

Hi.

I am half way through modding the HF section in my '63.
The main problem here is the +5v supply. It's fed serially of the same +5v as the uP (MN187164 - QF01 ) and so will be picking up LOADS of hash !! I am cutting the feed and wiring direct to the 5v supply via screened cable. I have also fed the HF Transistors Q501/502 via screened cable for the same reason. The HF signal is now via screen cable from the HF pcb to R501. The original tracks have been isolated and grounded. The final stage is now underway. I have literally just returned from a shopping trip with some thin brass sheet to fabricate a screening 'box' around the HF board itself.

Andy
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Old 24th January 2006, 03:23 PM   #420
tms2000 is offline tms2000  Singapore
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Default Marantz CD63 & CD67 mods list

hi, in my cd63 i have ntice that c801 and c802 is missing , i like to put some caps there, can i use blackgate nx 0.1mf 50v
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