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Old 22nd May 2008, 06:09 PM   #10021
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Default Quite a long thread

I just wanted to say thank you to you guys and I'm sure there are hundreds like me. About a year ago I started thinking about my 63KI player ageing and sounding very limited compared with half-decent vinyl and stumbled across this huge source of knowledge. With info from you guys and a little (!) soldering help from a friend, and a budget of not much more than 200, the player is transformed and plays music
in a way that sounds like the mastertape. For me, it doesn't get better than that.

So thank you all and Congratulations

A Quite Extraordinary Achievement
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Old 22nd May 2008, 07:23 PM   #10022
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Quote:
Originally posted by avr300
Congrats also from here. It has been a pleasure and fun to participate.

Let's push it and get the 0.5M views.

Interestingly, the thread also hit 400 pages within a day or two of 10,000 posts. 500,000 views or 500 pages next!
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Old 22nd May 2008, 09:34 PM   #10023
RCruz is offline RCruz  Switzerland
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Now you are there...!!!

Thank you Ray for the unconditional support.

Regards

Ricardo
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Old 23rd May 2008, 03:09 PM   #10024
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by rowemeister
I would use 2x 220uF BG minimum but 2X 470uF BG is fine.

Hi Brent

I am now building a dedicated psu for the dac.

I will use one BHC 10.000uF for smoothing dac analog after the schottkys. Should I bypass this cap with a 100nF plastic ?

Another question... The 15VA 2x9v TX I am using is quite big... Can I place it near the output opamps ? I am afraid it might cause hum problems.

Regards

Ricardo
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Old 23rd May 2008, 04:07 PM   #10025
6h5c is offline 6h5c  Netherlands
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Default Re: Quite a long thread

Quote:
Originally posted by avr300
Congrats also from here. It has been a pleasure and fun to participate.

Let's push it and get the 0.5M views.
Quote:
Originally posted by micky127
I just wanted to say thank you to you guys and I'm sure there are hundreds like me. About a year ago I started thinking about my 63KI player ageing and sounding very limited compared with half-decent vinyl and stumbled across this huge source of knowledge. With info from you guys and a little (!) soldering help from a friend, and a budget of not much more than 200, the player is transformed and plays music in a way that sounds like the mastertape. For me, it doesn't get better than that.

So thank you all and Congratulations

A Quite Extraordinary Achievement
Quote:
Originally posted by RCruz
Now you are there...!!!

Thank you Ray for the unconditional support.

Regards

Ricardo
Thanks guys, it's great to hear that you appreciate it.

B.T.W. the colleague i'm helping to modify a player: we plugged it in today, only one exploding cap! Not bad for a first timer! It scared him to death though...

Ray
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Old 23rd May 2008, 04:29 PM   #10026
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Quote:
Originally posted by RCruz

Hi Brent

I am now building a dedicated psu for the dac.

I will use one BHC 10.000uF for smoothing dac analog after the schottkys. Should I bypass this cap with a 100nF plastic ?

Another question... The 15VA 2x9v TX I am using is quite big... Can I place it near the output opamps ? I am afraid it might cause hum problems.

Regards

Ricardo
I wouldn't bother with the 100nF.

The TX should not cause hum

Brent
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Old 23rd May 2008, 04:30 PM   #10027
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Default Re: Re: Quite a long thread

Quote:
Originally posted by 6h5c

B.T.W. the colleague i'm helping to modify a player: we plugged it in today, only one exploding cap! Not bad for a first timer! It scared him to death though...

Ray
Haha a great way to introduce him to electronics.

Brent
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Old 23rd May 2008, 06:32 PM   #10028
RCruz is offline RCruz  Switzerland
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Default Re: Re: Quite a long thread

Quote:
Originally posted by 6h5c
B.T.W. the colleague i'm helping to modify a player: we plugged it in today, only one exploding cap! Not bad for a first timer! It scared him to death though...

Hi Ray

I had a similar experience the first time I built my Steimusic Philips CDP.

The cap was on reversed polarity

Now it plays wonderfully.

Ricardo
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Old 23rd May 2008, 06:35 PM   #10029
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by rowemeister


I wouldn't bother with the 100nF.

The TX should not cause hum

Thank you Brent

I will place the TX very near the opamps. (over them).

For the digital dac psu I am considering one 4700 Pana FC bypassed with one Oscon 10uF.... should it be enough ?

Regards

Ricardo
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Old 23rd May 2008, 08:05 PM   #10030
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The digital caps should work ok. I'm not a big fan of small bypass caps but the 10uF would be fine. I prefer to keep it all simple but this also means you need good quality parts to start with. Eg I would never bypass a BG and would not use bypassing when using good regs.

If you are putting the tx over the opamps I would (just in case) put a shield between and of course connect this to gnd.

Brent
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