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Old 2nd April 2008, 09:05 PM   #9581
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Yes do it. The cd player is less sensetive to poor gnds than an amp but the principle is still the same. And once you have a star gnd installed you can run all new psu gnds to it.

Brent
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Old 2nd April 2008, 09:14 PM   #9582
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by rowemeister
Yes do it. The cd player is less sensetive to poor gnds than an amp but the principle is still the same. And once you have a star gnd installed you can run all new psu gnds to it.

Well that will be easy... my mains are earthed.

What type of resistor should I use... bypassed by a cap (small big?)

Can you suggest a good value (my mains are rated at 220V)

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Ricardo
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Old 2nd April 2008, 10:29 PM   #9583
RCruz is offline RCruz  Switzerland
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I mean... I can not earth the thing directly to mains earth, can I ?

I have seen some circuits where a small resistor is used (6ohm) and a small cap bypassing the resistor.


Comments please.....

Ricardo
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Old 2nd April 2008, 11:23 PM   #9584
SimontY is offline SimontY  United Kingdom
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I have installed a "ground lift" switch in mine so I can easily try it either connected to house earth or not.

If you permenantly connect it but get an earth loop hummm you may want to connect it via a resistor. Brent does this with something like 10R or so.

Simon
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Old 3rd April 2008, 07:33 AM   #9585
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Yep I used a 27 ohm 2W resistor from star to earth on IEC socket to eliminate a small hum. The small hum was actually caused by another piece of equipment. I have a resistor on all my equipment now.

Brent
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Old 3rd April 2008, 07:33 AM   #9586
6h5c is offline 6h5c  Netherlands
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Quote:
Originally posted by rowemeister
Lurking lol

Good to hear from you Ray

Brent
Hi Brent,

I see business is as usual here
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Old 3rd April 2008, 07:45 AM   #9587
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Yep pretty much lol. I have to post in bursts between my work .

Upgrading quite a few cd players at the moment, we have a Marantz CD6002 and Cambridge Audio Azur 640 V2 in. Both nice cd players with a different approach to where the design of the circuits. Marantz goes for its usuall nice caps in vital areas approach and decent rail seperation where the Cambridge as fitted a better TX and concentrated on the clock and servo areas. A combination of the two ideas would sound very good.

The Marantz has the edge overall but both sound very good for budget cd players (250-300 range) both miles better than a cd63 in standard form.

Brent
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Old 3rd April 2008, 08:06 AM   #9588
6h5c is offline 6h5c  Netherlands
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Oh the 6002! That's a pretty decent player. Pity it uses the Sony transport
But the DAC is not bad and NO opamps in the analog section! It looks a bit like a shrunk SA7001. Only the SMDs are a bit fiddly. Do you have a manual you would be willing to share?

Ray
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Old 3rd April 2008, 08:09 AM   #9589
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I do have a manual yes, it was sent in paper form though and we dont have a scanner at the mo.

I'll see what I can do though

Brent
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Old 3rd April 2008, 08:16 AM   #9590
6h5c is offline 6h5c  Netherlands
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Yes please yes ! That would be great Brent!

Ray
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