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Old 13th July 2013, 08:08 PM   #19661
lymmlad is offline lymmlad  England
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I have set up a separate box and mounted 3 toroidals so far:
1 to power the servo
1 to power the servo clock and the dac clock (2 secondaries)
1 to power the output stage.

I have space for 1 more toroidal. Will it make a bigger (SQ) difference to power the dac (analogue and digital from 2 secondaries) or the decoder?

Thanks in anticipation from those in the know.
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Old 13th July 2013, 08:27 PM   #19662
lymmlad is offline lymmlad  England
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...or should I find space for 2 toroidals to power both?
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Old 13th July 2013, 09:05 PM   #19663
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Do both if you can. It's well worth it.
If I had to choose, I'd say do DAC first.
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Old 13th July 2013, 09:13 PM   #19664
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Martin Clark posted something on PFM about substituting 2 red LEDs in series to improve Flea performance.

pink fish media - View Single Post - DAC Kit - what else do I need?
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Old 14th July 2013, 08:19 AM   #19665
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What do you guys think of not having earths on the mains supply to a CD63 Ki? They do have a lot of metal. I know if you have an earth thats a point of dirty signal contamination, but I'm thinking of putting an IEC connector on, and using Belden shielded cable, sheath terminated at the plug end to sweep spurious signals away. The other obvious thing is electrical safety. Any thoughts?
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Old 14th July 2013, 10:41 AM   #19666
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Originally Posted by bish789 View Post
What do you guys think of not having earths on the mains supply to a CD63 Ki? They do have a lot of metal. I know if you have an earth thats a point of dirty signal contamination, but I'm thinking of putting an IEC connector on, and using Belden shielded cable, sheath terminated at the plug end to sweep spurious signals away. The other obvious thing is electrical safety. Any thoughts?
I normally do not fit an earthing wire to the casing as it might create an earth loop and caused 50Hz noise in the RCA output. Just have a go and if you cannot hear any noise there is no harm to fit an earth to the casing, otherwise just leave it out.
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Old 14th July 2013, 03:52 PM   #19667
RCruz is offline RCruz  Switzerland
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Originally Posted by UV101 View Post
That won't work....they need to be derived from the same clock
I am using two separated clocks, one for the servo and another for the dac with superlative results.

I did it on my 57
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Old 14th July 2013, 04:11 PM   #19668
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Separate DAC and servo clock is fine. They were talking about DAC and decoder.
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Old 14th July 2013, 05:11 PM   #19669
bish789 is offline bish789  United Kingdom
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Default Earth

I'll let you know what happens Higlander. Probably get around to it later next week
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Old 14th July 2013, 08:23 PM   #19670
lymmlad is offline lymmlad  England
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Originally Posted by Ben Hanke View Post
Do both if you can. It's well worth it.
If I had to choose, I'd say do DAC first.
Ben, thanks for this. Have you done both? I'm wondering whether it makes an appreciable difference. (I'm going to do it anyway! )

As you suggest, I'll do DAC first.
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