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Magic eye volume indicator in amp case-noisy???

166.250.32.177

david.osborne77@yahoo.com

I am rebuilding./modifying a Dyna SCA35 (with ST35 boards and EFB power supply). One of the fru-fru, utterly vain (sp?) tweaks I'd like to add is a pair of front-panel volume indicators. I ould go with conventional or magic eye, though my preference, as one might expect with the truly vain, is the latter.

Using them would entail mounting two magic eye indicator tubes, the driver circuits (all this stuff is available quite cheaply through one of the ebay DIY stores). a tranformer (with both 230v and 6-6.3v feeds) and, as I'm not really clear on whether it's needed or not, POSSIBLY a simple rectification circuit.

Has anyone done this? Someone must have at least tried. Again, everything associated with the magic eye circuit needs to go IN THE AMP CASE. I have some concern that this will add noise to the amp.This was expressed to me by several people, although none have been able to tell me that this equiptment will or wont do it.

Can anyone te;ll me if it's likely to be noisy, and, if so, if it can be shielded/buffered/whatever so as to be functional without ruining what I know from experiance to be a very nice sounding, clean amplifier????????

Help

Follow Ups:

they include a triode (an amplifier!), and are not noisy IME. - Timbo in Oz 15:50:05 07/19/12 (0)
My 'tuner' has two one for AM signal strength and one for FM signal strength.

If they were noisy than it would effect AM radio SNR on the audio, wouldn't it? NB the AM from the tuner is wide bandwidth not the usual 60-3.5khz bump.

Finding room in the SCA35 will be the issue. Unless your speakers are large horns and/or your room tiny, you'll be able to hear clipping on acoustic music, easily.

A clipping LED would be cheaper, to boot.

Is thread should be on Diy Tubes, where you'll find real experts.
Note that a post in response is preferred.

Warmest

Timothy Bailey

The Skyptical Mensurer and Audio Scrounger

And gladly would he learn and gladly teach - Chaucer. ;-)!

'Still not saluting.'
RE: Magic eye volume indicator in amp case-noisy??? - Tweekeng 06:32:25 07/19/12 (1)
Since the magic eye is basically a micro CRT I suspect it would be noisy.
- RE: Magic eye volume indicator in amp case-noisy??? - fmak 11:12:52 07/20/12 (0)
  Don't they look good though.
  The sought after Marantz tuner has a scope and is aclaimed as one of the best around.
  
  Edits: 07/20/12

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