Anyone make a VU with a magic eye ?

Colt45 · 24th July 2002, 05:15 AM

Just curious if any of you guys have done this..

I bought a lot of tubes a while back (hasn't got here yet though)

One of them is a 6FG6. Its a magic eye, with the phospor stuff on the side instead of the end. (Also known as EM84 I think... )

Just wondering if it was common place to use eye tubes for this application? or was it not very common..

I guess I would need two of these if I wanted to put it on a stereo amp. Oh well..

SHiFTY · 25th July 2002, 12:40 AM

Our family used to have an old valve reel-to-reel tape recorder that got thrown out (!#$!@$) which had a magic eye level meter... It was really nice... Glowed bright green.

You could just use one of these, just connect it up to only one channel. I mean, it doesnt really need to be accurate right! Usually channels are roughly the same level anyway.

cocolino · 25th July 2002, 02:16 PM

Hi colt45
I haven`t done it until now but sure I´ll do it once because I love the appearance of this magic eye tubes too.
Here`s a link to a great page that shows You EVERYTHING in detail about how to build Your own VU (even accurate) with magic eyes tubes:
http://www.megabaud.fi/~jtolonen/ga/...r/peakmtr.html
There are tubes for stereo application also (EMM801/803) but they are hard to find and expensive.

Gumboots · 26th July 2002, 11:42 AM

If you want stereo, magic eye tubes are usually pretty easy to find. Just look through any comprehensive stockist of NOS tubes. I see them all the time.

vacuumhead · 3rd December 2002, 10:34 PM

I made some. Used 0.1uF cap and Ge diode in series from speaker into 1M trimmer, whose slider goes to grid of EM. It works fast, interesting...

mbates14 · 19th October 2005, 07:01 PM

like SS circuits, you could use an RC time constant, to make a slower fall time.

kathodyne · 19th October 2005, 08:39 PM

have a look at :

http://www.aha.nl/tubelevel.aspx

24th July 2002, 05:15 AM	#1
Colt45 diyAudio Member Join Date: Feb 2002 Location: Canada	Anyone make a VU with a magic eye ? Just curious if any of you guys have done this.. I bought a lot of tubes a while back (hasn't got here yet though) One of them is a 6FG6. Its a magic eye, with the phospor stuff on the side instead of the end. (Also known as EM84 I think... ) Just wondering if it was common place to use eye tubes for this application? or was it not very common.. I guess I would need two of these if I wanted to put it on a stereo amp. Oh well..

25th July 2002, 02:16 PM	#3
cocolino diyAudio Member Join Date: May 2002 Location: Bavaria (south of veal sausage equator)	Hi colt45 I haven`t done it until now but sure I´ll do it once because I love the appearance of this magic eye tubes too. Here`s a link to a great page that shows You EVERYTHING in detail about how to build Your own VU (even accurate) with magic eyes tubes: http://www.megabaud.fi/~jtolonen/ga/...r/peakmtr.html There are tubes for stereo application also (EMM801/803) but they are hard to find and expensive. __________________ Christoph *STEAL the BEST - INVENT the REST*

19th October 2005, 08:39 PM	#7
kathodyne diyAudio Member Join Date: Feb 2005 Location: leeuwarden, netherlands	have a look at : http://www.aha.nl/tubelevel.aspx __________________ emission over emittor

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25th July 2002, 12:40 AM	#2
SHiFTY diyAudio Member Join Date: Jul 2002 Location: New Zealand	Our family used to have an old valve reel-to-reel tape recorder that got thrown out (!#$!@$) which had a magic eye level meter... It was really nice... Glowed bright green. You could just use one of these, just connect it up to only one channel. I mean, it doesnt really need to be accurate right! Usually channels are roughly the same level anyway.

26th July 2002, 11:42 AM	#4
Gumboots diyAudio Member Join Date: Apr 2002	If you want stereo, magic eye tubes are usually pretty easy to find. Just look through any comprehensive stockist of NOS tubes. I see them all the time.

3rd December 2002, 10:34 PM	#5
vacuumhead diyAudio Member Join Date: Jul 2002 Location: South Africa	I made some. Used 0.1uF cap and Ge diode in series from speaker into 1M trimmer, whose slider goes to grid of EM. It works fast, interesting...

19th October 2005, 07:01 PM	#6
mbates14 diyAudio Member Join Date: Jun 2002 Location: non	like SS circuits, you could use an RC time constant, to make a slower fall time.

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