6e2 Magic eye datasheet - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 27th June 2005, 04:30 AM   #1
diyAudio Member
 
Silver Stealth's Avatar
 
Join Date: May 2002
Location: Melbourne, Down Under
Default 6e2 Magic eye datasheet

Hi

Does anyone have a data sheet for a 6e2 aka Magic Eye tube? I'm trying to work out how to increase the visual dynamic range of the magic eye tube on this 6H30 preamp I recently purchased off ebay from HK. It's wired in like a "VU Meter" so the bars dance around as the music plays - way cool!

At steady state (no input signal) the bars are already 50% lit up.

I've looked for a data sheet at the usual suspects (Duncan Amps, Google etc) with no avail.

I have the schematic but it was too big to attach here - if anyone wants a copy just PM me.

Great sounding preamp by the way (buckets of drive and dynamics) and inexpensive to make. Board off ebay was about $100US delivered. Transformer and stepped attenuator added about another $150US and I have current recycled an old box for the chassis
__________________
Cheers!
Kendrick
  Reply With Quote
Old 27th June 2005, 08:49 AM   #2
diyAudio Member
 
Join Date: Jan 2005
Location: Lisboa
Could it be a 6E5 instead?
  Reply With Quote
Old 27th June 2005, 09:02 AM   #3
diyAudio Member
 
Silver Stealth's Avatar
 
Join Date: May 2002
Location: Melbourne, Down Under
Hi

It may well be like it, but both the ad and the circuit diagram show it as a 6e2....good thought though!
__________________
Cheers!
Kendrick
  Reply With Quote
Old 27th June 2005, 12:23 PM   #4
diyAudio Member
 
Join Date: Jan 2005
Location: Lisboa
I say this because running 6E2 through Duncan's TDSL, it shows a pentode.

This is a neat tube, i have one i hooked up once.
Let me check a link and i'll post there, ok?
  Reply With Quote
Old 27th June 2005, 12:58 PM   #5
diyAudio Member
 
Join Date: Jan 2005
Location: Lisboa
http://web.telia.com/~u87127078/eyes/index.htm

http://web.telia.com/~u87127076/
  Reply With Quote
Old 28th June 2005, 05:55 AM   #6
diyAudio Member
 
Silver Stealth's Avatar
 
Join Date: May 2002
Location: Melbourne, Down Under
Thanks for the very useful links - I never realised there was such a variety!

My 6e2 looks quite similar to the EM840 type having the two vertical bars one above the other.

Is it normal to have the bars 50% lit with no signal? I would have thought not.
__________________
Cheers!
Kendrick
  Reply With Quote
Old 17th November 2005, 01:41 PM   #7
diyAudio Member
 
Andypairo's Avatar
 
Join Date: Sep 2002
Location: near Milano , Italy
Quote:
Originally posted by Silver Stealth
Thanks for the very useful links - I never realised there was such a variety!

My 6e2 looks quite similar to the EM840 type having the two vertical bars one above the other.

Is it normal to have the bars 50% lit with no signal? I would have thought not.

If you are talking about Lite Audio LS32 I have the same preamp and it behaves the same way.
Do you find that the tubes tend to be microphonic? Mine are Sovtek 6H30 .... and seem to be terribly microphonic.

Cheers

Andrea
__________________
I don't believe in audiophile components - except when I can get them at frugal-phile(tm) prices
  Reply With Quote
Old 20th November 2005, 08:27 AM   #8
diyAudio Member
 
Andypairo's Avatar
 
Join Date: Sep 2002
Location: near Milano , Italy
Here is the schematic:

I'm also a bit dubious about the output cap, that seems quite small...

Cheers

Andrea
Attached Images
File Type: gif ls32-small.gif (80.2 KB, 554 views)
__________________
I don't believe in audiophile components - except when I can get them at frugal-phile(tm) prices
  Reply With Quote
Old 20th November 2005, 08:35 AM   #9
bigbulb is offline bigbulb  Canada
diyAudio Member
 
Join Date: Aug 2004
Location: klamazoo
Hi,

The 6E2 is much closed to EM87 and EM84 in its characteristic.
Here's another level indicator using 6E2:

http://www.audiohobbyist.com/projects/magiceye.htm


Regards,
BigBulb
  Reply With Quote
Old 28th November 2005, 12:47 AM   #10
diyAudio Member
 
Join Date: Apr 2004
Location: Wisconsin
Two questions on this preamp. How big should the caps be for the output? Also can the gain be lowered easily?
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Magic Gu15 VanguardVillage Tubes / Valves 7 18th June 2014 03:09 PM
The Magic of a Name 7N7 Tubes / Valves 9 1st December 2007 05:58 PM
Naim magic box ash_dac Everything Else 2 17th July 2006 12:30 PM
Magic Capacitor tenderland Solid State 23 22nd June 2006 07:39 PM
TAD - the magic drivers? amo Multi-Way 4 12th May 2004 04:49 AM


New To Site? Need Help?

All times are GMT. The time now is 03:54 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2