ECC33, 34, 35 tubes? - Page 3 - 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 29th June 2005, 09:41 PM   #21
diyAudio Member
 
Miles Prower's Avatar
 
Join Date: May 2005
Location: USA
Blog Entries: 6
It doesn't look that way to me. EC8010 was comparing an ECC82 to the 6SN7, claiming that the ECC82 had less distortion since the 6SN7 was designed for use in multivibrator type circuits. That's certainly the case, in that 6SN7's appear quite often as time base oscillators in o'scopes and TV sets.
__________________
There are no foxes in atheistholes
www.dolphin-hsl.com
  Reply With Quote
Old 29th June 2005, 09:55 PM   #22
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
It's probably past his bedtime (he's rather old and feeble) so he won't comment until tomorrow, but believe me, EC meant it exactly the way I said it.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 30th June 2005, 12:31 AM   #23
diyAudio Member
 
audiousername's Avatar
 
Join Date: Jul 2004
Location: Melbourne, Victoria
If you're on the lookout for noval 6SN7 replacements, the 6CG7 or 6FQ7 are much closer, electrically speaking, to the 6SN7 than ECC82/12AU7.

A quick look at the curves for both, and it's apparent that the 6SN7 has a much more constant than the ECC82/12AU7.
__________________
Jason
  Reply With Quote
Old 30th June 2005, 02:38 AM   #24
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by audiousername
If you're on the lookout for noval 6SN7 replacements, the 6CG7 or 6FQ7 are much closer, electrically speaking, to the 6SN7 than ECC82/12AU7.
I gave Chris some 6FQ7 to try instead of 'AU7 in his ForePlay... he liked. Now i have to dig some out for Don to try in his grounded grid....

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 30th June 2005, 07:19 AM   #25
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
Quote:
Originally posted by fdegrove
Hi,



A substitute? For what exactly?

Cheers,

Hi

Well, it is not a "true" substitue, but so far every ECC82 I pulled out replaced by E80CC worked fine. And the distortion is much lower.

cheers
__________________
Guido Tent
www.Tentlabs.com
  Reply With Quote
Old 30th June 2005, 12:40 PM   #26
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
 
EC8010's Avatar
 
Join Date: Jan 2003
Location: Near London. UK
Quote:
Originally posted by Miles Prower
It doesn't look that way to me. EC8010 was comparing an ECC82 to the 6SN7, claiming that the ECC82 had less distortion since the 6SN7 was designed for use in multivibrator type circuits.
I obviously wasn't as clear as I should have been. The 6SN7 is the low distortion valve, and the ECC82 the high distortion one.

SY: "Old and feeble?" (Waves walking stick angrily.) Step outside and say that!
__________________
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
  Reply With Quote
Old 30th June 2005, 01:11 PM   #27
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
Nurse said that you are not to be disturbed until after your nap.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 30th June 2005, 04:39 PM   #28
diyAudio Member
 
Miles Prower's Avatar
 
Join Date: May 2005
Location: USA
Blog Entries: 6
I obviously wasn't as clear as I should have been. The 6SN7 is the low distortion valve, and the ECC82 the high distortion one.

I knew that already. That's why I thought the comment so peculiar. I have a box full of ECC82/12AU7A's, and considered it for a design I'm doing. However, the THD estimates were consistantly horrible. So I gave up on that. So those will have to go on collecting dust.

6SN7's gave much better predicted results. (As did 6SL7's). Also these have a nice "retro" aesthetic that works well with the 807s that I'm using for finals.
__________________
There are no foxes in atheistholes
www.dolphin-hsl.com
  Reply With Quote
Old 30th June 2005, 06:04 PM   #29
ilimzn is offline ilimzn  Croatia
diyAudio Member
 
Join Date: Feb 2005
Location: Zagreb
I only have limited experience with ECC 82 but for me they only worked OK as a follower, and I've seen designs where they were apparently fine for concertina phase splitters.
Someone mentioned the 6CG7 and 6FQ7 which are indeed much closer to the 6SN7, but they are often referred to as the same tube, though in actuality they are not - the similarity is however close enough for them to be almost always interchangeable. I do have one 6CG7 datasheet which claims that apart from it being noval, it is an electrical equivalent for the 6SN7. I don't think there is an noval ECC equivalent to the 6SN7 which is great shame

Regarding the ECC32 and 35, 6SN7 and 6SL7 are almost always mentioned as equivalents.
  Reply With Quote
Old 30th June 2005, 08:32 PM   #30
diyAudio Member
 
Miles Prower's Avatar
 
Join Date: May 2005
Location: USA
Blog Entries: 6
I only have limited experience with ECC 82 but for me they only worked OK as a follower, and I've seen designs where they were apparently fine for concertina phase splitters.

I've seen them mainly in RF applications: oscillator/buffer stages, push-pull RF class C drivers/frequency multipliers/singly balanced mixers/modulators/product detectors. Other uses include quasi-digital functions such as Schmitt Triggers, astable multivibrators, monostables, or R-S latches. They do have the dissipation rating for this.

Of course, harmonic distortion is not a problem in such uses.
__________________
There are no foxes in atheistholes
www.dolphin-hsl.com
  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
Tube Noob! need help with tubes lots of tubes therapy_fan Tubes / Valves 15 29th January 2009 09:01 PM
WTT: Various tubes for 6CA4/EZ81 rectifier tubes GordonW Swap Meet 4 27th August 2008 12:37 AM
Tubes! Geek Swap Meet 4 16th May 2008 06:20 PM
CV428 tubes (Loktal 807) tubes FS mobyd Swap Meet 3 2nd January 2008 11:26 AM
many new tubes and tubes meter for sale elviukai Swap Meet 4 30th October 2003 09:22 AM


New To Site? Need Help?

All times are GMT. The time now is 10:58 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