Welcome, Guest. Please login or register.
Did you miss your activation email?
November 22, 2024, 01:16:52 PM
Home Help Search Login Register
News: Ceriatone Forums are up and running!!!
 
Guests please register
Note: If you want to help you can donate to keep the forums alive.



Do you want to advertise on this forum ? Send me a private message.

Amplified Parts
+  Ceriatone Forum
|-+  Ceriatone
| |-+  Overtone
| | |-+  Power tubes		 « previous next »
Pages: 1 2 [3] Go Down Print
Author Topic: Power tubes  (Read 30616 times)
oldpicker
Newbie
*
Offline Offline

Posts: 25


View Profile
« Reply #30 on: May 11, 2010, 06:24:51 PM »
Just curious. What is your plate voltage, Tonequest?
Logged
oldpicker
Newbie
*
Offline Offline

Posts: 25


View Profile
« Reply #31 on: May 11, 2010, 08:54:15 PM »
Measure between pin 3 and pin 8 to get actual voltage I think. Can others verify?
Link to bias calculator and charts:   http://www.webervst.com/tubes1/calcbias.htm 
Logged
oldpicker
Newbie
*
Offline Offline

Posts: 25


View Profile
« Reply #32 on: May 12, 2010, 04:08:23 PM »
Tonequest,
   You just need a good multimeter and be very carful what you touch. Very lethal voltages inside of these amps due to the capacitors.  Here is a link that will explain step by step. Look under fixed bias.

http://www.diyguitarist.com/GuitarAmps/PT-Biasing.htm
Logged
Emiel
Guest
« Reply #33 on: November 30, 2010, 07:14:54 PM »
I just replaced the SED Winged C EL34's in my OTS with TAD 6L6WGC-STR. Biased them around 39-40 mA.

First impressions: improvement! The 6L6's give a more compressed feel, less in-your-face. A bit darker and thicker as well. This is at a low volume level though. I really think EL34's need some proper (stage) volume to get the best out of it. At low levels it can sound a bit thin and bright. At these conditions I get a more pleasing sound with the 6L6's. Can't wait to turn it up more.
Logged
212Mavguy
Full Member
***
Offline Offline

Posts: 142


View Profile
« Reply #34 on: December 15, 2010, 12:35:30 AM »
Winged C el34's tend to be a bit on the bright side anyway.  I know that their 6l6gc's also can also be pretty bright for a 6l6 type.  A slight adjustment to the hotter side of biasing can help in both instances. 

I've been busy on fleabay stocking up on VOS power tubes for my incoming 50w HRM head, a pair of GE 6l6gc's, a pair of what appear to be early Sylvania (Conn labeled) 6l6gc's, a slightly used pair of TAD 6l6wgc's, and a couple pairs of Siemens el34's.  Starting to Jones a bit... Wink       
Logged
JD0x0
Sr. Member
****
Offline Offline

Gender: Male
Posts: 298


Happy Hour Hero


View Profile
« Reply #35 on: December 15, 2010, 09:39:06 PM »
Currently running Shuguang KT88's @ 64mA. Huge improvement over both the JJ 6L6's and Winged C, Shugaung EL34's
Logged
It's true i've lost my marbles and i can't remember where i put them.
bluesfendermanblues
Sr. Member
****
Offline Offline

Gender: Male
Posts: 452



View Profile
« Reply #36 on: December 15, 2010, 11:15:15 PM »
Quote from: JD0x0 on December 15, 2010, 09:39:06 PM
Currently running Shuguang KT88's @ 64mA. Huge improvement over both the JJ 6L6's and Winged C, Shugaung EL34's

in terms of dynamic range ? warmer midrange or ?
Logged
Respect for the big guy's work....we're at this part of the forum because of HAD's amps.
JD0x0
Sr. Member
****
Offline Offline

Gender: Male
Posts: 298


Happy Hour Hero


View Profile
« Reply #37 on: December 16, 2010, 05:09:32 AM »
huge midrange and bass with present highs. Overall pretty balanced, no harshness, full sounding.

I'll try to get a soundclip up asap.
Logged
It's true i've lost my marbles and i can't remember where i put them.
Pages: 1 2 [3] Go Up Print 
« previous next »
Jump to:  


Login with username, password and session length

Powered by MySQL Powered by PHP Powered by SMF 1.1.12 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!

CeriaTone Forum is not afiliated with Ceriatone Amplifications. The CeriaTone and name, logo and related trademarks and service marks, owned by CeriaTone. , are registered and/or used in the U.S. and many foreign countries. All other trademarks, service marks, and trade names referenced in this site are the property of their respective owners.