6SL7 operating point in FCUPS 300b amp - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > DIY HiFi Supply

DIY HiFi Supply Parts and Kits from Diy HiFi Supply

Reply
 
Thread Tools Search this Thread
Old 28th March 2011, 08:06 PM   #1
diyAudio Member
 
Join Date: Jul 2004
Location: Minnesota
Default 6SL7 operating point in FCUPS 300b amp

Hi, in your FCUPS literature, you are using a paralleled triode section 6SL7 capacitor coupled to a 300b. There is a CCS on the anode, with about 365 VDC into the CCS.

What is the operating point you were using in this amp for the 6sl7? Do you adjust the CCS until the anode output is where you want it, or is it best to set via the current sensing resistor to about 4.4 mA?

Thanks,
Matt
  Reply With Quote
Old 29th March 2011, 10:04 AM   #2
diyAudio Member
 
Join Date: Jul 2004
Location: Minnesota
found the answer, thanks!
  Reply With Quote
Old 29th March 2011, 05:22 PM   #3
Previously: Kuei Yang Wang
 
Join Date: Nov 2002
Hi,

Quote:
Originally Posted by mattattnet View Post
Hi, in your FCUPS literature, you are using a paralleled triode section 6SL7 capacitor coupled to a 300b. There is a CCS on the anode, with about 365 VDC into the CCS.

What is the operating point you were using in this amp for the 6sl7? Do you adjust the CCS until the anode output is where you want it, or is it best to set via the current sensing resistor to about 4.4 mA?
I would set this for around 160V - 250V on the anode (maybe start at 180V).

The different operating levels will sounds a little different, so you can see which sound you like best.

Ciao T
  Reply With Quote
Old 30th March 2011, 12:21 AM   #4
diyAudio Member
 
Join Date: Jul 2004
Location: Minnesota
thanks!
  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
300B preamp - best operating point mkollmaier Tubes / Valves 8 20th September 2010 08:14 PM
Operating point for 6GK5 AKSA Tubes / Valves 6 6th October 2008 03:21 PM
SE amp: Please suggest a better operating point zobsky Tubes / Valves 34 21st September 2008 12:00 AM
6SL7 EL34 300B amp MartinV56 Tubes / Valves 2 1st October 2007 06:21 PM
Best Operating point for a 2A3? sgerus Tubes / Valves 10 2nd August 2006 12:31 AM


New To Site? Need Help?

All times are GMT. The time now is 10:48 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