Welcome, Guest. Please login or register.
May 16, 2021, 11:08:05 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.



  Show Posts
Pages: [1]
1  American Style / PrinzeTone / how to set bias on Prinzetone - Noob question on: May 17, 2018, 07:22:30 AM
Hi,

I purchased a Prinzetone fully assembled by Ceriatone so I haven't built it myself or ventured inside the chassis.  I have a bias probe from Hoffman Amps that allows me to measure the current flowing through the power tubes on pin 8 (cathode).

The tubes are JJ 6V6S which I believe are 14W.  The 'VoltageChart' Excel document on the Ceriatone website says that pin 3 (plate) on the Prinztone power tubes is 391V.

Now, from what I can see, the calculation goes something like this:

(Wattage / Plate Voltage) x 0.7 = desirable current, therefore

14 / 391 x 0.7 = 25mA

Can anyone confirm if I'm working this out correctly, or advise if not.

Many thanks.
Pages: [1]


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.