• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

6922 Technical info (help)

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.

Blixa

Member
2015-10-07 11:24 am
Hi everybody..
I'd like to know the output impedance of my tube preamp, using a web calculator, but i need to know Ri and gain of 6922 and for me (newbee) it's still too complicated to measure these values.
Is there anyone that have indicative values about this?
Thanks in advance guys!

Marco
 

Blixa

Member
2015-10-07 11:24 am
Hi :wave:
Sorry for delay!
Solved with your suggestion and help of a friend of mine (thanks Giancarlo!):
i found tube gain (33.13mu), Ri 2.65/2.67k and 2 resistors value, the impedance is approx 1.3k not bypassed and approx 715ohm if bypassed..

Thanks!!
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.