diyAudio (
-   Tubes / Valves (
-   -   Opinions for 6550 bias. (

Farouk 30th December 2012 04:51 AM

Opinions for 6550 bias.
Are there any recomendations for cathode bias in push pull amp with two 6550 per chanell?
I'm using G.E.
Happy new year to all!!!

Vincent77 30th December 2012 08:44 AM

Yeah, each 6550 should have its own decoupled cathode resistor, do not share one R between two tubes.

Farouk 30th December 2012 11:20 AM

ok,i won't share one R with two cathodes,but could you help me with the bias adjustment?

Tesla88 30th December 2012 12:56 PM

6550 plate dissipation is around 42W , you must never exceed this value , bias depends on B+ voltage and class of operation ...
Look at this Link: TDSL Tube data [6550]

Anyway i bias amps to get minimum cross-over distortion at max output power before clipping and assuring i'm not exceeding the plate dissipation rated...

All times are GMT. The time now is 08:26 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 18.75%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio