|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
|
|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
In Reply to: RE: Dynaco ST70 modification to use KT66 posted by tudo99@yahoo.com on May 29, 2024 at 18:29:43:
please remember that the KT 66 is a VERY different tube from an EL-34
Yes, they are both Octal based Pentodes, Power tubes -
but electrically there are some important differences:
1: the KT 66/6L6GC has the G3 tied to the Cathode on pin 8. Not so in the EL-34
2: yes the rest of the pinouts are the same
3: the max plate voltage is different:[Class A amp PP] KT-66/6L6GC= 270; ERL-34= 800
While the two tubes both fit and will operate, for a while, the ST-70 was designed for EL-34 output tubes and has voltages, bias, grid settings to reflect that - considerably above the design specs for the KT-66/6L6GC...
Happy Listening
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Dynaco ST70 modification to use KT66 - 6bq5 21:59:44 05/30/24 (1)
- RE: Dynaco ST70 modification to use KT66 - Triode_Kingdom 08:47:25 05/31/24 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
