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12.10.199.12
In Reply to: RE: The great Will Vincent... posted by Crazy Dave on June 16, 2015 at 09:11:46
Maybe the tubes are Sovtek 6B4Gs. "Uncle" Ned Carlson has a mod for Dyna ST70s that allows for alternate use of EL34 class multi-grid types and, specifically, Sovtek 6B4Gs. NOS 6B4Gs will not survive under the conditions found in a Dyna ST70.
Eli D.
Follow Ups:
Could be!
Dave
must have squeezed a couple of 2.5v fils trans in there somewhere and really tweaked the circuit. maybe a choke input filter to bring the B+ down?
!
The Mind has No Firewall~ U.S. Army War College.
A 5R4, instead of a 5AR4, will bring the B+ rail voltage down too. At the max. 250 mA. draw, the forward drop in a 5R4 is a whopping 67 V.
Eli D.
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