Posted by Hennie Pitzer on May 30, 2008 at 14:47:12:
In Reply to: Re: ELK amplifier - tubes ? posted by Basshog on April 30, 2008 at 03:51:11:
Mark, you were right .It uses an el84 as a driver and 4 6ca7 output tubes. Tip: get rid of that driver tranny and use a normal phase inv.Check out the voltages on the 12ax7,s they are connected for 12v Ps had one here in South Africa
: http://www.drtube.com/schematics/elk/vkb-100.gif
: Hope that helps.
: : Hi !
: : I have an ELK amplifier (it says "Viking Bass" on front)
: : It is in very bad condition, but I want to fix it.
: : It is a strange amp, using two push-pull output transformers
: : in parallel. Secundairy windings are connected in series.
: : It has a miniature 8-pin tubesocket next to the input (for 12a..7 ?), going to a miniature 8-pin socket wired for something like a 6bq5 (derived from the connections, wired as a triode), going into an interstage tranny, into two push-pull sections each on their own output transformer, wich outputs are wired in series.....
: : output valves could be EL34's or 6l6's
: : Has anybody seen this kind of amp before and know what tubes are used ?
: : Cheers,
: : Mark