6386 replacement?
Posted:
Mon Dec 15, 2008 1:24 pmby blackfoot
Hi DIYer's, I was wondering if anyone could advise me about this device. I'm a bit dim on valve technology . It claims to be a viable alternative.
http://cgi.ebay.com.au/ws/eBayISAPI.dll ... 0281814284 .Anyone have a comment ? THANKS JB
Posted:
Mon Dec 15, 2008 7:18 pmby no-fi
that sounds like an awful lot of money for a wiring job, and two $5 tubes.
...now if only he'd say what the $5 tubes were.....
:-)
Posted:
Tue Dec 16, 2008 11:10 amby wez
you could probably just buy a manly T-Bar unit... which is where your guy probably got the idea from -
http://www.manleylabs.com/techpage/TBAR.html
this uses a pair of 12BA6 tubes. costs $150 US.
it's obviously designed to replace the 6386 in the original vari-mu... however i don't see why it wouldn't work as a generic device?
Posted:
Tue Dec 16, 2008 9:05 pmby rob
use of a pair of 6BA6 tubes wired as triodes gives a very good substitute for a 6386. However the heater current is nearly doubled. It's not clear what tubes this dude is using....and you'd think he'd say.
however
http://www.jj-electronic.com/index.php?option=com_content&task=view&id=10&Itemid=4
could be the way to go
Rob