Hi…
I have been fiddling around with an Altec 436C p2p home-brew for a while and the original schematic calls for tubes that require 6,3V for the heaters…
I would like to test with other tubes… preferably with ones that can take 12,6VDC for the heaters (for various reasons) but then the diode tube 6AL5 would need a significant voltage drop causing a lot of heat in the resistors…
And I came up with an idea to use diodes instead of the 6AL5, but I cannot seem to find any schematic where it is used and there might be a very good reason for that.
So my question is if it would be doable to use a pair of diodes instead of the 6AL5 in the side chain? Or am I swimming in deep water here?
ps. the manual is attached and the schematic is on the last page
Best regards
/John
I have been fiddling around with an Altec 436C p2p home-brew for a while and the original schematic calls for tubes that require 6,3V for the heaters…
I would like to test with other tubes… preferably with ones that can take 12,6VDC for the heaters (for various reasons) but then the diode tube 6AL5 would need a significant voltage drop causing a lot of heat in the resistors…
And I came up with an idea to use diodes instead of the 6AL5, but I cannot seem to find any schematic where it is used and there might be a very good reason for that.
So my question is if it would be doable to use a pair of diodes instead of the 6AL5 in the side chain? Or am I swimming in deep water here?
ps. the manual is attached and the schematic is on the last page
Best regards
/John