substitution for a 7868 ?

[Andy Le Blanc]

Is there a good sub for a 7868, with a socket change?

[KT66]

The data sheets show 7591A as a virtually identical octal tube. 6L6GC has the same 6.6K load, a few watts higher output, .1 amps more heater current, and a 500 max plate voltage ( 50 less than 7868).

I have an old Bogen W/ a quad of 7868s in my bone pile I am planning on making into a 2X EL34 because it will have roughly the right load (3.3K) and enough heater current ( 4X 7868 = 3.2 Amps, 2 X EL34 = 3 Amps).

[Andy Le Blanc]

Thank you much I was having no luck.

[Blindog]

double

[Blindog]

Hey Andy,

Just FYI, you can get new 7868's from EH. I had some modding fun with an old Bogen PA that had an original pair in it. They sounded quite good.

http://www.tubedepot.com/eh-7868.html

A bit pricey though.

Mark

[Andy Le Blanc]

$$$..... I've got this ampeg that needs to be turned around. I Want to keep
it as is, but the options have to be explored. Its cheaper to convert.
But you have to balance your choices with vintage pieces.