Crossover part please

[donegone]

For a Shure Vocal Master VA 100 (6 ch. input. 100w output). I am having troubles finding the schematic. The part numbers on the transistors are:

6812 86A332-D (x3)
6814 86A331 (x1)

I also have drivers I am looking for:

6808 sdt9276
6807 86A332-D

The output transistors have one transistor that doesnt match the others but since I cannot find a cross reference I cannot say if it is correct or not. If anyone has a schematic or knows where I can obtain one please let me know.

[tedmich]

I can only find VA 300-305, was there really a V100?

Maybe those schematics will help. they have full component listings, try a an advanced google search for acrobat (.pdf) files at this site:

http://shure.com/stellent/groups/pub.../web_resource/

[Enzo]

All those 68xx numbers are just date codes - the parts were all made in 1968. They are not part of the part numbers.


86A332 were 2N3773, though today, I'd probably use some MJ15003 or MJ15024 from my drawers.

The thing is with these old solid state things is that just about any transistor will work just fine, as long as the basic specs are covered. Yopu want some drivers for the TO3s? I'd try something like an MJE1503x series.