Contour switch for Vox/Marshall 18 Watt Project

[shawaudio]

Greetings.I am new to the forum, but have recently gotten back into amp building after a 15 year break. I am focusing my efforts on the 18 watters as EL84's have always been my favorites. I am looking for some info (preferably a schematic) of the 6 position contour switch used on many Vox type clones. I want to add this to my current 18 watter with EF806 based preamp. Can anyone help? Thanks.

[redtoploader]

What type of info do you seek? I believe this control just switches the coupling cap value off of the ef86 plate. Vox used it with the ac30/4 but it was only 2 positions...and Orange used it on their amps, the F.A.C. control....but they did it a bit differently I think.

I would actually like to know from people who have built this control in their amps, whats a good quality 4-pos switch for this?

[dartanion]

Download the DC30 layout from Ceriatone as this has that whole channel on board.

ceriatone.com

[shawaudio]

Thanks for the Ceriatone tip. I stumbled onto that layout today. I was really hoping for the schematic, but it seems to be scarce. I will decode it from the layout.