Blues Deluxe Reverb

[drewl]

Stupid question time!
was the reverb on the older Blues Deluxe amps switchable?

Not sure I have the correct foot switch for it, but compared to an old schematic I have, the board in this one is not populated with the parts that switch the reverb on/off.

The board is dated 1993, #047006E
Schematic I had on file is #047003G

Can't see how the reverb can switch without fet Q2

Cant link schematic from phone, I'll do it tomorrow at work, see if I can dig up an older schematic

[Delta362]

The original one doesn't look like the reverb can be turned off, but I could definitely be wrong. Q1 looks like it's a mute function, following similar to the reissue schematic. The reissues definitely have reverb on/off controls. You can see the footswitch schematic on the reissue schematic.

[The Dude]

The schematic I have also shows Q2 FET for switching reverb, also. I'm not sure what you have there?

Edit: Simulpost.

[Delta362]

I just pulled the service manual for the 1994 version of the amp. It's a single button for channels. The reverb was not selectable on the initial release versions.

[drewl]

Thanks for the responses.
I've never had one this old.
It's got the missing parts labeled so they were in the planning stages of having it switchable

I'm sure it could be converted if you removed the U4 ground jumpers and populated the missing parts.

Just making sure I'm not crazy.....er, crazier.....

Thanks

[g1]

It's got the missing parts labeled so they were in the planning stages of having it switchable

I think they shared the board with the DeVille, which did have the reverb switchable at that time. Probably an upsell.

[Delta362]

Here's the Blues Deville schematic from that era showing the reverb control circuitry