Need comments on schematic

[rutledj]

Here is an idea I've been working on. It is basically a Fender Blues Deluxe amp with some mods. I added a tube reverb ckt where the original had opamps so I'm not sure I've implemented everything correctly.

Any feedback would be appreciated.

Also, here is a link to the original print

http://www.blueguitar.org/new/schem/fen ... deluxe.gif

Thanks,
Rut

[roberto]

Hi Rut,
V1B lacks of cathode biasing resistor.
The point in which you put reverb is a classical fender, it should work!

[Bob-I]

I don't see a coupling cap before the dwell control. Typically Fender uses a 500pF cap in this location. It will most likely be fine without it, but the reverb may be a tad muddy.

[Andy Le Blanc]

i would also like to see a 500p cap feeding the driver
ive played with it some and without the cap or with a value that is too large
there can be significant stability issues... low frequency occilation through the
tank....just be aware of it
theres a couple more options to explore too
you can play with the tube type of the recovery... the fender circuit was always a bit much....
try a lower gain tube 12ay7... 12au7...etc...
and if you drop the 2.2M mix and use two masters ...one for straight
and one for verb you can dial in some killer surf

[Andy Le Blanc]

at V1b
you can use a zero bias configuration here by grounding the cathode
but youll have to insert a good sized cap .02 maybe.. between the volume pot. and grid... and a large value resistor say 2.2 M to 15M from the grid to ground to create bias. ... over driving one of these sounds good until it is completely overwhelmd and goes into shut off.....

[rutledj]

Thanks for the feedback.