Add reverb to a Bassman

[Lynxtrap]

I guess this has been dealt with before, but I can't find much information about it.
If I was to build a 5f6a/JTM45 type of amp from scratch, where would I insert a reverb circuit? Preferably a pretty much stock blackface reverb circuit, since I have parts for that.
The puzzle is of course the cathode follower and the tonestack placement. Is it even possible to insert a blackface reverb circuit somewhere?

[M Fowler]

Hoffman forum has this schematic

[Lynxtrap]

Great, thanks! My next question was how to add tremolo to it
At first glance, it doesn't look exactly like a typical Fender reverb, but I won't say any more until I've studied it closely.

[10thTx]

I have used that type of one tube reverb on amps numerous times and really like it. I actually prefer it over the Fender reverbs because this allows a few more mids to be verbed which gives it a better tone to my ears. Not saying it's better just that I prefer it.

That type of one tube reverb isn't going to do the surf stuff for you if that's what you're looking for.

I find the dwell pot to be important doing this and usually have the dwell on about "7" & the reverb pot typically around "3-4" which gives me all the reverb that I personally want.

The one tube reverb idea came from the dumblish clone guys.

Just an FYI. With respect, 10thtx

[ChrisM]

I have used that type of one tube reverb on amps numerous times and really like it. I actually prefer it over the Fender reverbs because this allows a few more mids to be verbed which gives it a better tone to my ears. Not saying it's better just that I prefer it.

That type of one tube reverb isn't going to do the surf stuff for you if that's what you're looking for.

I find the dwell pot to be important doing this and usually have the dwell on about "7" & the reverb pot typically around "3-4" which gives me all the reverb that I personally want.

The one tube reverb idea came from the dumblish clone guys.

Just an FYI. With respect, 10thtx

+1

I also like it because it's not over the top surf style like the BF reverb design.

[LeftyStrat]

Another candidate is the Ampeg reverb, which doesn't use a transformer.

There's a discussion and schematic about halfway through this thread:

http://ampgarage.com/forum/viewtopic.ph ... peg+reverb

[M Fowler]

http://ampgarage.com/forum/viewtopic.ph ... b&start=15

Check out Tubewell's 5b6B with reverb he has schematic and layout further down in the above post.

Mark

[M Fowler]

CAN THIS THREAD BE MOVED TO THE NEW FENDER SECTION

[Lynxtrap]

Oh, there's a Fender section now? I didn't notice.

I have a transformer and spare tubes in the (Epiphone) chassis I'm planning to use. I'm not against trying other circuits, but it would be nice if I could use the transformer and reverb tank I already have.

Will the Hoffman circuit require different impedances etc compared to traditional Fender?
The basic problem here is I don't really understand reverb circuits, as you might have guessed.

[10thTx]

Will the Hoffman circuit require different impedances etc compared to traditional Fender?

I've always used an "replacement" reverb transformer and reverb tank like one would use to build a Princeton Reverb.

tank 4AB3C1B reverb pt 022921.


With respect, 10thtx

[Structo]

CAN THIS THREAD BE MOVED TO THE NEW FENDER SECTION

Yep!

[Guest]

First topic in the new section, it's an honour. This thread will now be eternal!

[Lynxtrap]

...but it's weird that I happened not to be logged in but still able to post the above as "guest"...

[Guest]

Able to post without logging in ?
This sucks