Metropoulos Forum

I started this project quite a while ago to give beginners a taste of the Dumble tone without all the expense and tricky relay wiring. I was really surprised that it came as a pretty fine amp in its own right. The amp uses some cheap Deluxe iron and 6V6 power tubes. I'll try to get some clips up this weekend, but in the meantime, here are a couple of pics...

Nice ! Looking forward to your clips. What are the switches for ?

Interesting. Looks Good ! Clips coming too, huh ? Nice


Jimmie K.

Thanks! The switches are bright, overdrive, and tonestack bypass (preamp boost).

Looks great! I recently checked out some Dumble schematics but never really got around to working up a layout that didn't involve relays. Would be interested in more info and clips!

Clips will be coming soon. I dropped the amp off at a friend's house today who actually knows how to play.

Here's the layout I used for the amp:
http://thenormster.com/DumbleLite/Dumbl ... ayout3.JPG

You included that pre OD filter. No local NFB loop. Trimers on the front panel. I always shot for the Ford sound. I think the hybrid schems get close to that. I considered doing another one but I wanted to have a trimmer for everything. Even for the resistance after the OD couplers. I think it was the Dumbleland that had the voltage doubler trimmer on the panel too on concentric pots with the OD and Level knobs.

I added the local feedback after the pic was taken. Also threw the 270pF caps on V2. As for adding trimmers everywhere, I'm with you on that. I've often thought it would be a great way to tune the circuit. Maybe replace the critical values with those tiny little 10-turn rectangular trimmers.

Hi all,

My friend Greg just posted clips of the DumbleLite on TGP if anyone is interested.

http://thegearpage.net/board/showthread.php?t=188726

Another set of clips, this time NO Robben Ford impersonation.

http://www.brown-note.com/dclips/

Guitarist is Moss from brownnote amps.

Normster I really liked the sound of the amp! where can I get a schematic for a project amp with that tone? thanks bluze

Theyre great clips of D tone.

The layout for the amp is here:
http://thenormster.com/DumbleLite/

Brownnote is also offering a kit so you may want to contact him at mail@brownnote.net. He'll be starting the chassis run this week so make sure contact him before Friday.

(Hope that's not inappropriate for this forum.)

Just had a listen to those clips. Smoooooooooth !
That amp would do the Chicago scene here to a "T"

Posted pic shots of an amp that one has finished their build on is great.
To post the sound clips...Awesome !
(Soon I will have time to return this jesture)

Agian, Nice work, and playing ofcourse. I think it's Miller Time !!!


Jimmie K.

Thanks! Hmmm...I wonder what a JTM45 would sound like with 6V6's.