The new dumble modded bassman build video series... begins!

[pompeiisneaks]

Here's the intro:



~Phil

[Guy77]

Looking forward to seeing this come together!
Bassman and an Overdrive Special coming together should sound amazing!

Cheers
G

[fred.violleau]

Exited here to ! Keep'em comin'!

Fred.

[Charlie Wilson]

Cool Phil, a couple things. The PI resistor after the 470 ohm should be 10k. Also, my guess is that the Dumble amp used 6L6 power tubes.
CW

[pompeiisneaks]

So you're saying a 10k instead of the 22k listed? Will update.

I'm fine with it being 6L6, I was guessing since he usually doesn't replace but reuses those old fender iron that it was likely it was 6L6 too but the schematic I took it from I thought said EL34? Or maybe I just couldn't find a 6L6 in the KiCAD symbols? I don't recall now, I'll see if I can update that.

In talking with Jelle, I think I hve the 'bright' cap done wrong on the schematic, but I put it right on the layout with a switchable bright. I've got it as a shunt instead on the schematic so I'll fix those.

~Phil

[pompeiisneaks]

Next video A quick update on the build progress...

[professormudd]

Those are some big-assed caps.

[pompeiisneaks]

A few progress photos from tonights work... of course I ran out of eyelets, need literally 8 more lol.

PXL_20201124_043355427.jpg

PXL_20201124_052458468.jpg

~Phil

[ijedouglas]

A few progress photos from tonights work... of course I ran out of eyelets, need literally 8 more lol.

PXL_20201124_043355427.jpg
PXL_20201124_052458468.jpg

~Phil

I can post you some if you need?

[pompeiisneaks]

I've already ordered more from mouser. They'll be here in a few days, thanks for the offer though!

~Phil

[oj]

If u put your tone caps direct on the pots, u will get space for your power caps direct on the board

[pompeiisneaks]

It's all good, I'm going to buy a custom sized chassis that will be pretty big so I have tons of room. I've got fumblefingers so I want bigger/more room

~Phil

[pompeiisneaks]

The next step in the process...

~Phil

[pompeiisneaks]

Ok question. Do these look like the right transformers for a 100w Bassman build?

https://www.cedist.com/products/transfo ... 5-v-200-ma
Or should I go for their Hammond P-T290YX found here: https://www.cedist.com/products/transfo ... nder-120-v
and for output: https://www.cedist.com/products/transfo ... ent-fender the P-T1760W?
and finally choke:
https://www.cedist.com/products/choke-h ... howman-etc

?

~Phil

[Lothy]

I'm really excited about how those caps gonna work!

Ok question. Do these look like the right transformers for a 100w Bassman build?

https://www.cedist.com/products/transfo ... 5-v-200-ma
Or should I go for their Hammond P-T290YX found here: https://www.cedist.com/products/transfo ... nder-120-v
and for output: https://www.cedist.com/products/transfo ... ent-fender the P-T1760W?
and finally choke:
https://www.cedist.com/products/choke-h ... howman-etc

?

~Phil

4A filament current looks a bit low to me on. Especially if you want to use EL34s instead of 6L6 you might be screwed...
Cheers
Gerhard