2nd gen chassis and pcb design?

[erwin_ve]

And then there is the trademark thing.
CW

Agreed, I know "Dumble" is a trademark. "Overdrive Special" also?

Erwin

[martin manning]

I don’t think so, unless something has changed recently. ODS is, owned by Fuchs, I believe.

[VolkerStaub]

"Overdrive Special" is not a registered trademark - theoretically you could've printed it on the chassis.
Anyways, what would be a proper way to do it myself? These decals at Amazon probably will fall of quick after some time. Any hints?

[Charlie Wilson]

Yes, Overdrive Special is trademarked. As is Dumbleator and Overdrive Reverb. The trademarks are held by the Dumble estate.
CW

[dbharris]

"Overdrive Special" is not a registered trademark - theoretically you could've printed it on the chassis.
Anyways, what would be a proper way to do it myself? These decals at Amazon probably will fall of quick after some time. Any hints?

I use a vinyl cutter to make a stencil. Then brush on clear coat to prevent bleeding, once dry I roll on white or black enamel for pinstriping, 2 coats and let dry between. Does a nice job as long as you don't go too small with the font.

-Dan

[erwin_ve]

Finished the amp today, tomorrow double check and start up.

[VolkerStaub]

Great stuff Erwin! Would love to hear a demo if you're willing to record some.
Also curious what transformers you used?

[erwin_ve]

Great stuff Erwin! Would love to hear a demo if you're willing to record some.
Also curious what transformers you used?

Hi Volker,

Transformers are:
PT: Tube-town Dumb50-pt
Choke: 4H-90mA , Fender replacement
OT: Fender Bassman Replacement with only a 4 Ohm secondary. Manufacturer code indicate it is from Magnetic Components.

[erwin_ve]

Amp is alive! Really nice sounding, very much like the 2nd gen hybrid I built in the past.
Aggressive but no fuzz on lead ch. Nice chimey cleans.
Turning it a little up makes a nice sustain.
The PI is not set yet and I might rebias the Fet: not enough signal in comparison with the Nor input.
The slider switch for Rock-Jazz has that PAB hump, you can even put it in between and leave it there. I can see why customers asked for PAB on fsw, it is so obvious with these switches.
After some tube rolling the amp ended up with JJ Ecc803s on V1, Tung-Sol 12ax7 on v2, Tung-sol 12at7 on PI and Tung-sol 6L6GC-Str on powertubes.

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[beasleybodyshop]

Dig the snake skin. Excellent build!

[erwin_ve]

Dig the snake skin. Excellent build!

Thanks! The snakeskin combo used to be the housing for my 2nd gen hybrid, that amp is in a headshell now.

[dbharris]

Looks fantastic and I bet it sounds great as well! Any reason you went with a PI trimmer vs the 2nd Gens not having that function yet? I am contemplating doing the same when I get to my build.

-Dan

[erwin_ve]

Looks fantastic and I bet it sounds great as well! Any reason you went with a PI trimmer vs the 2nd Gens not having that function yet? I am contemplating doing the same when I get to my build.

-Dan

Thanks Dan,
in previous builds, when the amp start to sustain, bloom and feedback, the trimmer is making the overtones tuned, like when a guitar is out of tune and you tune it it you hear before it is almost in tune a kind of wobble. Tune it and the wobble is gone, this is exactly the same.

[erwin_ve]

Great stuff Erwin! Would love to hear a demo if you're willing to record some.
Also curious what transformers you used?

I made a small test track, clean and lead gtr are all the 2nd gen amp.


Erwin

[Guy77]

Beautiful Cabinet and chassis Erwin. Amps sounds great!

Cheers
G