18w Stout & Plexi designs

[10thTx]

Doug Hoffman carries an 18w PT & OT, Hoffman style turret board and is getting some new chassis in that can be used for an 18w or a 5E3.

I drew up 8 different amps that can use these trannies, and chassis. 5 of the 8 can use the layout board also.

There are 9 pages in the editable SCH schematic attached.

There are additional SCH editable amp designs with layouts here:
http://el34world.com/Forum/index.php?topic=17585.0

There is a thread with GIF versions of it here:
http://el34world.com/Forum/index.php?topic=17583.0

With respect, 10thtx

[EL34]

Very cool
Thanks for that

The chassis is still a couple weeks off
I'll let you know when I have a sample in my hands

I have a post here with CAD drawings of the chassis in case anyone is interested.
http://el34world.com/Forum/index.php?topic=17502.0

[Stevem]

Very cool! Thanks!

[Ken Moon]

I will definitely try one of those chassis. I'm also a Mojo dealer, and this may be just what I've been looking for

Looks like you did some good collaboration over at the EL34 site to come up with the design - I just love to see these amp boards work that way!

I have an ongoing demand for 18W/Spitfire style amps, and I've been experimenting with just how light I can get a tubes-up 1x12 combo down to (goal is <25 lbs.).

And once I learned the Ruby zener trick, I been lovin' me some 18 watters!

Thanks!!!

[EL34]

I like to call these small 12 inch chassis/heads "Lunch Box amps"

There seems to be allot of people building small footprint heads these days

[vibratoking]

That's some good information. Here's some 5E3 variations on the theme that are interesting. Not drawn by me...maybe by someone here? From PPWATT and intended for their PCB, but they're schematics.

[M Fowler]

That would be a great chassis for my 5b6 cage amp if it had octal sockets and larger PT opening for at least 50w Fender type PT.

[EL34]

It is going to have octal socket holes
I plan on using block off plates for 9 pin EL84 sockets

As for the PT, I suppose since it is .09 aluminum, it could be jig sawed larger without too much trouble

The PT opening currently is 2.625 inches x 2.5 inches which is the size a Heybour 18 watt PT is.

A Super Reverb sized OT needs a 3 inch x 2.3 inch hole

[10thTx]

OK, I've added more schematics and drew or referenced corresponding layouts that will work with this small chassis and 18w PT & OT.

There is a total of 13 different designs:

http://el34world.com/Forum/index.php?board=13.0

http://el34world.com/Forum/index.php?topic=17585.0

With respect, 10thtx

[EL34]

Wow, nice work!

You have been busy!