OD Deluxe dealio....

[tubedogsmith]

I've been working on this for the past couple months and finally got it where I wanted it. Rebuilt the tremolo at least 7 or 8 times and ended up with a bias modulated circuit close to a tweed lux. I'm totally stoked with the sound of this thing now. So much so I may build one into a twin chassis for myself. Anyway, here's a couple pics.

[img748]http://images.lilypix.com/albums/userpi ... 810%29.JPG[/img]

[img820]http://images.lilypix.com/albums/userpi ... hoto~0.JPG[/img]

[10thTx]

So, is this like an AB763 with an OD channel also ...... and vibrato and reverb? And if so, are you using a 1 tube reverb?

With respect, 10thtx

[Colossal]

Very nice!

[tubedogsmith]

there's not much AB763 in there. the preamp is high plate non HRM, no boost, the phase inverter is the same with the exception of a .01 PI input cap and the balancing resistors.

I ended up liking the one tube reverb best after trying a couple different things with two tubes. I ended up wiring the rock/jazz switch on front as a clean/overdrive switch as well. The clean sounds very good on this amp, especially the pushed tones. I used a Marshall style 18 watt OT on this as the Deluxe transformers sound real puny to me.

Getting this thing all worked out was a real learning experience and cause of much satisfaction when completed. the gut shot is not the totally finished amp. I moved a few things around and cleaned up after this pic but, the pic is pretty close to the final thing.

[David Root]

Looks good! Did you build it off the layout pic of an original OD Deluxe that is available, or do you have a schematic?

[10thTx]

Edited and reposted.

[tubedogsmith]

David, no, I wish I would have had an original layout to work from, it would probably have saved me about 6 weeks

10thtx, let me look at my scribbles tonight. what you've got there actually looks fairly close but a lot of the values are different. Let me check on where everything was hooked in tonight.

[trane34]

What amp? I don't see an amp. All I see are those Stevens

Looks like a mojotone chassis and faceplate? Been thinking of going the same direction for my next project. Are they pretty good quality?

[10thTx]

10thtx, let me look at my scribbles tonight. what you've got there actually looks fairly close but a lot of the values are different. Let me check on where everything was hooked in tonight.

IF you want to share your schematic and are comfortable with that, you can use "Paint" to edit the schematic ............

OR better yet use ExpressSCH (which is a free download) to edit the editable version. All you have to do is click on components to change the value. Very user friendly & very intuitive to use. You can save the SCH version to bitmap and then resave it to GIF.

http://www.expresspcb.com/expresspcbhtm ... ftware.htm

With respect, 10thtx

[tubedogsmith]

Ya, it's mojotone. Great stuff and great folks to work with. Those,Stevens are off the charts!!

Let me try and download that ExpressSCH program tomorrow and give it a shot. I'm not great at documenting stuff, anything I have is hand written or in my head. Scary thought, I know!

[10thTx]

TubeDogSmith was kind enough to provide an edited version of the previous post. This should be a fairly close representation of what he has.

I am not totally clear on the vibrato, but what is drawn should work well, IMO. He noted using a 5G9 version, so compare this to that. I probably would've used a .01 into the reverb pot instead of the .1.

The attached SCH version has the power rail and bias on it on the 2nd page. However, this was not verified but could be a reasonable starting place.

Nice of him to share his efforts for the forum community! I'd love to hear some sound clips of the amp.

With respect, 10thtx

[amplifiednation]

I'm a little late to the party... But that build looks fantastic