UP dumble for sale

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jelle
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Re: UP dumble for sale

Post by jelle »

Heh, Aaron. I do amps full time. Off the bench, out of my working memory!

The Hotel Hog does not have a presence control. The Presence cap is hard wired in.

That pot on the front is a Master Volume. 1M-A works well there. that 50K RA pot needed to move.... move over Rover!

jelle

www.welagen.com
Aaron
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Re: UP dumble for sale

Post by Aaron »

Looks more like a master volume for the Vibrato channel only?
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jelle
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Re: UP dumble for sale

Post by jelle »

Yes, the 220K mixer resistor is lifted from the board on one end.
Smokebreak
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Re: UP dumble for sale

Post by Smokebreak »

Yup, I think that's it . The MV is before the BMish channel's 220K mixer, in parallel with the trem pot in question. I'm gonna move mine there and see what sort of difference it makes. I imagine it could be incredibly useful this way when using and a/b to switch...
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jelle
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Re: UP dumble for sale

Post by jelle »

It is like this:

Have fun!
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Aaron
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Re: UP dumble for sale

Post by Aaron »

Exactly like that.
Nice drawing by the way.
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dorrisant
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Re: UP dumble for sale

Post by dorrisant »

Can you tell me how you know that is correct?
"Education is what you're left with after you have forgotten what you have learned" - Enzo
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sonicmojo
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Re: UP dumble for sale

Post by sonicmojo »

jelle wrote:It is like this:

Have fun!
Thanks for sharing Jelle! I think I have an extra relay transformer laying around and a donor silverface in need of fixing up so I may have to try this....
---------
Bryan
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martin manning
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Re: UP dumble for sale

Post by martin manning »

Yes, very nice, thanks Jelle!
Aaron
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Re: UP dumble for sale

Post by Aaron »

dorrisant wrote:Can you tell me how you know that is correct?
Obviously the layout is for a Twin, but if you omit the Mid on the normal channel it matches the pic.
Seems a waist to use the relay to switch the reverb, it would sound nice used as a PAB.
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mhartman
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Re: UP dumble for sale

Post by mhartman »

I've peeked inside Brandon's Bludophonix and built one myself out of an old Super Reverb a few years ago. This looks very similar. I'd have to check my notes to see if exact.

FYI: https://youtu.be/HgrKrhRPSBY
dcribbs1412
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Re: UP dumble for sale

Post by dcribbs1412 »

Thanks Jelle!
Very much appreciate your work.

D
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dorrisant
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Re: UP dumble for sale

Post by dorrisant »

Jelle, sorry for sounding rude earlier... Thank you very much!

mhartman, are you saying you built a UP? Or a Hotel Hog?
"Education is what you're left with after you have forgotten what you have learned" - Enzo
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martin manning
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Re: UP dumble for sale

Post by martin manning »

Seems like there ought to be a sticky in the files section to collect D circuit mods. Can anybody do that anymore?
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ToneMerc
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Re: UP dumble for sale

Post by ToneMerc »

Aaron wrote:
dorrisant wrote:Can you tell me how you know that is correct?
Obviously the layout is for a Twin, but if you omit the Mid on the normal channel it matches the pic.
Seems a waist to use the relay to switch the reverb, it would sound nice used as a PAB.
Add the PAB relay and change some plate values and you are in UP territory.

TM
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