boobtube twin revisited

[GrindCustoms]

It's the only gain stage. the 12AU7 is being used as a pair of cathode followers.

Oh! sorry

[Thomas_H]

This is an interesting step you are taking here.
I am a little lost with the 1W/2W 10k dimension between Va and Vb.
Is this for safety or how much current do you expect the plates to eat?

[juansolo]

Cleggy will have the definitive answer to that one as it's very likely I'm about to be wrong I think it is to essentially decouple the tubes as it's not recommended to have them running on the same feed...

The plates pull very little current which is why we can get away with 190V from 9V. The major current draw is the heaters.

[marauder]

On a JCM800 that resistor is a 2W one, all the others are 1/2W.  Not sure why, but just be safe I used a higher rated one than normal.  A 1/4W would probably work, but the cost of a few pennies, it's not worth risking.

All the other resistors are 1/4W on the pedal.  I think they are 1/2W as they can also take more voltage, 1/4W can typically take 250V according to the specs, and the real amp would be well over 250V at some points.

We played it through the loop return on my Laney today, it's pretty amazing, and very quiet for a highish gain pedal.  It seems the internal layout is good for noise, and I've got an idea for another one after the revisited baby boobtube.

[Thomas_H]

Thanks for letting me know!

[alanp]

It's also usually a flameproof metal oxide resistor.

[GrindCustoms]

I've got an idea for another one after the revisited baby boobtube.

I don't know what you have in mind, but a Tube Trem or Comp....would be killer!

[juansolo]

Something orange...

anyhow here's a pic of the outside as I had the camera out:

[brejna]

I've seen all those tube pedals that you've build and it would be plesure to watch video of them   

[GrindCustoms]

I've seen all those tube pedals that you've build and it would be plesure to watch video of them   

Today i was thinking of pumping out couple Demo's... i have the BabyBoobTube and BoobTube here... running them directly into the effect return of the amp... it's simply delicious!

And.... Orange.... that's a nice color!

[brejna]

Then you have to share those tasty tones with us

[sonolink]

Does anyone know why I can't see ANY of the links or pics posted on the messages please?

[sonolink]

Thanks a lot 

[juansolo]

I changed my hosting... I'll fix them, but if you go to the site they're all in tube pedals anyhow.

FWIW, removed 'demon' from the link and they will work (I'll do that now).

[nzCdog]

No more demons then?
Always been a Boobtoob kinda guy... hotness in and out, great buildin