Professor Tweed as a mini amp ?

[Krinor]

Would it be possible to adapt the ROG Professor Tweed to become a mini amp with a speaker ala Ruby or Little Gem ?

[jakenold]

What about just sticking it infront of a Ruby? 

mfg Jake

[Krinor]

  Sure 
But I'd like to not put it in front of anything but rather let it sing through a speaker all it's own y'know. 
Could that be done somehow ?

[grolschie]

Sure 
But I'd like to not put it in front of anything but rather let it sing through a speaker all it's own y'know. 
Could that be done somehow ?

Build a Ruby into the circuit?

[Ben N]

I suppose you could redesign the third stage as a true power amp, maybe using a small power mosfet single-ended or a two transistor push-pull. However, I wouldn't begin to know how to do such a thing, nor do I know what the benefit would be.

[soulsonic]

This panda would turn the output into a JFET Deacy amp. The transformers will add a crucial aspect to the sound and definitely add even more tube-amp panda vibe.

[Ben N]

Martin, you have a Deacy schematic?

[soulsonic]

Vanessa has one.

[km-r]

who's vanessa?

[newfish]

Maybe Vanessa is a lovely Panda-Girl.

I say we leave them to their Panda-lovin' - there aren't enough Pandas left.

[soulsonic]

Wow, sometimes you guys are really unbelievably........
http://www.aronnelson.com/gallery/v/soulsonic-fx/mullardamp-deacy.gif.html

self-edited to remove lots of personal insults that were pointlessly abusive

[Threefish]

Thanks soulsonic. Now we just need to know what the audio transformers are.
Any suggestions? Or has someone the rest of that mullard book?

[soulsonic]

Those cheap junk little "42TM0xx" ones that Mouser sells and everyone uses in a variety of different stompbox panda projects are actually intended for this sort of circuit. Just find the right impedances to work with whatever transistors you choose to use.

[Steben]

I'm going to scan a schematic I found in my electronic circuit compendium of early 70ties; It's very alike.
I wonder how good these things actually sound. Not tube, ok, but still output "panda" transformers.

[Steben]

Thanks soulsonic. Now we just need to know what the audio transformers are.
Any suggestions? Or has someone the rest of that mullard book?

Maybe this is interesting:
http://www.sbszoo.com/ve6sbs/sale/xform-aud.htm