Hairy

[duesentrieb]

I have to stay with "doctor" - no university was so kind to offer me a 'venia legendi' so far (who knows, I'm old but not that old . . . ).

Do you still use the CAE Preamp?

 

[lordriffenstein]

I have to stay with "doctor" - no university was so kind to offer me a 'venia legendi' so far (who knows, I'm old but not that old . . . ).

Do you still use the CAE Preamp?

Yup, still using the same setup. I have a different looper now and changed a couple of pedals but the main ingredients are still the same.

 

[duesentrieb]

Would you like to compare it to one of mine, Yoeri? I could send you one for testing . . .

 

[duesentrieb]

Thanks Dave.

 

[duesentrieb]

I like the PTP board idea, very cool. I was thinking of doing this kind of thing myself with some of the rebuilds i'm doing. What board material are you using for this?

Hi Dan, here's the link to the ebay store.

http://stores.ebay.de/PhenolEpoxyPertin ... 34.c0.m322

 

[MrDan666]

Hi Dan, here's the link to the ebay store.

http://stores.ebay.de/PhenolEpoxyPertin ... 34.c0.m322

Thanks Olaf! You I have another amp mod in the works and i think i will use that FR4 board in the amp for this one

 

[CaseyCor]

Great, like always Olaf. I will own something of yours some day, for sure. I still think about that Black Tiger Pre all the time.

 

[duesentrieb]

Thanks Casey.
I will probably go PCB with the preamps too, so it might not be too long until I am able to offer them.

 

[lordriffenstein]

Would you like to compare it to one of mine, Yoeri? I could send you one for testing . . .

Mmm very tempting but only under 1 condition. You send it over (I'll pay for the shipping) and you personally come and pick it up! I'll make sure Hunter/Christophe is available so we can have a little ampfest.

 

[duesentrieb]

Agreed

With pleasure of course.

 

[Jay Omega]

What tubes are you using for the poweramp?

 

[duesentrieb]

A pair of JJ 6V6S tubes. Class A/B.

 

[Mailman1971]

Just listened to the clips you put up...........

man,......that tone is AWESOME!!!!!!!

 

[Jay Omega]

Great build I love the tone! Can you give some info about the topology of channel three? How many gain stages/cathode followers and where is the tone stack?

 

[duesentrieb]

Merci

Channel 3 = four gainstages & a CF driving the tonestack, no cold biased stage included.

 

[Jay Omega]

Does the tone stack feed the power amp or is it after the first stage? Sorry for all the questions

 

[duesentrieb]

No prob, as long as you don't want to see a concrete schematic

In - V1A (feeds all channels) --> 22nF (tonestack channel 1) --> 1nF (rest of circuitry)
V1B - from tonestack channel 1 . . . . relay in front of loop
(relay after gainpots of both channels into) V2A - 2nd stage of channel 2/3
V2B - 3rd stage of channel 2/3 (in some amps I bypass this for channel 2)
V3A - 4th stage of channel 2/3
V3B - CF - feeds tonestack (think Marshall)
channel 2/3 volumes into relay - those into "main relay" to switch between 1/2/3 into loop
V4 - loop (series/parallel) - think Engl/Boogie, just better
V5 - LTP Phase Inverter (think Marshall, also with NFB as Marshall with depth and things, just different values)
V6, V7 - poweramp

 

[duesentrieb]

here's a (not quite correct) schematic of one of my preamps, it is similar - the "output" tube in Little Joe would be the loop and the poweramp would follow it . . .

http://www.duesentriebamps.com/BlackTiger.gif

 

[Jay Omega]

Cool, thanks for the info! I'm a bit of a builder myself and def wouldn't ask you for a full schematic because I know how much work goes into tweaking a final product..

I've been working on high gain channels for the past couple years and I could spend a couple more decades trying to figure it out

 

[duesentrieb]

Mercy