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Old Styl Dumple OD: ears ringin!

5/23/2000 8:26 AM
Dominik	Old Styl Dumple OD: ears ringin! Hi there, with interest I followed the thread about Dumb-le clones. Someone stated that putting a 35 pF cap across the last plate resistor of the OD would cure this. Does anyone else have an idea about taming the harsh sound of the 70s OD?? One more thought about including the Dumble-ator in side the amp: I have juste recently done this. Two preamp strages and the dumbleator in one rack chassis. I must say that things will get crowded the more stages you put into an amp and that noise will go up. Altho I don´t have a problem with oscillations, I have some trouble with hum that is very hard to locate. When I will build my real Dumb-clone I will keep it as simple (as Gil says) as possible. This is a great design and should be kept simple to yield the best sound me thinks. Dominik

5/23/2000 8:26 AM

Dominik

Old Styl Dumple OD: ears ringin!

Hi there,
with interest I followed the thread about Dumb-le clones. Someone stated that putting a 35 pF cap across the last plate resistor of the OD would cure this. Does anyone else have an idea about taming the harsh sound of the 70s OD??

One more thought about including the Dumble-ator in side the amp:

I have juste recently done this. Two preamp strages and the dumbleator in one rack chassis. I must say that things will get crowded the more stages you put into an amp and that noise will go up. Altho I don´t have a problem with oscillations, I have some trouble with hum that is very hard to locate. When I will build my real Dumb-clone I will keep it as simple (as Gil says) as possible. This is a great design and should be kept simple to yield the best sound me thinks.

Dominik

Replies:

Dave B. The cap value you mentioned is .003... -- 5/23/2000 3:12 PM