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Re: T-Filter!


 :
7/15/2004 4:56 PM
Munk Re: T-Filter!
Ive built a few SLO amps and even though they sound very good I still feel you just cannot beat a good marshall or fender amp!  
 
The classics just never die!!!  
 
Munk
 
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7/17/2004 9:40 PM
Rick Erickson

quote:
"Maybe you are able to give a tiny little hint as to what Mike really does? LOL ;-)"
 
 
No, but I will tell you what I put into a Brown Tolex 6G2 Princeton amp. The network went in between the first stage coupling cap and the 1M Vol. pot. Using the component #'s from your diagram, R1 & R2 = 220K, C1= 500pF, C2=.0033uF. You can plug these values into a circuit simulator to see the effects of changing the components or just listen as you make changes in the amp.  
 
RE
 
7/17/2004 9:50 PM
Rick Erickson

I forgot to mention - Regarding the 6G2 Princeton: I also removed the NFB loop and added a 22uF cap across the second stage cathode resistor to bring back the lost gain from the network and increase low frequencies a bit.  
 
RE
 
7/18/2004 10:02 PM
Terry Shipman

Hi Dominik,  
 
Have a look at this for an explanation on T filters:  
 
http://www.geofex.com/Article_Folders/EQs/paramet.htm#bridged_t  
 
Cheers,  
 
Terry
 
7/20/2004 8:43 PM
Dutch

 
 
test
 

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