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Adding Negative Feedback to the 18W Plexi

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DaveC

Post subject: Adding Negative Feedback to the 18W Plexi

Posted: Mon Apr 03, 2017 10:23 pm

Friend

Joined: Sat Sep 01, 2012 9:08 pm
Posts: 24
Location: Sudbury, Ontario

I'm sure this has been done many times by users here.

I'm in the experimenting phase and my interest here is not to include a presence control but simply add the feedback resistor and shunt resistor to the appropriate point on the LTPPI with feedback taken from the 8ohm secondary tap. If it was just a TMB circuit then I'm pretty sure I know what to do (courtesy of Merlins book). However, the normal channel feeds into this as well, and that has me a scratching my head. Has anyone created a schematic for this?

Thanks in advance ...Dave

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coco

Post subject: Re: Adding Negative Feedback to the 18W Plexi

Posted: Mon Apr 17, 2017 9:11 am

Holy Ghost

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7519
Location: Canada

Yes, it has been done. Take a look at thisschematic. It was prepared by unimind http://www.unimind.us/images/Trinity18_ ... ematic.jpg

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