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Post subject: Re: Resistor Question 66 Princton
Posted: Sat Jun 15, 2013 4:15 pm
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Does the vibrato/tremolo circuit still work in this amp? Seems that the whole Intensitry pot is bypassed?

Thanks!

http://i1046.photobucket.com/albums/b46 ... ed69d3.jpg


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Post subject: Re: Resistor Question 66 Princton
Posted: Sat Jun 15, 2013 5:57 pm
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BMW2002Ti wrote:
Does the vibrato/tremolo circuit still work in this amp? Seems that the whole Intensitry pot is bypassed?

Thanks!

http://i1046.photobucket.com/albums/b46 ... ed69d3.jpg


I believe he indicated that the tremolo had been deliberately disabled (see his second follow-up post).

Arjay

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Post subject: Re: Resistor Question 66 Princton
Posted: Sat Jun 15, 2013 9:10 pm
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Right, Arjay!!! As I see it, the vib circuit was gutted, in favor of a presence control and PI redesign. The 470ohm screen resistors are OK(IMO), given the dropping resistors change. Guess, I understand the bias adjust design. But I'm not clear on the PI mod!!! Art

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Post subject: Re: Resistor Question 66 Princton
Posted: Sat Jun 15, 2013 9:19 pm
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aclempoppi wrote:
As I see it, the vib circuit was gutted, in favor of a presence control and PI redesign.


Pretty much SOP when adding an adjustable bias pot since the PR's trem is the bias-modulated type.

Arjay

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Post subject: Re: Resistor Question 66 Princton
Posted: Sat Jun 15, 2013 11:32 pm
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Sorry, don't know what "SOP" means. Art

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Post subject: Re: Resistor Question 66 Princton
Posted: Sun Jun 16, 2013 1:35 am
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"Standard Operating Procedure"

Arjay

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