Juancito12
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- May 30, 2007
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I'd like to mod my Rectoverb from fixed to adjustable bias. Mesa won't provide the schematic for amps in production but I did find a posting for the Solo 50/Recto Series I on free society:
www.freeinfosociety.com/electronics/schempage.php?cat=1
I know they change board layouts all the time in amps. My rectoverb circuit board is not exactly user friendly for a nube. I believe I found the resistor in the bias supply. Its a 22K resister (red red brown orange) at the bottom of the board under the right corner of the 30uf filter cap. The schematic for the bias supply shows three resistors in series: 68K, 22K and 33K but my circuit board only has the 22k resistor in place. The 22K resistor leads to a 1k resistor then goes across the bottom of the board to a white 220 ohm resistor before it goes on to a series of rectofiers and gets lost.
Questions:
1) is that 22K resistor the right one to mod?
2) what do you think of a 15k resistor in series with a 15K pot?
3) Or maybe a higher value pot?
Thanks for the help.
www.freeinfosociety.com/electronics/schempage.php?cat=1
I know they change board layouts all the time in amps. My rectoverb circuit board is not exactly user friendly for a nube. I believe I found the resistor in the bias supply. Its a 22K resister (red red brown orange) at the bottom of the board under the right corner of the 30uf filter cap. The schematic for the bias supply shows three resistors in series: 68K, 22K and 33K but my circuit board only has the 22k resistor in place. The 22K resistor leads to a 1k resistor then goes across the bottom of the board to a white 220 ohm resistor before it goes on to a series of rectofiers and gets lost.
Questions:
1) is that 22K resistor the right one to mod?
2) what do you think of a 15k resistor in series with a 15K pot?
3) Or maybe a higher value pot?
Thanks for the help.
