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Looking at the schematics for the hi/med/low switch, it looks like a 27 ohm on the power switch for low, 150 ohm for med and no resistor for high.
These resistors bleed off some of the signal to lower the output.
Can't you just run the amp on medium or low to drop the dead key?
Adding a resistor to the high setting to bleed off some drive is the same as switching to a lower power level.

73
Jeff

[QUOTE="AudioShockwav, post: 791534, member: 6"] Looking at the schematics for the hi/med/low switch, it looks like a 27 ohm on the power switch for low, 150 ohm for med and no resistor for high. These resistors bleed off some of the signal to lower the output. Can't you just run the amp on medium or low to drop the dead key? Adding a resistor to the high setting to bleed off some drive is the same as switching to a lower power level. 73 Jeff [/QUOTE]

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