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Horizon Fitness 3.1 User Manual page 13

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Easy Set Bias Adjustment
Easy set bias makes adjusting tube bias quick and easy. You can access the channel selector for the Easy Set Bias from
the outside of the chassis without having to take off the top cover. Dial in the bias by turning the blue trimmers clockwise if
bias for the channel is low or counter-clockwise if the bias for the channel is high. Rotate trimmer until both LED 's turn off.
To set, make sure to turn off any music source playing into the amp and turn the volume down to its lowest setting
BIAS TEST OFF – LEAVE
SETTING IN THIS
POSITION AT ALL TIMES
UNLESS TESTING BIAS
BOTTOM LED GLOWING =
BIAS VOLTAGE LOW
HOW TO SET BIAS USING THE EASY SET BIAS FEATURE
RIGHT CHANNEL BIAS
TEST SETTING
TOP LED BRIGHT = BIAS
VOLTAGE HIGH
ROTATE TRIMMER
ROTATE TRIMMER
CLOCKWISE TO RAISE
CLOCKWISE TO RAISE
BIAS VOLTAGE
BIAS VOLTAGE
ROTATE TRIMMER
ROTATE TRIMMER
COUNTERCLOCKWISE TO
COUNTERCLOCKWISE TO
LOWER BIAS VOLTAGE
LOWER BIAS VOLTAGE
LEFT CHANNEL BIAS
TEST SETTING
BOTH LEDS OFF =
CORRECT BIAS VOLTAGE

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