4.2OUTPUT SECTION
BALANCE control
This control allows adjustment of the stereo centre position. The centre detent position gives equal left and right levels.
Turning BALANCE fully CCW cancels all right output signals and vice versa.
BALANCE affects OUTPUT 1 & 2 and Headphones.
DIM switch
Pressing this switch in reduces output levels by 20dB.
DIM affects OUTPUT 1 & 2 and Headphones.
MONO switch
Pressing the MONO switch sums left and right signals.
MONO affects OUTPUT 1 & 2 and Headphones.
LEVEL 1 control
This control adjusts the level of OUTPUT 1. Fully CCW is off and fully CW is +10dB. Unity gain (0dB) is around '7'.
ON switch + led
Switches OUTPUT 1 on and off.
LEVEL 2 control
Similar to LEVEL 1
ON switch + led
Similar to OUTPUT 1.
4.3HEADPHONES SECTION
VOLUME control
Controls the headphones signal level. Fully CCW is off.
The headphone amplifier on the SPX20 is designed to drive headphones with an impedance from 8Ω to 400Ω.
POWER indicator
The green POWER indicator is lit whenever power is applied to the unit.
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