QSC Audio PL230A - Manual (Page 9)

GAIN-SENSITIVITY SELECT- This switch selects the gain structure of the amplifier. Each channel
runs through a gain buffer which allows all models to have either a uniform 1.2 Vrms input sensitivity or
a uniform 26 or 32 dB of voltage gain (all measured with the GAIN controls at maximum). The internal
signal leaving this stage is approximately +4 dB, leaving about 16 dB of headroom for the rest of the
signal processing. NOTE: The GAIN-SENSITIVITY SELECT setting does not effect DataPort gain in any
mode.
FEATURES & SETUP- REAR PANEL SWITCHES: GAIN-SENSITIVITY SELECT
1.2 Vrms: This selection sets the input sensitivity to approximately 1.2 Vrms.
This is the input voltage required to drive the amplifier to rated output power
into an 8 ohm load.
26 dB: This selection sets the maximum voltage gain of the amplifier to
approximately 26 dB.
32 dB: This selection sets the maximum voltage gain of the amplifier to
approximately 32 dB
9