QSC Audio PL218A, PL230A, PL236A, PL224A user manual

FEATURES & SETUP- REAR PANEL SWITCHES: GAIN-SENSITIVITY SELECT

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.

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

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