QSC HF-75 User Manual page 2

Connections
The HF-75 has barrier strip screw terminals that accept up to #10 AWG stranded loudspeaker wire.
HF INPUT Terminals
Connect the amplifier's output signal to the loudspeaker's HF INPUT terminals. Observe proper polarity; amplifier + signal to loud-
speaker + HF INPUT, amplifier - signal to loudspeaker - HF INPUT. Use the largest wire size and shortest length for the application.
NOTE! Maintain proper loudspeaker connection polarity throughout the entire system for maximum performance.
Do not apply full range signal to the HF-75! There is no crossover in the HF-75, only a compensation/delay net-
work. All required signal processing must be done upstream of the HF-75.
HF OUTPUT Terminals
The HF OUTPUT terminals are factory-connected to the compression driver. These terminals should ONLY be connected to the HF-75's
compression driver.