QSC Audio HF-75 user manual Connections, HF Input Terminals, HF Output Terminals

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! Do not apply full range signal to the HF-75! There is no crossover in the HF-75, only a compensation/ delay network. All required signal processing must be done upstream of the HF-75. Maintain proper loud- speaker connection polarity throughout the entire system for maximum performance.

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.

QSC DCM or other active crossover

Amplifier

Processed high frequency program signal

HF-75 compression driver

HF-75 connec- tion terminals

Note: The HF-75 connection enclosure does not contain a crossover network! Ensure only high frequency signal is applied to HF INPUT termi- nals or compression driver damage will occur.