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
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.
