QSC Audio HF-75 Nominal Coverage, Maximum Output, Impedance, Sensitivity, Crossover Frequency

HF-75 Specifications (subject to change without notice)

Frequency Range:	600	- 16k Hz (-6 dB, full space)
Nominal Coverage:	90° horizontal X +15° to -35° vertical (50° total, adjustable mount provides for vertical plane adjustments. The
	horizontal plane can be adjusted by altering mounting position on the LF-4215 enclosure before tightening bolts.
DI:	9.0 dB (600 to 16,000 Hertz average)
Q:	8.0	(600 to 16,000 Hertz average)
Maximum Output:	133	dB SPL calculated peak, 1 meter, half space.
Impedance:	8 ohms nominal

8.0ohms minimum at 3,000 Hertz 104 ohms maximum at 475 Hertz

Maximum Input Power: 60 watts rms (100 hours of 6 dB crest factor pink noise, 500 to 20,000 Hertz, IEC method) 80 watts rms (2 hours of 6 dB crest factor pink noise, 60 - 6,000 Hertz, AES method)

Sensitivity:	108 dB half space, 1 watt, 1 meter
Crossover Frequency:	700 Hertz or higher, 24 dB per octave
Connectors:	Barrier strip screw terminals accept up to #10 AWG stranded wire. Four terminals: (two HF INPUT and two post
	compensation HF OUTPUT). HF OUTPUT factory wired to compression driver.
Transducers:	1.5” (38mm) exit, 3.0” (76mm) titanium diaphragm compression driver.
Mounting Hardware:	Attaches to top of low frequency cabinet using three 5/16”-18 x 3/4” long bolts.
Size:	30” wide X 16” high X 20” deep (762mm X 406mm X 508mm)
Weight:	50 lbs. (shipping), 40 lbs. (net), 22.7/18.4 kilograms

SPL and Impedance vs. Frequency

	SPL
SPL (dB)	Impedance (Ohms)
	Impedance

Frequency (Hertz)