QSC mid-high components are all about intelligibility. The midrange element — a 10-inch, high-output, horn-loaded cone driver — places nearly the entire dialog range on a single element, helping audiences hear every word clearly.

For high frequencies, our 3-way systems feature a high-performance titanium diaphragm compression driver. In 4-way systems, our proprietary HF/VHF driver uses coaxial diaphragms to provide superior fidelity. And because all systems include a passive crossover, we give you plenty of choices for bi-/tri-amp or tri-/quad-amp operation.

Model 2150-HF1 MH-1075C MH-1075C-F MHV-1090 MHV-1090F2
System Models

3-way (shallow): SC-2150 

3-way: SC-413C,
SC-323C, SC-423C, 
SC-423C-8, SC-433C,
SC-443C

3-way (flying):
SC-423C-F

4-way: SC-324,
SC-414, SC-424,
SC-424-8, SC-434,
SC-444

4-way (flying):
SC-424-8F

Driver Information

6.5" high-efficiency
mid range, 1" (25.4
mm) exit, 1.4" (35.5
mm) diaphragm
compression driver

10" high-efficiency midrange,
1.5" (38 mm) exit, 3" (75 mm)
titanium diaphragm
compression driver

10" high-efficiency
midrange, 1.5"
(38 mm) exit,
3" (75 mm) titanium
diaphragm compression 
driver

MF: 10" high-efficiency,
horn-loaded cone
HF/VHF: coaxial neodymium
compression driver with 3.5"
(90 mm) HF diaphragm and
1.75" (44 mm) VHF diaphragm

MF: 10" high-efficiency,
horn-loaded cone
HF/VHF: coaxial neodymium
compression driver with 3.5"
(90 mm) HF voice coil and
1.75" (44 mm) VHF voice coil

Impedance
(Bi-Amp mode)

8Ω (TRI-AMP MODE)

Rated Noise
Power3
80 W RMS4

Bi-amp: 350 W RMS
Tri-amp: MF 275 W RMS
HF 75 W RMS

Bi-amp: 350 W RMS

Tri-amp: MF 275 W RMS
HF/ VHF 230 W RMS
Quad-amp: MF 275 W RMS
HF 150 W RMS
VHF 80 W RMS 2

Tri-amp: MF 275 W RMS
HF/ VHF 230 W RMS

Sensitivity5 102 dB

Bi-amp: 105 dB
Tri-amp: MF- 105dB
HF- 107.5dB

Bi-amp: 105 dB
Tri-amp: MF- 105dB
HF- 107.5dB

Tri-amp: MF 105 dB,
HF/VHF 110 dB,
Quad-amp: MF 105 dB, HF 110
dB, VHF 110 dB

Tri-amp: MF 105 dB,
HF/VHF 110 dB

Dimensions (HWD) inches 17.3 x 16.3 x 6.8 38.8 x 30 x 20.25 40 x 31.5 x 19 38.8 x 30 x 20.25 40 x 31.5 x 19
Dimensions (HWD) mm 440 x 414 x 173 985.5 x 762 x 514.4 1016 x 800.1 x 482.6 985.5 x 762 x 514.4 1016 x 800.1 x 482.6

1 Not designed for tri-amp operation.
2 Not designed for quad-amp operation.
3 2 hours of 6 dB crest factor pink noise, AES method.
4 Pink noise, 500 Hz – 20 kHz, 6 dB crest factor, 2 hrs, Power = Vrms2/Znom
5 Based on nominal impedance, measured in half space 1 W @ 1 m. 


MH and MHV systems connect with barrier strip screw terminals that accept up to #10 stranded wire except the 2150-HF and MHV-1090F, which use Neutrik Speakon™ NL4.