QSC MH-1063 User Manual

1

*TD-000180-00*

Cinema Mid-High Loudspeaker System User Manual

MH-1063 

10” (254mm) mid, 2.5” (63mm) compression driver 

MH-1075 

10” (254mm) mid, 3.0” (75mm) compression driver 

Introduction

The MH-1063 and MH-1075 “mid-high packs” provide the mid and high frequency 

components of three-way screen channel loudspeaker systems for high performance 

cinema applications. They were designed to operate with and be directly mounted on 

QSC’s cinema low frequency enclosures.

Mid frequencies are reproduced with a 10” (254mm) high-efficiency, phase-ring 

loaded driver mounted on a custom designed cinema horn. The high-frequency driver 

is a large format, 2.5” (63mm, MH-1063) or 3.0” (75mm, MH-1075) titanium dia-

phragm compression driver mounted on a custom high-frequency cinema horn. The 

high frequency horn is a low-distortion waveguide providing highly articulate dialogue 

without coloration associated with conventional horn loudspeakers. Both horns fea-

ture broad horizontal and vertical coverage angles to ensure coverage of every seat in 

the auditorium. The driver assemblies are mounted on an adjustable pan and tilt 

bracket that has an integral aiming sight, simplifying installation.  

The MH-1063 and MH-1075 loudspeakers include a driver protection and crossover 

network to assure reliable operation. DC blocking capacitors protect against DC or 

low-frequency signals that could damage an unprotected driver. Power limiter circuitry 

protects the driver from over-powering and an 18dB/octave crossover seamlessly 

blends the high and mid frequency elements. Outboard processing is required to form 

the crossover between the LF and MH loudspeakers.

Bi-amp or tri-amp operation is possible using a selector switch mounted on the con-

nections panel. The bi-amp setting provides a passive crossover network between mid 

and high drivers. Separate amplifiers and an active crossover are required for the low 

frequency channel and the mid-high channel. Tri-amp setting disables the internal 

mid-high crossover and each driver is driven independently by its own amplifier and 

active crossover; one for the low, one for the mid, and one for the high frequencies. 

The MH-1063 and MH-1075 components come pre-assembled to reduce field assem-

bly time. Three bolts are all that are required to secure the mid-high assembly to the 

top of a QSC low frequency enclosure.

Install in accordance with QSC Audio Product’s instructions and a 

licensed, professional engineer. Only use attachments, mounts, 

accessories, or brackets specified by QSC Audio Products, Inc. Refer 

all servicing to qualified personnel. Servicing is required when the 

apparatus has been damaged in any way.

WARNING! Before placing, installing, rigging, or suspending any 

speaker product, inspect all hardware, suspension, cabinets, trans-

ducers, brackets and associated equipment for damage. Any missing, 

corroded, deformed or non-load rated component could significantly 

reduce the strength of the installation, placement, or array. Any such 

condition severely reduces the safety of the installation and should 

be immediately corrected. Use only hardware which is rated for the 

loading conditions of the installation and any possible short-term 

unexpected overloading. Never exceed the rating of the hardware or 

equipment. Consult a licensed, professional engineer when any 

doubt or questions arise regarding a physical equipment installation.

TD-000180-00 rev.C

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