QSC MHV-1090 User Manual

*TD-000246-00*

Cinema Mid-High-Very High Loudspeaker System User Manual

MHV-1090

 10” (254mm) mid, coax high- very high compression driver

Introduction

The MHV-1090 system provides the mid, high, and very high frequency components of 

four-way screen channel loudspeaker system for high performance cinema applica-

tions. It was designed to operate with and be directly mounted on QSC’s cinema low 

frequency enclosures.

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

logue without the coloration associated with conventional horn loudspeakers. Both 

horns feature broad horizontal and vertical coverage to ensure audio integrity is deliv-

ered to every seat in the auditorium. The driver assemblies are mounted on an adjust-

able pan and tilt bracket that has an integral aiming sight, simplifying installation. 

The MHV-1090 includes a driver protection and high-very high frequency crossover 

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

low-frequency signals that could damage an unprotected driver. A 12 dB per octave 

crossover seamlessly blends the high and very high frequency elements when oper-

ated in tri-amp mode. Outboard processing is required to form the crossover between 

the low, mid, and high-very high frequency drivers.

Tri-amp or quad-amp operation is possible using a selector switch mounted on the 

INPUTS

 connection panel. The tri-amp setting provides a built-in passive crossover 

network between high and very high frequency drivers. Separate amplifiers and active 

crossovers are required for the low, mid, high-very high frequency channels. Quad-

amp setting disables the internal high-very high frequency crossover and each driver 

is driven independently by its own amplifier and active crossover; one each required 

for the low, mid, high, and very high frequency drivers. 

The MHV-1090 components come pre-assembled to reduce field assembly time. Three 

bolts are all that are required to secure the assembly to the top of a QSC low fre-

quency 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, enclosures, 

transducers, brackets and associated equipment for damage. Any 

missing, corroded, deformed or non-load rated component could sig-

nificantly 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 hard-

ware or equipment. Consult a licensed, professional engineer when 

any doubt or questions arise regarding a physical equipment installa-

tion.

TD-000246-00-A

© Copyright 2007, QSC Audio Products, Inc.

QSC® is a registered trademark of QSC Audio Products, Inc.

“QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office

1675 MacArthur Blvd., Costa Mesa, CA, 92626 USA

Main Number (714) 754-6175 Sales & Marketing (714) 957-7100 or toll free (USA only) (800) 854-4079

Customer Service(714) 957-7150 or toll free (USA only) (800) 772-2834

30”

(762mm)

39”

(991mm)

20”

(508mm)