Electro-Voice Microphone - Manual (Page 16)

16
MH-Series Stadium Horns
MH-Series stadium horns are designed for large-scale sta-
diums and arenas where high-fidelity sound and directivity
control from low mid-bass frequencies and below are
absolutely essential. In 1974, EV pioneered the concepts of
constant directivity (horn angles that are constant with fre-
quency) and Manifold
® technology (which combines the
outputs of multiple transducers into one source). Large-
format MH horns incorporate both in several horn/
driver systems. Medium-format MH horns are excellent
for short/medium throw applications or as infills for large-
format MH-horns.
Medium-format MH-Series horns
MH medium-format horns have a high Q and uniform
directivity control down to 500 Hz. The mid-bass section
features an Aperiodic Enhancer™ phase plug which extends
the high-end output to blend seamlessly into the coaxial
high-frequency section. The HF section contains a small-
format HP horn with EV´s patented Transplanar™ design to
provide exceptionally smooth frequency response. The one-
piece main horn bell is a black polyester/fiberglass laminate
with composite reinforcement. Up to three pieces can be
paralleled in active or passive mode without a minimum
impedance load at the amplifier.
MH640AC/MH640AP
(60° x 40°)
MH660AC/MH660AP
(60° x 60°)
MH940AC/MH940AP
(90° x 40°)
• Two-way, extraordinary output mid/high
CD horn system
• High sensitivity: 107 dB/1 W/1 m
• Coaxial horn-loaded
• P version has passive crossover
• Water-resistant Kevlar ® epoxy cone
• MB horn features Aperiodic Enhancer™ phase plug
• 2" voice coil (titanium diaphragm)
• HF driver protection circuit
• Uniform directivity control to 500 Hz
• All models have same dimensions for uniform-
looking arrays
• Integral 4-point hanging hardware in polyester-
powder-coated steel
MH640AC/AP MH660AC/AP MH940AC/AP
Frequency range (-3 dB) 150 Hz–20 kHz 150 Hz–20 kHz 150 Hz–20 kHz
Recommended high-pass 160 Hz (24 dB/Oct.) 160 Hz (24 dB/Oct.) 160 Hz (24 dB/Oct.)
frequency
Sensitivity (SPL 1 W/1 m)
107/111 dB; 107 dB 107/111 dB; 107 dB 107/111 dB; 107 dB
Max. SPL/1m (calc.) 138 dB 138 dB 138 dB
Long-term power handling 300 W/60 W; 300 W 300 W/60 W; 300 W 300 W/60 W; 300 W
Short-term power handling 1,200 W/240 W; 1,200 W 1,200 W/240 W; 1,200 W 1,200 W/240 W; 1,200 W
Coverage (H° x V°) 60° x 40° (CD Horn) 60° x 60° (CD Horn) 90° x 40° (CD Horn)
Directivity Index (500 Hz–20 kHz) 13.7 dB (+1.6/-2.8 dB) 13.7 dB (+1.6/-2.8 dB) 12.6 dB (+3.8/-4.0 dB)
LF driver 10" (DL10X) 10" (DL10X) 10" (DL10X)
HF driver (voice coil) 2"(DH2T) 2"(DH2T) 2"(DH2T)
Crossover frequencies 1,600 Hz 1,600 Hz 1,600 Hz
(slope in biamp mode) (24 dB/Oct.) (24 dB/Oct.) (24 dB/Oct.)
Nominal impedance 16 Ω /8 Ω ; 8 Ω 16 Ω /8 Ω ; 8 Ω 16 Ω /8 Ω ; 8 Ω
Input connections Dual barrier strips Dual barrier strips Dual barrier strips
Dimensions 686 x 686 x 711 mm 686 x 686 x 711 mm 686 x 686 x 711 mm
(H x W at front x D) 27" x 27" x 28" 27" x 27" x 28" 27" x 27" x 28"
Net weight 27.2 kg (60 lbs.) 27.2 kg (60 lbs.) 27.2 kg (60 lbs.)
(Large format: without HF driver)