Electro-voice Microphone User Manual download pdf (Page 17)

MH-Series Stadium Horns

MH large-format horns feature Manifold

technology, have

a high “Q” and unifor

m directivity control. Because of their

large mouth size, MH horns maintain their beamwidth to

very low frequencies – down to 250 Hz – reducing bass

“spillover” and increasing intelligibility. The HF-section con-

tains an appr

opriate medium-format HP-horn that accepts

EV two-inch-exit single or dual drivers of the designer´s

choice, extending response to 20.000 Hz. HF drivers must be

ordered separately. The dual driver doubles HF output,

important for very long throws. N/DYM

drivers offer the

ultimate output in the upper octaves, important when con-

temporary music is to be heard over long distances. The

large horn size also provides frequency response to 100 Hz,

typically eliminating the need for supplemental low-frequen-

cy systems. The mid-bass section featur

es Aperiodic

Enhancer™ phase plug. It is responsible for the extended

high-frequency response of the mid-band section. It makes

use of the fact that only the apex of the cone (near the voice

coil) is in motion at higher fr

equencies, and automatically

adjusts the acoustic loading to maximize acoustic output.

The main horn bell is a one-piece black polyester and fibre-

glass with fibreglass rib reinforcement. An integral grille-pro-

tection screen built into the manifold chamber protects the

mid-bass for mechanical damage. To get low-frequency

extension one octave lower, the recommended subwoofer is

QRx 218 S.

Large-format MH-horns

MH 4020 AC

(40° x 20°)

MH 6040 AC (60° x 40°)

MH 9040 AC (90° x 40°)

• 2-way coaxial horn-loaded system

• Very high sensitivity

• Very high maximum SPL

• Full-range down to 100 Hz (-10 dB)

• Mid-Bass section features Aperiodic

Enhancer™ and Manifold® Technology

• Water resistant (incl. Kevlar® epoxy cone)

• HF-horn with 2-inch throat diameter

(Driver is of the designer´s choice)

• Excellent uniform directivity control down to

low frequencies

•

Same fr

ont dimensions for unifor

appearance when used in arrays

• Integral 18-point hanging hardware

in polyester

-powder-coated steel for flexible mounting

MH 4020 AC MH 6040 AC MH 9040 AC

equency Range (-10 dB)

100 - 20.000 Hz 100 - 20.000 Hz 100 - 20.000 Hz

Recommended High-Pass Frequency 130 Hz (24 dB/Oct.) 130 Hz (24 dB/Oct.) 130 Hz (24 dB/Oct.)

Axial Sensitivity SPL 1W/1m 109 dB 107 dB 105 dB

Max. SPL / 1m (calc.); full space 146 dB 141 dB 139 dB

Long-Term Power Handling (Mid-Bass) 1.200 W 600 W 600 W

Short-Term Power Handling (Peak) (Mid-Bass) 4.800 W 2.400 W 2.400 W

Coverage (nominal -6 dB) H

x V

° x 20° (CD Horn) 60° x 40° (CD Horn) 90° x 40° (CD Horn)

Directivity Index (500 - 20.000 Hz) 18.0 dB (---/---) 13.8 dB (+0.9/-1.1 dB) 10.2 dB (+0.9/-1.1 dB)

LF woofer (transducer) 4 “x 10" (DL10X-SH) 2” x 10" (DL10X-SH) 2” x 10" (DL10X-SH)

HF thr

oat diameter (horn typ) 2" (HP420A) 2" (HP640) 2" (HP940)

Crossover Frequencies (slope) 1.600 Hz (24 dB/Oct.) 1.250 Hz (24 dB/Oct.) 1.250 Hz (24 dB/Oct.)

Nominal Impedance (mid-bass) 2 x 8 Ω 8 Ω 8 Ω

Minimum Impedance (mid-bass) 2 x 3.1 Ω 5.9 Ω 5.9 Ω

Input Connections heavy-duty copper cable heavy-duty copper cable heavy-duty copper cable

Dimensions (H x W at front x D) 1500 x 991 x 1880 mm 1500 x 991 x 1873 mm 1500 x 991 x 1534 mm

59’ x 39’ x 73.9”

59” x 39” x 73.9”

59” x 39” x 60.4”

Net W

eight (without HF-driver)

108 kg (237 lbs.)

75 kg (165 lbs.)

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 91 92

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Electro-voice Microphone User Manual Page 17

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