Electro-Voice MM2 Specifications

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Brand: Electro-Voice

Category: Speakers

Type: Specifications

Model: Electro-Voice MM2 , Electro-Voice MM2F

Pages: 2 (0.45 Mb)

Download Electro-Voice MM2 Specifications

Electro-Voice MM2 Specifications - Page 1
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Electro-Voice MM2 Specifications - Page 2
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MM2
MM2F
Submergence-Proof
Speakers
General Product Description
The Models MM2 and MM2F are submergence-proof
speakers rated at 25 watts, for use in public address or paging
applications.
The drivers employ a diaphragm with a phenolic impregnated
linen-base and 2.0-inch voice coil, with a “W” shaped Alnico
V magnet structure.
The MM2 is equipped with a serrated swivel mounting bracket
and the MM2F is made with six holes in its outer flange for
flush mounting.
The voice-coil/diaphragm assembly is protected by a special
anti-fungicide treatment and is easily accessible for cleaning
by removal of the diecast reflector on the front of the speaker.
The MM2 (MM2F) is self-draining and designed to withstand
fungus, dust, salt spray, live steam, and gases. It is built to
penetrate high noise levels in boiler rooms, mines, railroads,
etc.
Architects’ and Engineers’ Specifications
The loudspeaker shall be integral driver and
submergence-proof speaker with a phenolic impregnated
linen-base diaphragm and rugged two-inch voice coil.
The axial frequency response will extend from 800 to 5,000
Hz and the horn shall exhibit a low-frequency cutoff of 600
Hz. Sound pressure level will be 104 dB (1 W/1 M) with an
800 to 5,000 Hz pink noise signal applied. Dispersion shall
be 82° for the MM2/MM2F.
Outer housing shall be spun aluminum and center assembly
of diecast aluminum. All metal parts of speaker shall be of
anodized aluminum with baked-on acrylic for maximum
protection.
Specifications:
Frequency Response: ................................. 800-5,000 Hz ±5 dB
Power Handling, 8 Hours, 6 dB Crest Factor:
............................................... 25 watts (500-5,000 Hz pink noise)
Impedance: ..................................................... Nominal: 16 ohms
Sound Pressure Level at 1 Meter, 1 Watt Input Averaged, Pink
Noise Band-Limited from 500 to 5,000 Hz:
............................................................................................ 104 dB
Horizontal Beamwidth:
............................... 82° @ 2 kHz (see Figure 2)
Vertical Beamwidth:
............................... 82° @ 2 kHz (see Figure 2)
Directivity Factor R
θ θ
θ θ
θ
(Q): ..................................... 10.25 @ 2 kHz
Usable Low-Frequency Limit: ......................................... 600 Hz
Construction:
Heavy-gauge spun aluminum case and die-cast aluminum
center assembly. All metal speaker parts are of anodized
aluminum with baked-on acrylic paint. Diaphragm is phenolic
impregnated linen-base.
Voice-Coil Diameter: ............................................ 5.1 cm (2.0 in.)
Magnet Weight: .................................0.93 kg (0.42 lb) with plates
Magnet Material: ............................................................. Alnico V
Flux Density: ............................................................... 1.30 Tesla
Dimensions:
Diameter:
MM2 .................................................... 15.2 cm (6.0 in.)
MM2F ................................................. 18.4 cm (7.3 in.)
Depth:
MM2 .................................................... 12.8 cm (5.0 in.)
MM2F ................................................... 9.5 cm (3.8 in.)
Net Weight:
MM2 ........................................................ 2.4 kg (5.3 lb)
MM2F ..................................................... 2.8 kg (6.0 lb)
Shipping Weight:
MM2 ........................................................ 2.8 kg (6.0 lb)
MM2F ..................................................... 4.1 kg (9.0 lb)
COMMERCIAL
Mounting of the MM2 shall be by means of a swivel bracket
capable of at least 90° vertical adjustment.
Mounting of the MM2F shall be by means of six 7/32 inch
diameter holes around a 6.625 inch diameter circle on the
flange.
MM2 dimensions shall be 15.2 cm (6.0 in.) in diameter, by
12.8 cm (5.0 in.) deep. Net weight shall not exceed 2.4 kg
(5.3 lb). The loudspeaker shall be the MM2.
MM2F dimensions shall be 18.4 cm (7.3 in.) in diameter, by
9.5 cm (3.8 in.) deep. Net weight shall not exceed 2.8 kg
(6.0 lb). The loudspeaker shall be the MM2F.