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DeltaMax
Specifications
Frequency Response (measured in far
field, calculated to one meter on axis,
swept si ne wave, one watt into LF
section 2.83 V at 250 Hz, anechoic
environment; see Figure 2):
50-16,000 Hz
Crossover Frequency:
1,480 Hz
Efficiency, LF/HF:
4.2/25 %
Maximum Long-Term-Average Power-
Handling Capacity (per ANSI/EIA RS-
426-A 1980), LF/HF:
600/60 watts
Maximum Long-Term-Average Midband
Acoustic Output, LF/HF:
25/15 acoustic watts
Sensitivity (SPL at one meter, indicated
input power, anechoic environment,
average level), LF/HF,
1/1 watt:
98.0/113.0 dB
300/60 watts:
125.5/131.0 dB
Beamwidth (angle included by 6-dB-
down points on polar responses, indi-
cated one-third-octave bands of pink
noise; see Figures 1 and 3),
Horizontal, 1,200-16,000 Hz:
60° (+40°, –5°)
Vertical, 1,200-16,000 Hz:
40° (+28°, –15°)
Directivity Factor, R
(Q), 1,200-16,000
θ θ θ θ θ
Hz Average (see Figure 4):
19.7 (+7.2, –6.8)
SPEAKERS—MT and DeltaMax
8
TM
DMS-1152/64 Loudspeaker System
Directivity Index, D
Average (see Figure 4):
13.0 dB (+1.4 dB, –1.8 dB)
Distortion (115 dB SPL at one meter,
shaped spectrum; see Figure 5),
Second Harmonic,
100 Hz:
1.6 %
500 Hz:
0.9 %
2,000 Hz:
1.3 %
5,000 Hz:
1.0 %
Third Harmonic,
100 Hz:
0.3 %
500 Hz:
1.0 %
2,000 Hz:
<0.1 %
5,000 Hz:
<0.1 %
Transducer Complement,
HF:
DH2T driver, HP 64M 60° x 40° horn
LF:
EVX-155 15-in. woofer
Impedance (see Figure 6),
Nominal, LF/HF:
8/8 ohms
Minimum, LF/HF:
7.4/6.9 ohms
Input Connections:
Two Neutrik NL4MPR Speakon
connectors paralleled
600 Cecil Street, Buchanan, MI 49107
800/234-6831, 616/695-6831, Fax 616/695-1304
TM
, 1,200-16,000 Hz
Recommended Amplifier Power,
i
HF:
LF:
Enclosure Construction,
Enclosure Shell:
Finish:
Grille:
Rigging (DMS-1152/64PF only):
Two-point heavy-duty L-track system,
accepts New Haven NH32102-2
double-stud fittings, or New Haven
NH8192-2S or Ancra 42546-10 single-
stud fittings with safety pins
Dimensions,
Height:
Width (front):
Width (back):
Depth:
Angle:
Net Weight:
35.4 kg (78 lb)
Shipping Weight:
37.6 kg (83 lb)
®
125-250 watts
600-1,200 watts
18 mm, 13-ply birch plywood
Black textured paint
Vinyl-coated steel with foam
759 mm (29.88 in.)
450 mm (17.73 in.)
248 mm (9.75 in.)
413 mm (16.28 in.)
30° wedge
Part Number 533480—9806
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