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Specifications
Typical Axial Frequency Response
(swept one-third-octave pink noise,
anechoic environment, 4 volts at 10
feet, normalized for 1 watt/1meter; see
Figure 1):
40-250 Hz
Low-Frequency 3-dB-Down Point:
40 Hz
Usable Low-Frequency Limit
(10-dB-Down Point):
31 Hz
Half-Space Reference Efficiency:
6.0%
Long-Term Average Power-Handling
Capacity per ANSI/EIA RS-426-A
1980
(see Power-Handling Capacity
section):
600 watts
Maximum Woofer Acoustic Output:
36 watts
Sensitivity (SPL at 1 meter, 1 watt
input, anechoic environment, band-
limited pink noise signal, 50 to 200
Hz):
99 dB
SPEAKERS—Portables
6
Sb180 Subwoofer
Dispersion Angle Included by 6-dB-
Down Points on Polar Responses:
Essentially omnidirectional
Distortion, 0.1 Full Power Input (see
Figure 2),
Second Harmonic,
100 Hz: –52 dB, 0.25%
Third Harmonic,
100 Hz: –44 dB, 0.63%
Transducer Complement:
EVX-180B
Box Tuning Frequency:
38 Hz
Recommended Crossover Frequency:
250 Hz or below
Recommended Crossover Slope:
12 dB per octave
Impedance,
Nominal:
8 ohms
Minimum:
6.1 ohms
Input Connectors:
Two Neutrik Speakon
Mounting:
Top surface contains stand mount
receptacle for use with satellite
speaker system
600 Cecil Street, Buchanan, MI 49107
616/695-6831, 616/695-1304 Fax
©Telex Communications, Inc., 1999 • Litho in U.S.A.
Materials,
Enclosure:
Black, texture painted ¾-in. void-
free plywood
Grille:
Black perforated metal
Enclosure Dimensions (see Figure 3),
Height:
603.3 mm (23.75 in.)
Width:
571.5 mm (22.5 in.)
Depth:
806.5 mm (31.75 in.)
Net Weight:
46.3 kg (102lb)
Shipping Weight:
50.9 kg (112 lb)
®
NL4MPR-V
Part Number 534853 — 9927
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