Description
The Electro-Voice DME-2181 subwoofer
loudspeaker system is part of the DeltaMax
TM
series and is intended for high-level sound
reinforcement for fixed-installation and
touring-sound applications. The DME-2181
is a double 457 mm (18-inch) loudspeaker
system designed to be used with the
Dx34A digital crossover system. This unit
all provides frequency division, time delay
and equalization, and is appropriate for use
with these subwoofers in connection with
other full-range DeltaMax
TM
series products.
The DME-2181 is a vented-box design that
utilizes two EVX-180A subwoofers. The
EVX-180A subwoofer features a 101.6 mm
(4-inch) voice coil and an extremely high
X
MAX
(maximum linear excursion) for very-
high sound-pressure levels at very low fre-
quencies.
The DME-2181 enclosure is constructed of
18-mm 13-ply birch plywood and is avail-
able in a black carpet finish . The system is a
compact rectangular shape and includes a
unique, protective, powder coated steel grille.
Applications
The DME-2181 loudspeaker system is an
ideal choice for any professional installation
or touring application where accurate low-
frequency sound reproduction at high sound-
pressure levels is required. In combination
with the DeltaMax
TM
electronic control units,
the system will produce maximum fidelity,
extended bandwidth, and reliability. The
DME-2181 and its controllers offer sub-
woofer applications where high acoustic
power is required from 36 Hz to 100 Hz. The
DME-2181 is designed specifically to be
used in conjuction with the full-range
DeltaMax
TM
systems (DME-1152/64 and
DME-1183/64).
Power Handling Test
Electro-Voice components and systems are
manufactured to exacting standards to en-
sure reliability in continuous use in arduous
real-life conditions. Besides utilizing indus-
try-standard power tests, extreme in-house
power tests which push the performance
boundaries of the loudspeakers are also per-
formed for an extra measure of reliability.
The DME-2181 systems are rated per ANSI/
EIA RS-426-A Loudspeaker Power Rating,
Full Range Test, which uses a shaped-ran-
dom-noise signal to simulate typical music
to test the mechanical and thermal capabili-
ties of the loudspeakers. Specifically, the
DME-2181 passes the ANSI/EIA RS-426-A
power test with the follwing test parameters:
P
E(MAX)
: 1,200 watts
Test Voltages: 58.7 volts rms
117.4 volts peak
R
SR
(1.15 R
E
): 2.88 ohms
Crossover, Equalization and Time Delay
Controller
The Electro-Voice Dx34A electronic cross-
over system will provide optimal performance
with the DME-2181 speaker system.
Electrical Connection and System
Wiring
Electrical connections to the DME-2181 are
made on the back of the enclosure via a
4-pin connector. There are two connectors
on the input panel to allow paralleling of
other DME-2181 systems. The Neutrik
Speakon
®
NL4MPR is used for both connec-
tions. The pin assignments are as follows:
Pin 1+: LF1(+)
Pin 1–: LF1(–)
Pin 2+: LF2(+)
Pin 2–: LF2(–)
The wiring diagram of the loudspeaker sys-
tem is shown in Figure 7. The electrical im-
pedance is shown in Figure 6.
DME-2181
DeltaMax
TM
Low-Frequency,
Electronically Controlled
Sound-Reinforcement
Speaker System
• Dual 18-inch enclosure
• EVX-180A woofer with almost 3-dB
additional LF output capability/
reduced distortion
• 1,200-watt long-term power handling
• 36- to 100-Hz operating range
• Alternative new grille design
• Frontal dimensions equal to DME-1183/64
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