Page 1
» Twin 21" Neodymium
loudspeakers with 6" voice
coils
» Impressive 60 mm peak-to-
peak excursion
» Solid 21 mm Birch plywood
construction
» Front located connectors
for cardioid configurations
The UX-221 is a high-power ultra low frequency
subwoofer system designed to provide outstanding
performance in terms of output power, bandwidth
extension and distortion.
The UX-221 comprises two 21" loudspeakers equipped
with 6" voice coils and offers a power handling capacity
of 8000 Wpeak each loudspeaker. The impressive 60 mm
peak-to-peak excursion, powerful neodymium magnet
assembly and double silicone spider with optimized
compliance provide for commanding low frequency
response.
The enclosure is constructed using 21 mm Birch
plywood and makes use of extensive bracing to eliminate
resonances. The woodwork is finished with the robust
D.A.S. ISO-flex protective coating for durability.
A dolly platform with locking casters denominated the
PL-221S is offered to stack and move the systems.
Protection during transport is provided by the optional
covers available from D.A.S.
Dimensions
High power ultra low frequency
subwoofer system
1
Corresponds to the AES power handling rating for the
component, based on a 2 hour test using a 6 dB cr est
factor bandlimited pink noise signal.
2
Corresponds to the signal cr ests for the test described
in1.
28 Hz - 125 Hz
2 x 2000 W
2 x 8000 W
104 dB SPL
145 dB SPL
2 x 21UXN4 / GM 21UXN4
2 x 4 ohms
Birch Plywood
Black ISO Flex Black Paint
4 x NL-4 speakON (2 rear, 2 front)
paralleled , wired to ±1 LF1, ±2 LF2
60 x 120 x 110 cm
23.6 x 47.2 x 43.3 in
130 kg (286 lb)
ANL-2 - M10 Stainless steel rigging kit
Frequency Range (-10 dB)
RMS (Average) Power Handling
(1)
Peak Power Handling
On-Axis Sensitivity 1 W / 1 m
Rated Maximum Peak SPL at 1 m
(2)
Transducers/Replacement Parts
Nominal Impedance
Enclosure Material
Color/Finish
Connectors
Dimensions (H x W x D)
Weight
Accessories
Technical Specifications
aeroseries
2
UX-221
Page 2
Frequency Response
Shows the frequency
response at 1 m of a
unit radiating to an
anechoic environment
and driven by a 1.41 V
swept sine wave signal
(both drivers connected
in parallel). Grey
unprocessed, black with
DSP 4080 recommended settings.
10 100 1k 10k 20k10 Hz
120.0
dBSPL
110.0
100.0
90.0
80.0
70.0
NOTES. 1.Frequency response: referred to 1 m; low end obtained thr ough the use of near field techniques;
one-third octave smoothed for correlation with human hearing.
UX-221
Product improvement through r esearch and development
is a continuous process at D.A.S. Audio. All specifications
subject to change without notice.
aero series
2
Impedance
Shows impedance curve.
10 100 1k 10k 20k10 Hz
50.0
Ohm
40.0
30.0
20.0
10.0
0.0
Recommended signal processing
LR-48 25 Hz
LR-48 99 Hz
Recommended amplifier power
2 x 2800 W @ 4 ohms (D-100 amplifier
can drive up to 2 UX-221 units: 4 x 21",
2800 W each)
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