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USW-1P specifications
1. Recommended maximum operating
frequency range. Response depends on
loading conditions and room acoustics.
2. Free field, measured with 1/3-octave
frequency resolution at 4 meters.
3. Measured with music at 1 meter.
4. Power handling is measured under AES
standard conditions: transducer driven
continuously for two hours with band-
limited noise signal having a
6 dB peak-average ratio.
5. Two additional input module options
are available with a polarity reversal
switch and an attenuator (0 dB to
-18 dB): one looping and one with two
inputs for mono summing.
6. Amplifier wattage rating based on the
maximum unclipped burst sine-wave
rms voltage that the amplifier will pro
-
duce into the nominal load impedance.
Both channels 32 V rms (42 V pk) into
4 ohms.
7. No automatic turn-off voltages.
Voltages above 265 V AC are fuse
protected but may cause permanent
damage to the power supply. Voltages
below 90 V AC may result in intermit-
tent operation.
architect specifications
meyer sound laboratories inc.
2832 San Pablo Avenue
Berkeley, CA 94702
T: +1 510 486.1166
F: +1 510 486.8356
techsupport@meyersound.com
www.meyersound.com
USW-1P - 04.078.007.01 C
Copyright © 2005
Meyer Sound Laboratories Inc.
All rights reserved
Operating Frequency Range
1
Frequency Response
2
Phase Response
Maximum Peak SPL
3
Dynamic Range
Low Frequency
Type
Maximum Common Mode Range
Connectors
Input Impedance
Wiring
DC Blocking
CMRR
RF Filter
TIM Filter
Nominal Input Sensitivity
Input Level
Type
Output Power
6
THD, IM, TIM
Load Capacity
Cooling
Connector
Automatic Voltage Selection
Safety Agency Rated Operating Range
Turn-on and Turn-off Points
Current Draw:
Idle Current
Max Long-Term Continuous Current (>10 sec)
Burst Current (<1 sec)
Ultimate Short-Term Peak Current Draw
Inrush Current
32 Hz - 200 Hz
35 Hz - 180 Hz ±4 dB
45 Hz - 155 Hz ±30°
135 dB
>110
360° single unit; varies for multiple units, depending on number
and configuration
Two 15" cone drivers
Nominal impedance: 4 Ω
Voice coil size: 3"
Power-handling capability: 400 W
4
Differential, electronically balanced
±15 V DC, clamped to earth for voltage transient protection
Female XLR input with male XLR loop outputor VEAM all-in-one
(integrates AC, audio and network)
10 kΩ differential between pins 2 & 3
Pin 1: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network
to provide virtual ground lift at audiofrequencies
Pin 2: Signal +
Pin 3: Signal - (optional polarity reversal switch)
5
Case: Earth ground and chassis
Differential DC blocking up to max common mode voltage
>50 dB, Typically 80 dB (50 Hz - 500 Hz)
Common Mode: 425 kHz; Differential Mode: 142 kHz
<80 kHz, integral to signal processing
0 dBV (1 V rms, 1.4 V pk) continuous is typically the onset of
limiting for pink noise and music
Audio source must be capable of producing a minimum of +20 dBV
(10 V rms, 14 V pk) into 600 Ω in order to produce maximum peak
SPL over the operating bandwidth of the loudspeaker
Two-channel complementary MOSFET output stages (class AB/
bridged)
550 W total
<.02 %
4 Ω both channels
Convection; 24 V DC output for optional external fan
PowerCon or VEAM
Automatic, continuous range from 90 V AC - 265 V AC
100 V AC - 240 V AC; 50/60 Hz
90 V AC on, no turn-off, only fuse protected above 265 V AC
7
.0.25 A rms (115 V AC); 0.13 A rms (230 V AC); 0.3 A rms (100 V AC)
2.8 A rms (115 V AC); 1.4 A rms (230 V AC); 3.2 A rms (100 V AC)
3.2 A rms (115 V AC); 1.6 A rms (230 V AC); 3.7 A rms (100 V AC)
5.0 A pk (115 V AC); 2.5 A pk (230 V AC); 5.8 A pk (100 V AC)
<9 A pk (115 V AC and 230 V AC)
Equipped for two-conductor twisted-pair network, reporting
amplifier operating parameters to system operator’s host
computer.
The loudspeaker shall be a self-powered, sub-bass system
which may be flown singly or groundstacked with multiple cabi
-
nets. The transducers shall consist of two 15-inch cone drivers
with 3-inch voice coils.
The loudspeaker shall incorporate internal processing electron
-
ics and a two-channel amplifier. Each amplifier channel shall be
class AB/bridged with complementary MOSFET output stages.
Burst capability shall be 550 watts total with a nominal resistive
load of 4 ohms both channels. Distortion (THD, IM, TIM) shall
not exceed 0.02%.
Performance specifications for a typical production unit shall
be as follows: Operating frequency range shall be 32 Hz to 200
Hz. Phase response shall be ±30 degrees from 45 Hz to 155 Hz.
Maximum peak SPL shall be 135 dB at 1 meter. Beamwidth shall
be 360 degrees for a single unit. Directional characteristics can
be achieved with multiple cabinets.
Notes:
The audio input shall be electronically balanced with a 10 kOhm
impedance and accept a nominal 0 dBV (1 V rms, 1.4 V pk) signal
(+20 dBV to produce maximum peak SPL). Connectors shall be
XLR (A-3) type male and female or VEAM all-in-one (integrates
AC, audio and network). RF filtering shall be provided. CMRR
shall be greater than 50 dB (typically 80 dB 50 Hz to 500 Hz).
Two additional input module options shall be offered with an
attenuator and polarity reversal switch; one with loop-through
output, and another with two summing inputs instead of the
loop-through input and output.
The internal power supply shall perform automatic voltage
selection, EMI filtering, soft current turn-on and surge
suppression. Powering requirements shall be nominal 100, 110
or 230 V AC line current at 50 or 60 Hz. UL and CE operating
voltage range shall be 100 to 240 V AC. Maximum peak current
draw during burst shall be 5 A at 115 V AC, 2.5 A at 230 V AC
and 5.8 A at 100 V AC. Current inrush during soft turn-on shall
not exceed 9 A at 115 V AC. AC power connectors shall be
PowerCon or VEAM all-in-one multi-pin connector.
The loudspeaker system shall provide facilities for installing the
optional RMS remote monitoring system.
All loudspeaker components shall be mounted in an acoustically
vented rectangular enclosure constructed of premium birch
plywood with a hard black textured finish. The front protective
grille shall be hex-stamped steel covered by charcoal gray foam.
Dimensions shall be 31.00" wide x 21.56" high x 21.30" deep
(787 mm x 548 mm x 541 mm). Weight shall be 137 lbs (62.14 kg).
Rigging points shall be three ring and stud pan fittings (on top),
rated at 420 lbs (190.51 kg) per fitting, based on a 5:1 safety
factor; 3/8-inch or metric M10 nut plates are optional.
The loudspeaker shall be the Meyer Sound USW-1P subwoofer.
EuropeanOffice:
MeyerSoundLab.GmbH
CarlZeissStrasse13
56751Polch,Germany
MadebyMeyerSoundLaboratories
Berkeley,CaliforniaUSA
Acoustical
Coverage
Transducers
Audio Input
Amplifier
AC Power
RMS Network (Optional)