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USM-1 Specifications
Acoustical – USM-1/S-1 System
1
Frequency Response
2
Maximum SPL
Continuous
Peak
Maximum Peak (Music Signal)
HF Coverage, -6dB points
Acoustical Crossover Frequency
USM-1 Loudspeaker
Transducers
Low Frequency
High Frequency
High Frequency Horn
HF Network
Enclosure
Finish
Protective Grill
Connector
Rigging (optional)
Physical Dimensions
Weight
S-1 Control Electronics Unit
Input Type
3
Output Type
Maximum Input/Output Level
Balanced
Unbalanced
Hum and Noise
4
Dynamic Range
Sense Inputs
Low-Frequency Delay Type
Driver Protection Circuitry
Low Frequency
High Frequency
Indicators
Sense/Gain Detect, Hi and Lo
Limit, Hi, Lo, and VHF
Safe
Power Supply
Controls
Front Panel
Preset Panel
Connectors
Balanced Inputs/Outputs
Sense Inputs
Power
Physical Dimensions
Weight
40-18k Hz +4 dB
130 dB
139 dB
144 dB
70 horizontal x 60 vertical
900 Hz
MS-15 15-inch cone driver, 12 ohms
MS-2001A 2-inch throat compression driver, 8 ohms
70 degree modified radial
DC blocking capacitor
2.3 cu. ft. vented, multi-ply Finnish birch
Black textured
Hex perforated metal, powder coated, charcoal-
grey foam covering
EP-4 male, EP-5 male (Europe only)
Aircraft pan fittings or
3
⁄
"-16 or M10 x 1.5 nut plates
8
1
1
21" W x 24
⁄
" H x 18
⁄
" D
4
4
82 lbs. (37.3 kg)
Active balanced ISO™ input, 10k ohms, 5k ohms per leg
Active push-pull, will drive 600 ohms
+26 dBu
+20 dBu
-90 dBV
>110 dB
100k ohms true differential
Active all-pass
RMS limiter and excursion limiter
RMS limiter and excursion limiter
VHF Peak limiter
Green/Red LEDs
Red LEDs
Green LED
Green/Red LED
Input attenuator, AC power switch
Lo Cut switch, Safe switch, VHF switch, VHF control
3-pin XLR (A-3)
Banana jacks
90-105/180-250 VAC, 50/60 Hz (rear-panel switchable)
19" W x 1
3
⁄
" H x 7
3
⁄
" D standard rack mount
4
4
8 lbs. (3.6 kg)
Note 1:
Measured 1 meter on-axis to
high horn, half-space con–
ditions, pink noise input, in
third-octave bands.
Note 2:
Loudspeaker driven with "A"
weighted noise (peak-to-RMS
ratio 12 dB), with amplifier
rated at 600 W/channel at
8ohms. The USM-1 will accom-
modate amplifiers capable of
output levels up to 140 vpk.
Note 3:
ISO™ input: Pins 1, 2 and 3 are
transformer isolated, shell is
connected to chassis/AC
mains ground.
Note 4:
"A"- weighted, unbalanced.
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