Operating Instructions
Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
USM-1
Specifications
Notes:
1. Measured 1 meter on-axis to high horn, half-space conditions, pink noise input, in third
octave bands.
2. Loudspeaker driven with "A" weighted noise (peak-to-RMS ratio
≈
12dB), with amplifier
rated at 300 W/channel at 8 ohms. The USM-1 will accommodate amplifiers capable of
output levels up to
±
140vpk.
3. Refer to "USM-1 Overall Dimensions" for detailed dimensions. (Available from Meyer
Sound Labs. Inc.)
Acoustical - USM-1/S-1 System
Frequency response
1
40-18k Hz
±
4 dB
Maximum SPL
2
Continuous
130 dB
Peak
139 dB
HF Distribution Pattern
Horizontal
70 degrees
Vertical
60 degrees
USM-1 Loudspeaker
Driver Complement
Low Frequency Driver
MS-15
High Frequency Driver
MS 2001A
High Frequency Horn
70 degree modified radical
HF DC Protection
20
µ
F Polypropylene capacitor
Enclosure
2.3 cu. ft. vented, multi-ply
Finnish birch plywood
Finish
Black textured
Physical Dimensions
3
21" W x 21.5" H x 18" D
Weight
82 lbs. (37.3 kg)
Protective Grill
Hex perforated metal, powder
coated, charcoal-grey foam covering
Connector
Cannon EP-4 (male)
EP-5 (male, Europe only)
Rigging (optional)
Aircraft pan fittings, or M10 x 1.5
or
3
/
8
"-16 nut plate
© 1992,Meyer Sound.
05.151.012.01 A
