Operating Instructions
Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
UM-1C
UltraMonitorTM
Specifications Acoustical - UM-1C/M1A System
Frequency Response170 Hz to 18 kHz ±4dB
-6 dB at 55 Hz and 20 kHz
Maximum SPL2 with amplifier rated at: 250W/8 ohms/ch 60W/8 ohms/ch
Continuous 125 dB 120 dB
Peak 132 dB 126 dB
HF Coverage Pattern 60 degrees symmetrical
UM-1C Loudspeaker
Driver Complement
Low Frequency Driver MS-12
High Frequency Driver MS-1401B
High Frequency Horn 60-degree constant-directivity
1600 Hz to 15 kHz
HF Network Y-1PD
Function DC blocking and damped
band-elimination filter
Enclosure 0.8 cu. ft. vented, multi-ply
Finnish birch plywood
Finish Black textured
Physical Dimensions 14" W x 14" H x 22 1⁄2" D
Weight 61 lbs (27.7 kg)
Protective Grill perforated steel screen, vinyl damped,
charcoal-grey foam covering
Connector Cannon EP-4 (male), EP-5 (male, Europe only)
Rigging (optional) Aircraft pan fittings, or 3⁄8"-16 or M10 x 1.5 nut plate
Meyer Sound Part Number 05051044.03 Revision A, November 1992
© Meyer Sound, 1985 - 1992. All rights reserved. This document may not be reproduced without permission.
Note 1:
Measured 1⁄2 meter
from center of cabinet
face, half-space condi-
tions, pink noise input,
network set to 16KPK,
smoothed to one-third
octave. Low frequency
response dependent on
load conditions.
Note 2:
Loudspeaker driven
with pink noise.