Meyer Sound UM-1 Manual Do Utilizador
Note 1:
Measured 1 meter on-axis,
half-space conditions,
pink noise input, in third-
octave bands.
Measured 1 meter on-axis,
half-space conditions,
pink noise input, in third-
octave bands.
Note 2:
Loudspeaker driven with
weighted noise.
Loudspeaker driven with
weighted noise.
Note 3:
“A”- weighted, unbalanced.
“A”- weighted, unbalanced.
UM-1C Specifications
Acoustical – UM-1C/M-1A System
Frequency Response
Frequency Response
1
70-18,000 Hz +4 dB
Maximum SPL
2
with amplifier rated at:
250 W/8 ohms/ch.
60 W/8 ohms/ch.
Continuous
125 dB
120 dB
Peak
135 dB
126 dB
HF Coverage, -6dB points
45 degrees symmetrical
UM-1C Loudspeaker
Transducers
Transducers
Low Frequency
MS-12 12-inch cone driver, 8 ohms
High Frequency
MS-1401B 1.4-inch throat driver, 16 ohms
High-Frequency Horn
45 degree constant-directivity
HF Network
Y-1PD
Function
DC blocking and passive filters with alternate connection
terminal to adjust VHF response (16k peak or flat)
terminal to adjust VHF response (16k peak or flat)
Enclosure
0.8 cu. ft. vented, multi-ply Finnish birch
Finish
Black textured
Protective Grill
Perforated steel screen, charcoal-grey foam covering
Connector
Cannon EP-4 male, EP-5 male (Europe only)
Rigging (optional)
Aircraft pan fittings or
3
⁄
8
"-16 nut plates
Physical Dimensions
14" W x 14" H x 22
1
⁄
2
" D
Weight
67 lbs. (30.4 kg)
M-1A Control Electronics Unit
Input Type
Input Type
Balanced (active), 47K ohms
Output Type
Active push-pull, will drive 600 ohms
Maximum Input/Output Level
Balanced
+26 dBu
Unbalanced
+20 dBu
Hum and Noise
3
<-90 dBV
Dynamic Range
120 dB
Sense Inputs
10k ohms true differential, opto-isolated
Electronic Crossover Frequency
1600 Hz
Low-Frequency Delay Type
Active all-pass
Driver Protection Circuitry
Low Frequency
RMS limiter
High Frequency
RMS limiter
VHF Peak limiter
VHF Peak limiter
Indicators
Sense, Hi and Lo
Green LEDs
Limit, Hi, Lo, and VHF
Red LEDs
Safe
Green LEDs
Power Supply, Positive and Negative
Green LEDs
Controls
Front Panel
Input level control, AC on/off switch
Preset Panel
VHF control, Lo Cut switch, Safe switch, VHF switch
Connectors
Balanced Inputs/Outputs
3-pin XLR (A-3), RTS
1
⁄
4
" phone jacks
Subwoofer Circuit Input
Unbalanced,
1
⁄
4
" phone jack
(inserts Lo Cut, disables Level control)
Sense Inputs
Banana jacks
Power
120/240V AC, 50/60 Hz (internally switchable)
Physical Dimensions
19" W x 1
3
⁄
4
" H x 7
3
⁄
4
" D Standard rack mount
Weight
8 lbs. (3.6 kg)