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UPM-1 Specifications
Acoustical – UPM-1/P-1A
Frequency Response
1
Half space 60-20,000 Hz +4 dB
Free air 70-20,000 Hz
+4 dB
Maximum SPL
2
Continuous 108 dB
Peak 118 dB
Distribution Pattern (-6dB points)
Horizontal 80 degrees
Vertical 60 degrees
UPM-1 Loudspeaker
Driver Complement
Low-Frequency (2) MS-5 5-inch cone drivers, 8 ohms per driver
High-Frequency 2" x 5" horn-loaded piezoelectric
Passive Network
Function 3-way crossover and HF driver protection
Capacitor Type Polypropylene
Inductor Type Ferrite core
Cabinet Impedance 16 ohms
Enclosure 0.2 cu. ft. vented, multi-ply Finnish birch
Finish Black textured
Connector Cannon EP-4 or 3-pin XLR (male and female)
Protective Grill Expanded metal screen frame, vinyl damped,
charcoal-grey foam covering
Mounting Points
3
⁄8"-16 nut plates
Physical Dimensions 6
3
⁄4" W x 18
1
⁄8" H x 7
1
⁄8" D
Weight 16 lbs. (7.3 kg)
P-1A Control Electronics Unit
Input Type Balanced (active), 47k ohms
Output Type Push-pull (active), 200 ohms source impedance
Maximum Input/Output Level
3
Unbalanced >+20 dBu
Balanced >+26 dBu
Hum and Noise
4
<–90 dBV
Dynamic Range
5
>105 dB
Sense Input 10K ohms true differential, opto-isolated
Driver Protection Circuitry
Low Frequency RMS Limiter
High Frequency RMS and Peak Limiter
Indicators
Sense Green LED
Limit Red LED
Power Green LED
Controls Level Control, AC on/off switch, Lo Cut Switch
Connectors
Balanced Input/Output 3-pin XLR (A-3),
1
⁄4" RTS phone jacks
Sense Input 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 7 lbs. (3.1 kg)
Note 1:
Measured 1 meter on axis,
pink noise input, in third-
octave bands.
Note 2:
“A”-weighted noise input,
loudspeaker driven by
125␣watt (16 ohm rating)
mono amplifier.
Note 3:
1 kHz, 10k
Ω
load, < 0.1%
THD.
Note 4:
“A”-weighted.
Note 5:
Noise floor to maximum
output.