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APPENDIX B
APPENDIX B
UPJ-1P SPECIFICATIONS
ACOUSTICAL
Operating frequency range 55 Hz - 20 kHz
Note: Recommended maximum operating frequency range. Response depends upon
loading conditions and room acoustics.
Free eld frequency
response
66 Hz - 18 kHz ±4 dB
Note: Measured with 1/3 octave frequency resolution at 4 meters.
Phase response ±45° 750 Hz to 18 kHz
Maximum peak SPL 128 dB
Note: Measured with music at 1 meter.
Dynamic range >110 dB
Coverage 80° x 50°
Note: The UPJ horn can be rotated to provide an 80° x 50° coverage pattern in either the
horizontal or vertical plane.
Acoustical crossover 2 kHz
Note: At this frequency, the transducers produce equal sound pressure levels.
TRANSDUCERS
Low frequency One 10" cone driver with neodymium magnet
Nominal impedance: 4 Ω
Voice coil size: 2"
Power-handling capability: 400 W (AES)
Note: Power handling is measured under AES standard conditions: transducer driven
continuously for two hours with band limited noise signal having a 6 dB peak-average ratio.
High frequency One 3" compression driver
Nominal impedance: 16 Ω
Voice coil size: 3"
Diaphragm size: 3"
Exit size: 0.75"
Power-handling capability: 100 W (AES)
Note: Power handling is measured under AES standard conditions: transducer driven
continuously for two hours with band limited noise signal having a 6 dB peak-average ratio.
Note: The driver is coupled to an 80° x 50° constant-directivity horn.
AUDIO INPUT
Type Differential, electronically balanced
Max. common mode range ±15 V DC, clamped to earth for voltage transient protection
Connectors Female XLR input with male XLR loop output
Input impedance 10 kΩ differential between pins 2 and 3
Wiring Pin 1: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network to provide virtual
ground lift at audio frequencies
Pin 2: Signal +
Pin 3: Signal -
Case: Earth ground and chassis
DC Blocking Differential DC blocking on input up to max. common mode voltage
CMRR >50 dB, typically 80 dB (50 Hz – 500 Hz)
RF lter Common mode: 425 kHz; Differential mode: 142 kHz
TIM lter <80 kHz, integral to signal processing
Nominal input sensitivity 0 dBV (1 V rms, 1.4 V pk) continuous average is typically the onset of TPL limiting for noise
and music.
