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Specifications, HPR151i and HPR181i
HPR151i
HPR181i
Frequency Response, -3dB
51-105 Hz
45-95 Hz
Frequency Range, -10dB
43-145 Hz
39-145 Hz
Maximum Peak SPL
133dB
134dB
Nominal coverage, H x V
Not applicable (N/A)
Not applicable (N/A)
Transducer Description
15” (381mm) transducer with 3” (76mm) voice coil
18” (457mm) transducer with 4” (102mm) voice coil
Amp Power
700 Watts
700 Watts
Input Sensitivity
0.775 V
rms
(+0dBu)
0.775 V
rms
(+0dBu)
Input Headroom/Clipping
10 V
rms
(+22.2dBu)
10 V
rms
(+22.2dBu)
Input Connectors/Impedance
Two XLR female, 22k Ohm, balanced, left and right (L+R) inputs (11k Ohms unbalanced)
Output Connectors
Four XLR male: two wired in parallel with Input connector (full range), two post-100 Hz low-cut filters
Controls, Indicators, and
Gain control, Polarity switch (normal/reverse), Front LED on/off switch, Limit/Clip (red LED), Signal presence (green LED), AC Power (blue LED)
Adjustments
AC Power switch, AC circuit breaker
Protection, Agency certs.
Thermal limiting, On/Off muting, power limiting, DC protection, short circuit protection, ultrasonic protection, RF protection, UL/CE listed
AC Power Requirements
AC Power Connector and Cordset
Factory supplied IEC cordset: 9’ (3m) #18AWG 120V North American or European 230V cordset
Dimensions
25.6” (651mm) x 22” (559mm) x 20.7” (525mm)
28.6” (727mm) x 23.5” (597mm) x 22.9” (582mm)
Weight
98 lb/44.5 kg
127 lb/57.6 kg
Finish and Grill
Wear-resistant textured paint finish with powder-coated perforated steel grill
Notes:
1- Maximum Peak SPL: Calculated by adding the loudspeaker’s sensitivity (1W at 1m) to the peak power (dBw) of the amplifier provided.
2- Directivity Index (DI): Difference between on-axis SPL and average SPL (considering all axes) for the specified coverage range. DI= 10 log Q
3- Directivity Factor (Q): Directivity index expressed as a power ratio Q=10 exp DI/10
4- Amplifier Power: The maximum sustained power at less than 1% clipping, averaged over the intended frequency range,
5- Input Sensitivity: The sine-wave input voltage required to reach amplifier clipping, measured within the frequency range used to determine Maximum Peak SPL, with the gain on “normal” and no gain reduction due to
limiting.
6- Input Headroom/Clipping: Maximum input voltage.
7- Input Connector/Impedance: RF shunt capacitance should not reduce impedance by more than 30% at 20k Hz.
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