HPR181i
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| SPECIFICATIONS | 
HPR181i | 
| Configuration | 
18" powered subwoofer | 
| Transducer | 
18" cone transducer with 4" voice coil | 
Frequency Response (-3 dB) 1 Frequency Range (-10 dB) 1 | 
45 Hz - 95 Hz 39 Hz - 145 Hz | 
| Maximum SPL (1 meter) | 
134 dB peak | 
| Amplifier | 
| Power output | 
700W Class H | 
| Input impedance | 
22k balanced 11k unbalanced | 
| Controls | 
Gain Front LED On/Off Power Circuit breaker Phase | 
| Indicators | 
Power Signal Limit | 
| Cooling | 
Convection | 
| Amplifier protection | 
Thermal and output Power limiting | 
Current consumption at 120 VAC (1/8 power EIA noise) | 
2.5A | 
| Enclosure | 
Painted Birch plywood | 
| Finish | 
Black textured paint | 
| Grille | 
Powder coated 16 gauge steel | 
| Connectors | 
Balanced female XLR line level inputs x 2 (L+R) Balanced male XLR full range line level throughputs x 2 (L+R) Male XLR low-cut line level outputs x 2 (L+R) | 
| Dimensions | 
28.6" H x 23.5" W x 22.9" D (727mm x 597mm x 582mm) | 
| Net weight | 
127 lbs. / 58 kg | 
| Available Accessories | 
HPR COVER 181 HPR POLE 26 HPR POLE 31 |