FRi+ 181S
 FRi Plus 181S - Call for pricing - 18-inch 400 watt subwoofer
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The FRi+181 is designed for applications where extended low frequency response is desired in an FRi/FRi+ installation. It is a trapezoidal enclosure identical in height, appearance and suspension to the FRi/FRi+ full-range systems. An 18" LF transducer is centrally mounted in a large optimally-vented enclosure for efficient deep-bass response that requires only minimal equalization. These professional fixed install speakers deliver a broad range of performance options including multiple rotatable horn patterns, matching subwoofer, full-range systems with easily switchable passive or biamp operation, and EV’s world renowned transducer technology for response that is smooth and linear. The FRi/FRi+ Series is an economical and flexible solution for the most demanding installations.
Same height full-range and sub-woofer systems allow the installer to construct arrays covering the most demanding acoustical environments while maintaining an aesthetic and uniform installation. The structural integrity of the FRi/FRi+ cabinets allows for vertical arrays up to 2 boxes in height. All FRi/FRi+ systems are available in weather resistant black Futura, white, and unfinished. Performance may be further enhanced by bi-amping or tri-amping with the Electro-Voice Dx-38 Digital Sound System Processor.
Features
- Vented 18" Subwoofer Speaker System
- DL18MT Low Frequency Driver
- Unequalized flat response to 42 Hz
- Usable bass output to 32 Hz
- 16 threaded suspension points
- Available in black, white and unfinished
- Arrays with FRi/FRi+ full-range systems
- High sensitivity, 100 dB below 100 Hz
- Paintable Enclosure
- Barrier Strips (Dual) input connections
| Specifications |
| Frequency Response (-3dB) | 37 Hz–170 Hz | Power Handling | 400 W cont. / 800 W prog. / 1600 W peak |
| Frequency Range (-10dB) | 28 Hz–170 Hz | Enclosure Tuning | 36 Hz |
| Sensitivity 1 W/1 m | 100 dB | Crossover Frequency | 80 Hz |
| Max SPL/ 1m (calc); half space | 132 dB | Rec. High-Pass Freq. | 32 Hz (12dB/oct.) |
| Coverage (HxV) | Omnidirectional | Nominal Impedance | 8 Ω |
| Connectors | Barrier strips | Transducers (LF) | DL18mt |
| Enclosure Material | 13-ply Birch plywood | Grille | 16 GA steel |
| Environmental Spec | IEC 529 IP24 | Suspension | 16 x 3/8" Threaded Points |
| Dimensions (HxWxD) | 78.7 x 71.9 x 66.0 cm
(31.0" x 28.3" x 26.0") | Weight | 45.5 kg (100 lbs) |
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FRi Plus 181S Specifications (pdf)