Loyola Enterprises

A veteran and minority owned SDB Certified Business.


FRi+ 181S

757.498.6118 Ext - 109FRi Plus 181S - Call for pricing - 18-inch 400 watt subwoofer


PDFFRi Plus 181S Specifications (pdf)

PDFFRi Series User Manual (pdf)

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.


  • 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

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)
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or