Loyola Enterprises

A veteran and minority owned SDB Certified Business.


SP 218

757.498.6118 Ext - 109SP 218 - Call for pricing - Dual 18-inch 2400 watt - 00586570


PDFSP 218 Specifications (pdf)

The SP 218 is a subwoofer designed to enhance the low-end tin SP Series or other full-range speaker systems. Other uses include bass guitar, keyboard and drum monitoring.

The enclosure is constructed of aspen hardwood plywood with internal bracing covered in heavy-duty, textured Hammertex™ covering. A powder-coated, perforated steel grille covers the front of the enclosure. Recessed steel handles on either side provide portability. A pole guide for support of a pole-mounted, high-pass enclosure is provided on one side of the SP 218. Rubber feet are provided on the opposite side for horizontal use. Rubber feet and corner casters on the bottom and a corner handle on top make moving the enclosure an easy, one-person operation.

Inputs are at the rear of the enclosure and consist of two ¼" jacks, one four-pin Neutrik® Speakon® non-switching jack and one Neutrik Speakon switching jack. The enclosure input is configurable, with the default being 4 ohms with both drivers in parallel when using the parallel inputs. A dual-woofer 2 x 8 ohm configuration is available through the switching Neutrik jack, which disconnects the 4 ohm inputs and provides separate inputs to the woofers when used. This ingenious input design provides maximum flexibility for single- or dual-amplifier operation, without having to manually rewire the enclosure.

This low frequency enclosure is comprised of two 18" Pro Rider® subwoofer drivers in a vented alignment. The Pro Rider driver delivers superior performance due to its advanced cooling system, large 4" voice coil with edge-wound aluminum wire and Kevlar® composite cone. This design provides strong bass extension and high power handling to complement a full-range sound system.

As the SP 218 does not include a passive subwoofer crossover, input should be electronically filtered for subwoofer applications. In addition, for high power operation, a high-pass filter set at 35 to 40 Hz and 12 to 24 dB Butterworth should be used to improve performance and reliability.


  • Two 18" Pro Rider® Black Widow® woofers with Kevlar®/carbon fiber cones and field-replaceable baskets, flat-wound 4" voice coils, and cast-frame baskets
  • One four-pin Neutrik® Speakon® non-switching jack and one switching jack, plus two ¼" jack inputs
  • A pole mount is included for support of a high-pass enclosure
  • Aspen hardwood enclosure
  • Hammertex durable covering material
  • New grille
  • Mounted casters for easy transport

Architectural and Engineering Specifications

The loudspeaker system shall have an operating bandwidth of 51 Hz to 300 Hz. The nominal output level shall be 99 dB when measured at a distance of one meter with an input of one watt. The nominal impedance shall be 4.0 ohms or 2 x 8 ohms, depending on configuration. The maximum continuous power handling shall be 1,200 watts, maximum program power of 2,400 watts, a peak power input of at least 4,800 watts and a minimum amplifier headroom of 3 dB. The outside dimensions shall be 50.21 inches high by 21.55 inches wide by 29.88 inches deep. The weight shall be 147 pounds. The loudspeaker system shall be a Peavey model SP 218.

Frequency Response (±3dB) 51 Hz–300 Hz Power Handling 1200 W cont. / 2400 W prog. / 4800 W peak
Frequency Range (-10dB) 40 Hz–300 Hz Box Tuning Frequency 36 Hz
Sensitivity 1 W/1 m 99 dB Crossover Frequency 90 Hz
Max SPL/ 1m (calc) 136 dB Nominal Impedance 4 Ω
Coverage (HxV) Omnidirectional Minimum Impedance 3.3 Ω
Enclosure Material Aspen Plywood w/ Hammertex™ finish Input Connections (2) ¼" phone, (1) switching 4-pin Neutrik and (1) non-switching 4-pin Neutrik
Transducers (LF) Pro Rider 1808-8 ALCP
Dimensions (HxWxD) 127.5 x 54.7 x 75.9 cm
(50.2" x 21.6" x 29.9")
Weight 66.7 kg (147 lbs)
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or