is-26 & is-26a Compact Surface-Mount Subwoofer Systems


  • Dual 6.5inch driver with rubber surround
  • (38 mm) voice coils
  • 220 W/400 W long term/program power handling (IS-26)
  • 220 W continuous power (IS-26a)
  • Usable response down to 48 Hz
  • Max long term output 118 dB SPL
  • High-density wood enclosure with durable textured finish
  • Integrated hanging points


  • Ideal companion for I Class full-range systems
  • Restaurants and cafes
  • Bars and clubs
  • Corporate facilities and boardrooms
  • House of worship
  • Retail outlets
  • Airports

i-Class systems are designed for AV contractors seeking a high-performance alternative to plastic box loudspeakers. By combining professional-grade components and rugged wood enclosures, i-Class models deliver sonic performance that far exceeds their competition.

The compact is-26 and is-26a subwoofers are the perfect low-frequency companions for music and paging systems in retail stores, cafes, leisure facilities, sports clubs, or any environment where high-fidelity audio and minimal visual impact are desired.
The is-26 contains two, professional-grade 6.5-inch transducers that feature high-quality rubber surrounds and large, 1.5-inch voice coils for enhanced bass performance. Both transducers are mated to a precision crossover and housed in a robust, high-density wood enclosure with integrated hanging points. Optimally tuned ports work in concert with the direct radiating transducers to deliver an exceptional output-to-size ratio of 95 db sensitivity and 118 db of SPL.

The is-26a adds an onboard, 220 watt amplifier that features a variable, low-pass (80 Hz – 200 Hz) attenuator, articulated gain control, and an XLR loop-though output for easy integration with satellites.

Both models feature robust, multi-ply wood enclosures with a rugged industrial-grade coating. The cabinet front features a protective steel grill with a water resistant powder coating and an acoustically transparent filter medium bonded to its back surface.


DESCRIPTION Passive compact surface-mount subwoofer system Powered compact surface-mount subwoofer system
Frequency Response (+- 3 dB) 48 – 400 Hz 48 – 200 Hz
Frequency Range (-10 dB) 48-900 Hz 44 – 250 Hz
Sensitivity (1 W/1 m) 95 dB 95 dB
Power Handling Long Term(Continuous Power Output for powered Versions) 220 watts 220 watts
Power Handling Program 440 watts N/A
Max Peak SPL(band limited pink noise 6 dB crest factor) 118 dB SPL 118 dB SPL
Max SPL Long Term (AVG SPL @1 band limited pink noise 6 dB crest factor)) 112 dB SPL 112 dB SPL
Coverage Horizontal 360 degrees – 6 dB 360 degrees – 6 dB
Coverage Vertical 360 degrees – 6 dB 360 degrees – 6 dB
LF Driver Description 6.5”, paper cone, rubber surround, ferrite magnet, 1.5” (38 mm) voice coil
Impedance 4 Ohms N/A
Connectors Phoenix Type Connector and 2X NL4 Neutrik Speakon XLR/1/4in Combojack
Cabinet Material High density wood composite
Cabinet Surface Black polyurethane coating
Dimensions (H x W x D) 8.66 x 23.03 x 13.78 in (220 x 585 x 350 mm)
Weight Net: 22.5 lbs / 10.2 kg Net: 22.5 lbs / 10.2 kg

i-Class Downloads

I-8, i-Class, Product Data January 17, 2019



Input Panels 

is-26 Rear Panel


is-26 Rear Panel