is-15 & is-15a High Output Installation Subwoofers


is-15 & is -15a Features

  • 15-inch transducer with rubber surround and 3-inch (75 mm) voice coil
  • 400 W/800 W long term/program power handling (IS-15)
  • 400 W continuous power (IS-15a)
  • Usable response down to 35 Hz
  • Max long term output 128 dB
  • High-density wood enclosure with durable textured finish


  • Ideal companion for I Class full-range systems
  • Restaurants and cafes
  • Bars and clubs
  • Corporate facilities
  • 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.

For systems requiring greater LF extension, the is-15 and is-15a vented subwoofer are the perfect companions for the i-Class full-range models. Both subwoofers combine precision, low-pass crossovers with a professional-grade driver that incorporates a large, 3-inch voice coil for increased power handling and decreased power compression. Optimally tuned ports work in concert with the direct radiating driver to achieve a perfect balance of impact and definition.

The is-115a’s onboard class A/B amplification produces 400 watts continuous power output. A variable, 18 dB per Octave high-pass output allows easy satellite integration, while a phase switch ensures perfect LF alignment and staging. Large heat-sinks and efficient amplifier design eliminate the need for noisy cooling fans.

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.



DESCRIPTION Passive Single 15-in subwoofer Powered Single 15-in subwoofer
Frequency Response (+- 3 dB) 35 – 400 Hz 35 – 200 Hz
Frequency Range (-10 dB) 29- 1500 Hz 33 – 280 Hz
Sensitivity (1 W/1 m) 96 dB 96 dB
Power Handling Long Term(Continuous Power Output for powered Versions) 400 watts 400 watts
Power Handling Program 800 watts N/A
Max Peak SPL(band limited pink noise 6 dB crest factor) 128 dB SPL 125 dB SPL
Max SPL Long Term (AVG SPL @1 band limited pink noise 6 dB crest factor) 122 dB SPL 122 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 15”, paper cone, cloth surround, 3” (75 mm) voice coil, ferrite, 18 mm winding, 10 mm gap height,
Impedance 8 Ohms N/A
Connectors NL4 XLR/1/4in Combojack
Cabinet Material Multi-ply wood
Cabinet Surface Black polyurethane coating
Dimensions (H x W x D) 22.44 x 18.9 x 25 in (570 x 480 x 635 mm)
Weight Net: 74 lbs / 34 kg Net: 82 lbs / 37 kg

i-Class Downloads

al-Class, e-Class, hm Monitors, hm-112, hm-115, hm-212, Manuals, Product Data, Software, Support Data, SystemVUE, VUEDrive April 12, 2019
Design Files, EASE GLL FIles, Manuals, Software, Support Data November 25, 2018
Design Files, EASE GLL FIles, Software, Support Data November 25, 2018
Manuals, Software, Support Data, SystemVUE, VUEDrive April 12, 2019
Software, SystemVUE December 22, 2016
Software, SystemVUE December 22, 2016
Software, SystemVUE December 22, 2016
Software May 11, 2016
datasheets-chinese, Product Data, Software May 11, 2016
Manuals, Software, Support Data February 14, 2017
Design Files, Software June 13, 2015
Design Files, Manuals, Software June 13, 2015
Software October 17, 2015