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

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