is-12 & is-12a Single 12-inch Compact Subwoofer System


  • 12-inch transducer with rubber surround and 3-inch (75 mm) voice coil
  • 400 W/800 W long term/program power handling (is-12)
  • 400 W continuous power (is-12AU)
  • Usable response down to 38 Hz
  • Max long term output 118 dB SPL
  • High-density wood enclosure with durable textured finish


  • Ideal companion for i-Class full-range systems
  • Restaurants, cafes, Bars and clubs
  • FOH Monitor
  • Corporate facilities
  • Houses 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-12 and is-12AU vented subwoofers offers are the perfect companions for the i-Class full-range models. Both subwoofers utilize professional-grade drivers that incorporate large voice coils 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-12AU adds on-board 400 watts of class H amplification. The integrated DSP based front end provides amplifier limiting protection and a variable 80 to 200 Hz low pass. A variable, 18 dB per octave high-pass output allows easy satellite integration, while a phase switch ensures LF alignment. Large heat-sink surface 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 12-in subwoofer Powered Single 12-in subwoofer
Frequency Response (+- 3 dB) 45 – 200 Hz 45 – 200 Hz
Frequency Range (-10 dB) 38 – 800 Hz 38 – 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) 122 dB SPL 121 dB SPL
Max SPL Long Term (AVG SPL @1 band limited pink noise 6 dB crest factor)) 118 dB SPL 118 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 12”, paper cone, cloth surround, 3” (75 mm) voice coil, ferrite
Impedance 8 Ohms N/A
Connectors NL4 XLR/1/4in Combojack
Cabinet Material Multi-ply wood
Cabinet Surface Black polyurethane coating
Power Input (Mains) NA 120 or 230 Volt Auto Switching
Dimensions (H x W x D) 18.89 x 13.98 x 17.72 in (480 x 355 x 450 mm)
Net Weight 44.7 lbs (20.28 kg) 50.9 lbs (23.09 kg)
Shipping Weight 52.7 lbs (23.90 kg) 59.9 lbs (27.17 kg)

i-Class Downloads

a-15, a-Class, Product Data July 2, 2018

is-12a Rear Amplifer