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

al-Class, Application Info, Design Files, h-12, H-15, h-208, h-5, h-8, h-Class, hm Monitors, hm-115, hs-20, hs-221, hs-221, hs-25, hs-28, hs-subs, Product Data, Support Data, VUEDrive July 2, 2018
a-8, Application Info, Design Files, Support Data January 17, 2019
Application Info, Manuals, Support Data, SystemVUE, VUEDrive January 14, 2020
Application Info, Support Data September 5, 2016
al-12, al-4, al-8, al-8SB, al-Class, Application Info, Design Files, Support Data July 23, 2016
al-12, al-4, al-8SB, al-Class, Application Info, Design Files, Support Data June 7, 2016
al-Class, Application Info, e-Class, h-Class, PR Reprint, Support Data, Technology July 2, 2018
Application Info, PR Reprint May 16, 2015
Application Info May 16, 2015
Application Info, Support Data May 17, 2015
Application Info May 16, 2015

is-12a Rear Amplifer