Dual 8" inwall passive subwoofer with long excursion graphite woofers and a power handling capacity of 200 watts. Fits in a standard 2x4 stud bay. Designed to be used with the Proficient M3 Amp/Crossover.

Subwoofers. We love what they do for movies and music but hate the way they look. Proficient has the answer: the IWS85 in-wall subwoofer. The IWS85 mounts flush in a 3½-inch-deep wall cavity, just like an ordinary in-wall speaker. The dual slim-profile 8-inch drivers have the equivalent air-moving power of an 11-inch driver.

To power the IWS85, use our M3 subwoofer amp. The M3 goes in your equipment rack and connects with in-wall speaker cable. No matter how you set it up, the IWS85's 30 Hz response and 200-watt power handling ensure you'll get great bass. Includes thin-bezel grilles held by neodymium magnets.


  • Passive 8" Inwall Sub
  • Woofer: Two 8"Long Excursion Graphite Cone
  • Power Handling: 200 Watts RMS
  • Frequency ResponseL 30Hz - 120Hz
  • Dimensions: H 20 5/16" x W 11 5/8" X D 3 3/4"
  • Wall Cut Out: H 19 1/8" X W 10 5/8"
  • Replaces IWS82 Inwall Sub
  • Includes Thin-Bezel Grille held by Neo Magnets