The center channel variation of the THIRTY. All the same features and specifications, but with a centered midrange/tweeter array.


  • Medium sized 4 driver, 3 way, multi-chambered acoustic suspension (sealed box) design. Can be floor, stand, cabinet or soffit mounted (can be wall mounted with optional brackets)
  • High efficiency design, allowing it to work with receivers and small amplifiers, as well as providing very high dynamics with larger amplifiers
  • Proprietary Force BalanceTM woofer alignment designed for high output and low distortion
  • Proprietary wool & pulp 5.25" midrange designed for smooth dynamics and high power handling
  • Proprietary 1" soft dome tweeter designed for broad dispersion and solid dynamics
  • Vertically symmetrical drivers
  • Dual 5 way binding posts for secure connection of high quality cables, single or bi-wired
  • Available as a finished speaker or as an easily assembled kit
  • Environmentally responsible construction utilizing formaldehyde-free MDF, bamboo fill and green finishing materials


  • Finished speaker dimensions: 32" x 11" x 10.5" (HxWxD)
  • Weight: 60 lbs (each)
  • Minimum Recommended Amplifier Power: 15 Watts RMS
  • Maximum Recommended Amplifier Power: 350 Watts RMS
  • Frequency Response: 38Hz-19,000Hz, +/-2.5dB
  • Nominal Impedance: 8 Ohms
  • Sensitivity: 90dB 2.83V@1m
  • Cabinet Construction: Heavily braced 3/4" Formaldehyde-free MDF
  • Tweeter detail: 1" fabric soft dome, neodymium magnet, large volume back chamber for low resonance, low profile faceplate for minimum diffraction and wide dispersion
  • Midrange detail: 5.25" coated wool and paper cone, glass reinforced anti-resonant polymer basket, butyl rubber surround, low loss, linear CONEX-cotton blended spider, OHFC high purity copper voice coil wire, XBL motor structure, copper shorting ring embedded in the top plate, aluminum shorting ring embedded inside the magnet
  • Woofer detail: Force BalanceTM alignment utilizing proprietary 8" and 10" woofers. Coated paper cones, steel baskets, butyl rubber surrounds, low loss, linear CONEX-cotton blended spiders, OHFC high purity copper voice coil wire, and overhung motor structures
  • Crossover detail: Proprietary symmetrical second order (Linkwitz-Riley) 12dB per octave electronic (18dB per octave acoustic) network

* These are currently special order. Please contact us for information.