Reference R3 8″ Dual 2-ohm Subwoofer

RMS Power (watts) 500
Efficiency (1w/1m) 80.7
Voice Coil Configuration 2.0″ DVC 2Ω


Sometimes a woofer comes along that changes the game. The R3 is just that, it has a high roll surround for an extended excursion. With a 4-Layer voice coil and a gigantic motor structure, it can handle some serious authority. With incomparable sound quality, this woofer can get down and hang with just about any other woofer out there. Whether an SPL competitor or an SQ competitor this is a woofer that can do it all.

Reference R3 Woofers use fiberglass stranding woven together for ultimate strength and less elasticity. A heavy soaking in epoxy combined with sonic qualities of pulp paper backing process itself worth of any system.

  • Woven Fiberglass Composite Cone
  • 2.0″ 4-Layer Voice Coil
  • Extended Excursion Polyurethane Surround
  • Back Plate & T-Yoke Venting


RMS Power (watts) 500
Efficiency (1w/1m) 80.7
Voice Coil Configuration 2.5″ DVC 2Ω
Mounting Depth 5.25″
Optimum Sealed ft3 0.75
Optimum Ported ft3 1.25


Soundstream R3-8
Imp. (Ohm) D2
Re 2.2122
Fs (Hz) 39
Qes 1.3713
Qms 7.1915
Qts 1.1517
Le (mH) 0.9283
Diam 8
Vas (L) 18.392
BL 7.3081
Mms (g) 134.9398
Sen (db) 80.77
RMS 500
Mounting D 5 1/4″
CutOut Diam 7.8″


Recommended Enclosures
Sealed Opt .75 ft²
Ported Opt 1.25 ft²
Port WxL 4″ X 6.7″
F3 (Hz) 33


Owners Manual [PDF]