Massive Audio SUMMO64S

$99.99 +FL Tax= $106.49

6.5″ 300W RMS 4Ohm 600W SVC Subwoofer

Only 4 left in stock



In the ancient Japanese sport of SUMO the rules are simple. When the Gyoji waves his fan; push the other guy out of a big circle. Massive Audio created the “SUMMO” line of subwoofers with the same goal in mind. Summo Series subwoofers play so low and with such a deep center of force that the competition cannot help but to bow out gracefully.

Let there be no doubt that with Massive Audio you will be the “King of the Ring.”


  • Heavy Duty, Rugged Industrial Textured Cast Aluminum Basket
  • Kevlar Fiber Enhanced Non-Pressed Paper Cone with Textured Paint Finish
  • Red Stitched Edge to the Cone for Added Strength
  • 1.5″ 4-Layer Hi-Temp Voice Coil 
  • Fiberglass Woven Dust Cap
  • Double Stacked 48oz High Energy Magnets 
  • Enhanced Cooling T-yoke Design with Black Anodized Finish
  • Customized Rubber Gasket and Magnet Boot
  • 8 Gauge Power Cable with Direct Lead Connection
  • Triple Black Poly Cotton Spiders with Mirror Image Layout


Size 6″
Peak Watts 600
RMS Watts 300
Cone Non-Pressed Paper
Voice Coil 1.5″ Single 4 Ohm
Surround Red Stitching
Magnet 48oz Double Stacked
Terminals Heavy Duty Direct Input Wires Connection
Basket Rugged Industrial Textured Cast 
Tinsel Leads Heavy Duty Triple
X-Max (2-Way) 8mm
SPL 85dB
Ported Box 8″H x 9″D x 10″W
Sealed Box 0.41 ft3

Additional information

Weight 10 lbs
Dimensions 9 × 9 × 7 in

Massive Audio

Audio Style


Magnet Type


Speaker Size



Single 4 Ohm


300-499W, 500-699W

Massive Audio Series


Unit Quantity

Sold Individually


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