SUMMOXL124 - 12" 1500 Watts RMS Dual 4 Ohm Subwoofer

Availability: In Stock & Ready To Ship!
$ 349.95


How it is possible to get “MO” out of a Massive Audio CEA 2031 Certified “SUMMO” subwoofer? All you got a do is just Double Stack 250 Oz Strontium Magnets on a newly designed light weight ultra-strong cast aluminum basket. Use dual 4 Ohm Black 3” anodized VC formers with Kevlar Spunlace suspended into a custom Black Anodized 1 piece milled pole-plate. (This helps increase the concentration of the magnet field) Now just add oversized dual Poly Nomex Spiders. Bond them to Kevlar fiber reinforced Non-Pressed Paper Cones that have been stitched in “Red” onto the oversized surround. Throw in some 10 gage speaker cable that’s hard wired to the tinsel leads and just bolt everything together! That makes the SUMMO 104 "XL", 124 “XL” & the 154 “XL” Extra: “Large, Low and Loud”


  • Heavy Duty, Rugged Industrial Textured Cast Aluminum Basket
  • 250 oz High Energy Double Stack Strontium Magnet Structure
  • Dual Impedance Black Anodized Voice Coil Former with Kevlar Spunlace
  • Kevlar Fiber Reinforced Non-Pressed Paper Cone with Industrial Textured Finish
  • Red Stitched Edge to the Cone for Added Strength
  • Over Sized Mirror Image Dual Poly/ Nomex Spiders
  • Black Anodized One Piece Pole-Plate for Added Motor Force
  • Heavy Duty Direct Input Wires Connection To Voice Coils
  • Reinforced Fiberglass Woven Dustcap for High Power Applications
  • Custom Tooled Rubber Gasket and Magnet Boot


Size 12"
Peak Watts 3000
RMS Watts 1500
Cone Non-Pressed Paper
Voice Coil 3" Dual 4 Ohm
Surround EROM Foam with Red Stitching
Magnet 250oz Triple Stacked
Terminals Heavy Duty Direct Input Wires Connection
Basket Die Cast
Tinsel Leads Heavy Duty Triple
X-Max 13.5mm
SPL 92.1dB
Ported Box 14"H x 16"D x 18"W
Sealed Box 1.7 ft3

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Ask a Question
  • What is the mounting Depth for this subwoofer

    The mounting depth is 7.48" 

  • What gage wire is coming off the back of the summoxl124? Is it 10 or 8 gage?

    SUMMO XL 124 has 10 AWG  100 % high-grade, copper wires

  • How does the sumo-xl 124 compared to the Sumo 124 What's the difference Can they be paired

    The SUMMOXL and orginal SUMMO are similar in power and look athough that is about it. The SUMMOXL is an upgrade on parts and materials. You would not be able to connect them together in the same box as they have a different Fs. Treat them as two completely different subwoofers.