MB Quart Polaris Off-Road Grade Audio

Reference Subwoofers

Flexible Installations
MB Quart Reference Subwoofers are versatile. And they deliver musical bass frequencies with maxximum power to drive your music. Standard depth Reference subwoofers are engineered for a wide variety of enclosures; both sealed and vented.

Click Here to view/download the RWM252/RWM254/RWM302/RWM304 Manual.

Reference Subwoofers
Unique Thermal Formed Cone
A Thermal Formed Polypropylene Cone is designed to keep the cone rigid while developing deep bass and high SPL.

Deep Drawn Stamped Steel
Reference Subwoofers are built on a heavy duty Deep Drawn Stamped Steel basket for increased rigidity and reduced flex in high SPL applications.

Dual Mirror Image Spiders
The vented voice coil former is secured to a Dual Mirror Image treated spider design for very linear excursion in the voice coil gap.

Large Voice Coils
Reference subwoofers are designed with a 2”, 2.5” and 3” Dual 2-ohm or Dual 4-ohm voice coil on a vented aluminum former to dissipate maxximum heat.

Spring Loaded Terminals
All Reference subwoofers utilize spring loaded terminals for positive and negative speaker connections. Terminals are nickel-plated brass in a satin finish.

Reference Subwoofers

  • Skeleton cone and injection molded dust cap
  • Under-mount surround for increased cone area
  • Heavy gauge deep drawn stamped frame
  • Vented aluminum voice coil formers
  • Edge wound copper voice coils
  • 2” coil with 350 WRMS / 700 peak power handling
  • Treated dual spiders on tooled ABS spider landing

RWM304 Reference Subwoofer

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Availability: Discontinued

Part#: RWM304


350W 12" Dual 4 ohm Subwoofer

Coming Soon!


Part #: RWM304 | SKU: 806576220763 | Category: Reference Subwoofers
350W 12" Reference Dual 4 ohm Subwoofer.

Coming Soon!


Part #: RWM304 | SKU: 806576220763 | Category: Reference Subwoofers
  • Power Handling RMS
    350 watts
  • Power Handling Peak
    700 watts
  • Impedance
    4 ohms
  • Sensitivity (1 watt / 1 meter)
    83.1 dB
  • Frequency Response +/- 10dB
    30-250 Hz
  • Resonance Frequency (Fs)
    29.53 Hz
  • Cut-Out Ø
  • Top-mount depth


Part #: RWM304 | SKU: 806576220763 | Category: Reference Subwoofers
  • Injection molded polypropylene cone
  • Heavy duty textured powder coat finish
  • Deep drawn heavy gauge stamped steel basket
  • Dual mirror image treated spiders
  • Spring loaded terminals
  • Low profile subwoofer design
  • 2" High temp aluminum voice coil
  • Red nomex spider
  • Anti-resonant magnet cover


Part #: RWM304 | SKU: 806576220763 | Category: Reference Subwoofers
More info in development & coming soon!


Part #: RWM304 | SKU: 806576220763 | Category: Reference Subwoofers
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Maxxsonics Factory Specials
Maxxsonics Factory Specials