MB Quart Polaris Off-Road Grade Audio

Onyx Subwoofers

Refined Bass
Like the Onyx line of speakers, the Onyx line of Subwoofers from MB Quart are the perfect first step into the High End sound of MB Quart. The Onyx subwoofers feature a thermal formed polypropylene cone and 1.5” aluminum voice coil for strong musical bass. They also feature the same style deep drawn heavy gauge stamped steel basket as Reference along with treated spiders and spring loaded wiring terminals to make installation easy. Match the Onyx subwoofers with Onyx speakers and power them with any of the MB Quart Onyx amplifiers. Onyx subwoofers perform best in vented enclosures.

Click Here to view/download the OWC254/OWC304 Manual.

Onyx Subwoofers
Unique Thermal Formed Cone
A Thermal Formed Polypropylene Cone is designed to keep the cone rigid while developing deep bass. The fine red line defines the Onyx series.

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

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

Built for Power
Designed to handle big power, the Onyx subwoofers are engineered with large motor assembly and handle 350 watts for either the 10” or the 12”.

Voice Coil
Onyx subwoofers are engineered with a 1.5” Dual 4-ohm voice coil on a vented aluminum former to dissipate maxximum heat.

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

Onyx Subwoofers

  • Injection molded cone and 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
  • 1.5” coil with 175 WRMS / 350 peak power handling
  • Treated spiders on tooled ABS spider landing

OWC254 Onyx Subwoofer

« Previous Next »

More Views


Be the first to review this product

Availability: Discontinued

Part#: OWC254


150W 10" Dual 4 ohm Subwoofer

Coming Soon!


Part #: OWC254 | SKU: 806576220725 | Category: Onyx Subwoofers
150W 10" Onyx Dual 4 ohm Subwoofer.

Coming Soon!


Part #: OWC254 | SKU: 806576220725 | Category: Onyx Subwoofers
  • Power Handling RMS
    175 watts
  • Power Handling Peak
    350 watts
  • Impedance
    4 ohms
  • Sensitivity (1 watt / 1 meter)
    84 dB
  • Frequency Response +/- 10dB
    35-250 Hz
  • Resonance Frequency (Fs)
    31 Hz
  • Cut-Out Ø
  • Top-mount depth


Part #: OWC254 | SKU: 806576220725 | Category: Onyx Subwoofers
  • Injection molded polypropylene cone
  • UV Resistant butyl rubber surround
  • Deep drawn heavy gauge stamped steel basket
  • Heavy duty textured powder coat finish
  • Red treated Nomex spiders
  • Push & Insert Style speaker terminals
  • Anti-resonant magnet cover
  • 1.5" High temperature aluminum voice coil
  • Heat-dispersing vented pole plate


Part #: OWC254 | SKU: 806576220725 | Category: Onyx Subwoofers
More info in development & coming soon!


Part #: OWC254 | SKU: 806576220725 | Category: Onyx Subwoofers
Files & Manuals

Write Your Own Review

Only registered users can write reviews. Please, log in or register

Maxxsonics Factory Specials
Maxxsonics Factory Specials