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Phoenix Gold MX Series 12" Dual 4-Ohm 300W Slim Subwoofer

Model #: MX 12D4
Phoenix Gold
At a Glance
MX12D4 is Phoenix Gold’s 12” dual voice coil 4-Ohm slimline subwoofer. Packing 300 watts RMS power, delivering tight, clean, articulate, goose bump inducing bass; jam packed with every musical detail.
Available in Store Only
$229.99Save $NaN

Get to know this product.

Engineered to overcome the hurdle of lack space for BIG BASS in trucks and the compact vehicle market. The MX subwoofers are here to deliver outstanding performance to the most demanding listener and keep the music going. The MX “shallow mount” subwoofers heavy duty construction starts with the Phoeniroll Surround that promotes an exact linear range of motion within the 22mm of peak-to-peak excursion. Followed by a light yet ridged glass fiber-reinforced cone, matched with an oversized sophisticated motor structure consisting of a high temperature Torriform voice coils made of pure OFC cooper coupled with KlaraForm Vented Kapton former. Followed by a progressive rolled spider with rugged woven tinsel leads, resulting in a subwoofer that is optimized for maintaining precise control, and maximum reliability while being pushed to the limit!

  • 12" Shallow Subwoofer
  • 2" 2 Ohm DVC KSV Voice Coil
  • RMS Wattage: 300W
  • Peak Wattage: 600W
  • 11mm of Linear Excursion
  • High Excursion CAE/CAD Motor Design
  • KlaraForm Vented Kapton Former technology reduces distortion by reducing heat and resistance
  • Glass Fiber Reinforced Cone for Increased Low End
  • Phoeniroll Surround Technology promotes linear motion
  • Torriform Voice Coil Technology: Effectively dissipates heat and minimizes distortion
  • Nickel Plated 12 Gauge Speaker Terminal
  • Optimized for Sealed Enclosures
  • Powder Coated Anti-Resonant Steel Basket
Useful Documents


T/S ParameterMX12D4
Re (Dcr)3.4 x 2
FS (Hz)38.07
Sd (SqM)0.051
BL TM8.25
Vas (cu L)37.638
Cms (uM/N)101.623
Mms (gms)171.982
Impedance (Ohm)Dual 2 Ohm
Voice Coil Diameter2in - 50mm
RMS Power Handling300 watts
PEAK Power Handling600 watts
Xmax (Linear)11mm
Driver Displacement (cf)0.04
Mounting Diameter11.10in - 282mm
Mounting Depth4.25in - 107mm

Misc. Specs

Peak Power Rating (Watts)600
RMS Power Handling (Watts)300
Shallow MountNo
WarningProposition 65 Warning for California Residents