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Black 12-inch shallow car subwoofer with single 4-ohm voice coil

MTX

MTX 3512-04S 12" 300W RMS 4 Ohm Shallow Car Subwoofer

SKU CH-VT9X-TN7AX

A 12-inch shallow-mount car subwoofer with 300 W RMS power handling and a single 4-ohm voice coil

  • TypeSubwoofers
  • Voice CoilSingle
  • Peak Power600 Watts
  • RMS Power300 Watts
  • Impedance4 Ohm
  • ColorBlack
  • Shallow 12" design fits tight vehicle spaces
  • 300W RMS power handles sustained bass output
  • Single 4 Ohm voice coil simplifies amplifier matching
  • Inverted Apex surround increases cone area for higher SPL
  • Spider plateau venting provides mechanical cooling during extended play

Shallow-mount 12-inch subwoofer for tight spaces

The MTX 3512-04S is a 12-inch shallow car subwoofer built for vehicles with limited enclosure depth. Its slim profile fits behind pickup truck seats or in sports-car trunks without sacrificing low-frequency output. The single 4-ohm voice coil simplifies amplifier matching for daily-driver systems.

Check enclosure type and amplifier match

This model is optimised for sealed enclosures only; ported boxes are not recommended. Verify your amplifier can deliver around 300 watts RMS into a 4-ohm load to avoid under-powering or overheating the voice coil. Confirm the available mounting depth in your vehicle exceeds the subwoofer’s shallow-mount dimension.

Upgrade from factory bass or entry-level drivers

Replaces weak OEM subwoofers or basic aftermarket units that lack SPL and control in small cabinets. The inverted Apex surround and progressive suspension increase cone area and reduce distortion, making the jump worthwhile when you need louder, cleaner bass from a sealed box that must stay compact.

Highlights

  • Shallow 12" design fits tight vehicle spaces
  • 300W RMS power handles sustained bass output
  • Single 4 Ohm voice coil simplifies amplifier matching
  • Inverted Apex surround increases cone area for higher SPL
  • Spider plateau venting provides mechanical cooling during extended play

Specifications

BrandMTX Mobile Audio
TypeSubwoofers
Voice CoilSingle
Peak Power600 Watts
RMS Power300 Watts
Impedance4 Ohm
ColorBlack

Questions about this item

Does the MTX 3512-04S come with an enclosure or wiring, or must I buy them separately?

The subwoofer is sold as the driver only; a sealed enclosure and speaker wire must be purchased separately to complete the installation.

The listing shows 300 W RMS and 600 W peak — which figure should I match my amplifier to?

Match the amplifier RMS output to the 300 W RMS rating; the 600 W peak figure only represents short-term musical peaks.

How does the shallow-mount design affect the 300 W RMS output in a real sealed box?

The shallow profile fits tight spaces while the inverted Apex surround and progressive suspension maintain the rated 300 W RMS output with low distortion in a properly sized sealed enclosure.

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