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CT Sounds – THERMO-12D4

12″ Shallow-Mount Subwoofer — Dual 4Ω
300W RMS / 600W Peak

DESCRIPTION

12″ shallow-mount dual 4Ω subwoofer designed for installs where mounting depth is limited, such as under-seat truck enclosures, slim boxes, and compact trunk applications. Tuned for daily music listening with balanced low-frequency response.

FEATURES

  • Shallow-mount design for tight or low-clearance installs

  • Dual 4Ω voice coils allow 1Ω or 4Ω amplifier wiring setups

  • 300W RMS / 600W Peak power handling

  • Reinforced pressed-cone diaphragm for controlled bass response

  • High-temperature voice coil improves thermal durability

  • Vented motor for heat dissipation in compact enclosures

SPECIFICATIONS

  • Size: 12″ Subwoofer

  • Impedance: Dual 4Ω

  • RMS Power: 300W

  • Peak Power: 600W

  • Mounting Depth: ~3.5″–3.9″ (shallow profile)

  • Cutout Diameter: ~11.0″–11.2″

  • Cone: Reinforced composite diaphragm

  • Surround: Low-profile rubber surround

  • Voice Coil: High-temp copper winding

  • Motor: Slim vented ferrite structure

WIRING OPTIONS

  • 1Ω mono (parallel coils)

  • 4Ω mono (series coils)

ENCLOSURE GUIDANCE

  • Sealed: 0.60–1.00 ft³

  • Ported: 1.10–1.75 ft³ @ 36–42 Hz