• Only 3.24" mounting depth, perfect for trucks, sedans, and slim custom boxes
• Powerful 3" dual 4 ohm high-temp voice coil handles 350W RMS and 600W peak
• Durable injection-molded PP cone and pressed foam surround for controlled bass output
• High flux Y35 50oz strontium ferrite magnet delivers tight and punchy low-end response
• Versatile for sealed or ported enclosures with performance-focused tuning flexibility

12" 350 Watt RMS Dual 4 Ohm Car Audio Subwoofer Massive Audio GTS12

This listing includes:

• (1) Massive Audio GTS12 12" Shallow Mount Subwoofer, Dual 4 Ohm, 350W RMS

The Massive Audio GTS12 is a shallow-mount 12" subwoofer designed to bring thunderous bass to vehicles where space is limited. With a mounting depth of just 3.24 inches, this sub is ideal for trucks, sedans, or custom installs that require slim enclosures without sacrificing output or clarity.

Specifications:

• Speaker Size: 12"


• RMS Power Handling: 350W


• Peak Power Handling: 600W


• Impedance: Dual 4 Ohm


• Voice Coil Size: 3" High-Temp EISV


• Cone Material: Injection-Molded Polypropylene (PP)


• Surround: Pressed Foam


• Magnet: Y35 Strontium Ferrite (50oz)


• Basket: Heavy Gauge Steel with Industrial Texture


• Terminals: Gold-Plated Push Pin


• Tinsel Leads: Poly-Cotton Spider with Woven Round Tinsel Leads


• Mounting Depth: 3.24"


• Mounting Diameter (Outer): 12.3"


• Mounting Cutout Diameter: 10.57"


• Net Weight: 10.8 lbs


• Displacement: 0.08 ft


• X-Max: 9mm


• SPL: 84.62 dB


• Fs (Free Air Resonance): 31.74 Hz

Enclosure Recommendations:

Sealed Box

• Small: 0.62 ft


• Large: 1.2 ft


• F3: 44 Hz (small), 38.4 Hz (large)

Ported Box

• Volume: 0.85–1.5 ft


• Internal Dimensions: 15" (H) x 13.5" (D) x 8.2" (W)


• Port Size: 2.75" x 5.5" Round


• Fb: 38 Hz


• F3: 34 Hz

Dual Sub Ported

• Volume: 1.8–2.4 ft


• Internal Dimensions: 27.8" x 13.5" x 7.5"


• Port Area: 5.94 in


• Port Length: 9.7"


• F3: 39 Hz

Package Dimensions:

• Length: 13.5"


• Width: 13.5"


• Height: 7"


• Package Weight: 12 lbs

The GTS12 proves that shallow doesn’t mean small. Whether sealed or ported, this subwoofer offers deep, clean bass that hits hard and stays cool.