Description
- 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: 0.851.5 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: 1.82.4 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 doesnt mean small. Whether sealed or ported, this subwoofer offers deep, clean bass that hits hard and stays cool.

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