TS-A3000LS4: 
Size: 12-inch (30 cm) round subwoofer.
Mounting depth: 3.5 inches (89 mm).
Power handling: 400 watts RMS / 1500 watts peak power.
Voice coil: Single 4-ohm voice coil for flexible wiring.
Cone material: Glass-fiber and mica-reinforced Injection Molded Polypropylene (IMPP) composite cone for rigidity and reduced distortion.
Surround: Rolled rubber surround and an Aramid-fiber dual-spider design improve cone movement and power handling.
Enclosure: Designed for use in a small, sealed enclosure with a recommended volume of 0.8 cubic feet (22.6 liters). 
Performance and benefits
Deep bass from a shallow design: The TS-A3000LS4 is engineered to deliver powerful, accurate bass that belies its compact size. It features an oversized cone surface to move more air, resulting in louder, deeper sound.
Designed for tight spaces: With its low-profile design and minimal mounting depth, this subwoofer is a practical solution for vehicles where conventional subwoofers will not fit. This is especially useful for trucks and compact cars.
High efficiency: The subwoofer has a sensitivity rating of 88 dB, which allows it to deliver strong output with less power, making it an efficient option for powering with a compatible external amplifier.
Durable construction: The combination of a reinforced IMPP cone and double-reinforced spider helps ensure the subwoofer provides consistent, reliable performance over time.