Description The MTX Subwoofer RT12-04 features a 30 cm diameter cone with a relief MTX logo, delivering 250W RMS and 750W peak power. It operates at a 4 Ω impedance and offers a frequency response from 20 to 500 Hz with 92 dB sensitivity at 2.83V/1m. The subwoofer is built around a 13 × 2.5 cm magnetic structure paired with a 50 mm SPV-cooled voice coil for efficient heat dissipation. ALDS technology enhances cone excursion control and durability. Key Features - 30 cm diameter cone - 250W RMS power - 750W peak power - 4 Ω impedance - 20–500 Hz frequency response - 92 dB sensitivity @2.83V/1m Specifications Brand: MTX Model Number: RT12-04 Product Type: Subwoofer Diameter Mm: 300 Rms Power W: 250 Peak Power W: 750 Impedance Ohm: 4 Frequency Response Hz: 20-500 Sensitivity Db: 92.0 Coil Diameter Mm: 50 Magnetic Structure Dimensions Mm: 130x25 Coil Technology: SPV Alds Technology: true