The RCF TTS 18-A II is a compact, high output subwoofer module ideal in combination with TT+ two way systems. The RCF TTS 18-A II woofer features lightweight neodymium magnet, inside-outside copper voice coil; silicon double spiders; water resistant treated cone; magnet assembly with minimum power compression. The amplifier section features 1400 watt RMS SMPS class-D Amplifier with full DSP and RDNet network capabilities.