THIS PRICE IS FOR A SINGLE SUBWOOFER. These subwoofers have been designed with electro-acoustic parameters that maximize performance for the factory box available below the seats. The ABS plastic basket, reinforced with fiberglass, and the acoustic structure featuring a front magnet, provide for a minimal installation depth for a perfect compatibility with the whole range. Two 5 mm polyurethane gaskets, supplied, allow the subwoofer to fit perfectly to the box, decoupling it from vibration. The 200 mm (8?) APBMW S subwoofers allow a “direct replacement” of the OEM speakers underneath the front seats, making the most of the factory acoustic load and generating deep and crisp low frequencies. You can choose between S8-2 with 2 ohm impedance and S8-4 with 4 ohm impedance for improved system composition versatility. In fact, in the mid-high passive filtered system configuration, with the crossover provided, 4 of the 8-channels of the AP 8.9 bit can be configured in bridge mode delivering 130W rms to each S8-4 installed under the seat. The S8-2 can be used in a fully active, multi-amplified front system, maximizing the power of the AP 8.9 bit at 2 ohms, and employing additional 2 channels for the rear system. The Neodymium magnet used on S8-4 and S8-2 allows for greater power and control than ferrite, while maintaining the depth of installation unaltered. Magnet size D x d x h. 48 (1.89) x 18 (0.71) x 7 (0.28). Weight of one speaker. 1,21 (2.67). Developed with electroacoustic parameters customized for BMW-Mini. To increase listening engagement, through powerful and crisp low frequencies, exploiting the acoustic load provided by the factory box. With an inverted acoustic structure featuring an internal cone, to maximize performance while minimizing bulk and weight. 38 mm voice coil wound on aluminium support. For a considerable power dissipation and stability even during high excursions. Two 5 mm gaskets provided. 2 ohm configuration for maximum output. IF used in combination with AP 8.9 bit in active multi-amplification. Below Compatibility List is for Vehicles with the BASE AUDIO. (These Vehicles Have No Original Tweeters or Amplifier). BASE AUDIO COMPATIBILITY LIST.