Focal ISUB BMW Inside Series Direct Fit Sub Under Seat Subwoofer 4ohm. SUBWOOFERISUB BMW 4 is a subwoofer that delivers powerful bass thanks to its neodymium engine, a high performing Focal technology. Focal Inside for BMW & MiniRediscover the pleasure of listening to your favourite songs whilst on the road with Focal’s audio kitsWith ISUB BMW 4, the sound is neutral and the install is quick thanks to the spacer integrated in the chassis that allows perfect integration into the original location. With its 4 Ohms impedance, it is ideal with your orignal amplificati Quick installation No wire to cut, no modification 100% compatible with your vehicle Sound quality superior compared to the original one Mounting accessories included. ISUB BMW 4 is a subwoofer that delivers powerful bass thanks to its neodymium engine, a high performing Focal technology. Focal Inside for BMW & Mini. Rediscover the pleasure of listening to your favourite songs whilst on the road with Focal’s audio kits. With ISUB BMW 4, the sound is neutral and the install is quick thanks to the spacer integrated in the chassis that allows perfect integration into the original location. With its 4 Ohms impedance, it is ideal with your orignal amplificati. No wire to cut, no modification. 100% compatible with your vehicle. Sound quality superior compared to the original one. Single 8 4-ohm component subwoofer. Designed for specific BMW models. Frequency response: 35-200 Hz. Check your vehicle compatibility by contacting us or checking focal inside website. Adhesive backed Focal Inside badge. To be eligible for a return, your item must be unused and in the same condition that you received it, and it must be in the original packaging. By visiting our website and/or purchasing something from us, you are deemed to have accepted these terms and conditions. A downloadable software product or a software, voucher codes, gift cards or gift wrapping service.