Model S: Tesla getting quality & efficient Bass upgrade Leave a Comment / Audio / By Ultra Auto Sound Tiny and powerful Focal amplifier used Battery for the audio system is under the hood. Plastic covers removed to access battery. Amp installed in the right corner of the trunk out of sight Two JL Audio 8W3v3 subwoofers fits in the bottom trunk compartment Hidden install and sounds superb!!! Share This:FacebookTwitterEmailLike this:Like Loading... Related