Now Implemented!
Description
Install a subwoofer for deeper bass from the audio system along with a separate subwoofer amplifier.
Competitive/Pricing/Notes
There are plenty of third-party products in a wide range of sizes and capacities. The rear trunk footwell is likely the best spot for adding a subwoofer, assuming no rear-facing seats are installed. A decent speaker amplifier combo will start at $300 plus installation costs, and easily top $2000 for a high-end system.
To install your own subwoofer on early versions of the Model S, check out our DIY instructions at: teslatap.com/modifications/sub-woofer-and-amplifier-installation/
Status
A powered 8″ Subwoofer is standard now in all S/X, and available as standard in premium versions of other models.