For classic car owners who want bigger, fuller sound without altering their vehicle’s interior, the Custom AutoSound Backseat Driver has become one of the most clever and effective audio upgrades on the market. Designed specifically for classic vehicles—where speaker space is limited and originality is priceless—this system delivers the kind of low-end presence and volume most vintage cars simply never had. Best of all, it installs discreetly behind the rear seat, totally out of sight, so you get powerful sound without sacrificing period-correct appearance.

One of the greatest strengths of the Backseat Driver is that it adds bass and overall sound presence without modifying the car. Many classic cars do not have provisions for large speakers, and cutting into metal or interior panels is something most restorers refuse to do. The Backseat Driver solves this problem by mounting behind the back seat—an unused space that is ideal for a compact enclosure.

Because it sits invisibly within the cabin, your classic maintains its factory look while gaining noticeably improved audio performance. For owners of Mustangs, Camaros, Chevelles, Thunderbirds, Beetles, and other classics, the Backseat Driver is an upgrade that lets you hear the music, not see the modification.

Custom AutoSound engineered this system specifically for the acoustic limitations of older cars. The enclosure is optimized for efficiency, and the pair of speakers inside deliver clean mid-bass and strong overall output. The result is richer, warmer, fuller sound, especially compared to dash-only speaker setups.