JBL's GTO Series speakers will provide the best possible performance where it matters most — in your car.

The special design of the GTO6427 4"x6" speakers extracts maximum power from your car stereo or outboard amplifier for increased sound levels. The woofer cone boasts more surface area than similarly-sized speakers, further improving efficiency and increasing bass production. The woofer's design ensures tight, powerful output from mounting areas like door panels and package shelves.

The GTO6427 features the My-Ti™ tweeter, which blends mylar and titanium to broadcast smooth, well-controlled high frequencies. Grilles are not included — factory grilles are appropriate for most installations.