The JBL Stadium GTO860 is a 6 inch by 8 inch two-way multi-element car speaker designed for high output and accurate sound reproduction. It uses Plus One glass fiber woofer cones with hi-roll rubber surrounds and oversized 35mm woofer voice coils for improved heat dissipation and reduced distortion.

Edge-driven soft dome tweeters provide broader smooth high frequency response and include a push-button tweeter level control with flat and +3 dB settings. The speakers feature a high output 2 ohm design, gap-switchable crossovers for 3-way upgradability with an optional midrange, and are built to meet Harman standard environmental reliability testing; they are configured to fit many factory three-way applications.