Deeper bass extension
JBL 308P MkIII is the largest two-way monitor in the 3 Series MkIII family, delivering the deepest low-frequency extension with bass response down to 41 Hz. Ideal for electronic music, EDM, DJ productions, composition, and cinematic content, it lets you hear and shape every detail of your low end with confidence.

Precise imaging
Make critical listening decisions with greater confidence. A newly engineered high-frequency driver and redesigned JBL Image Control Waveguide create a wide, consistent listening area with precise stereo imaging, allowing mixes to translate more accurately. Instead of a narrow sweet spot, you'll experience reliable performance across your workspace, making it ideal for multi-screen setups, shared studios, and collaborative production environments.

Powerful, controlled bass
Hear deeper, cleaner low frequencies without sacrificing accuracy. A redesigned 8-inch woofer featuring stiffer cone materials, a new 20 oz magnet assembly, aluminum shorting ring, and JBL's patented front-firing Slipstream port delivers lower distortion, improved output, and bass extension down to 41 Hz. The front-firing port also keeps low-frequency performance more predictable when placed near walls or on desktops.

Room optimization made simple
Achieve accurate monitoring in virtually any production space with fast, intuitive adjustment. Four one-touch controls provide 81 corrective EQ combinations to compensate for speaker placement, wall proximity, and high- and low-frequency balance. Fine-tune your monitoring in seconds without software or complicated switches, helping your mixes translate consistently in almost any room.

Scalable from stereo to immersive
Build a monitoring system that evolves with your studio. Start with a stereo pair, add a JBL subwoofer for deeper low-frequency extension, then expand into surround or immersive monitoring as your production needs grow. Eight integrated M4 mounting points with a standard 75 × 75 mm pattern make desktop, wall-mounted, elevated, and inverted installations simple while maintaining consistent voicing across the entire 3 Series MkIII family.