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JBL 308PMKIII - Powered 8 inch Two-Way Studio Monitor

Product Code: JBL 308PMKIII

Key Features
  • Deeper bass extension - The 8-inch woofer reaches 41 Hz, making 308P MkIII the deepest full-range monitor option in the 3 Series MkIII lineup.
  • Built for low-end-critical listening - A strong choice for electronic music, EDM and DJ production, composition, larger rooms and productions where bass decisions matter.
  • Detailed high-frequency reproduction - Redesigned HF system provides intricate detail, paired with JBL Image Control Waveguide coverage for precise imaging.
  • Clean headroom - 110 watts of bi-amplified Class D power delivers 113 dB peak SPL with more headroom and lower noise for accurate and transparent monitoring.
  • Flexible setup - 81 room EQ combinations and integrated mounting points support stereo, surround and immersive layouts.
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JBL 308PMKIII - Powered 8 inch Two-Way Studio Monitor

JBL 308P MkIII is the larger-format 8-inch monitor in the 3 Series MkIII family, built for users who want the deepest low-frequency extension from a two-way monitor. The 308P is well-suited for electronic music, EDM and DJ productions, composition, and other production workflows where the kick drum, bassline, synth, or cinematic score is a priority.

The high-frequency tweeter is fully redesigned for greater detail and linear excursion. A redesigned JBL Image Control Waveguide supports this new driver and maintains a consistent 120 x 90 degree coverage pattern, helping the stereo image stay focused across a wider working area in larger rooms.

The redesigned 8-inch woofer is the center of the 308P MkIII story. It uses stiffer cone materials, a new 20 oz magnet assembly and aluminum shorting ring to support controlled, lower-distortion bass down to 41 Hz. The front-firing JBL Slipstream port helps keep low-frequency response more predictable when the cabinet sits near a wall, on a desk, or in a space where placement options are limited.

The 308P MkIII uses 110 watts of bi-amplified Class D power and reaches up to 113 dB peak SPL, giving it the output and headroom needed for larger rooms. The balanced Neutrik combo input jack accepts XLR or TRS connectors. The user-selectable +4 dBu / -10 dBV input sensitivity allows for simple configuration when connecting to other audio equipment.

Like the rest of the MkIII monitors, the 308P includes 81 corrective EQ combinations from four one-touch controls.

Eight integrated M4 mounting points with a 75 x 75 mm pattern are included. That makes it practical as a powerful stereo pair, a main or surround channel, or part of a multi-channel immersive audio monitoring system.

Warranty

We offer a 2 year warranty on this product from its date of purchase. For more information regarding our support, repair and warranty, please download our Warranty Guide here.

Configuration 

Two-way powered studio monitor, bi-amplified 

LF driver 

203 mm / 8 in 

HF driver 

25 mm high-frequency driver 

Frequency response (+/-3 dB) 

49 Hz - 27 kHz 

Frequency range (-10 dB) 

41 Hz - 40 kHz 

Maximum peak SPL 

113 dB 

Amplifier power 

110 W bi-amplified (55 W LF + 55 W HF), Class D 

ADC sample rate 

192 kHz 

Room EQ 

81 combinations from four one-touch controls 

Input 

Balanced Neutrik combo (XLR / TRS) 

Mounting 

Eight M4 points, 75 x 75 mm pattern 

Weight 

8.8 kg 

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