Descriptions

About: JBL 308P MkIII Powered 8" Two-Way Studio Monitor (Each) 

Professional Monitoring for Demanding Production Environments

JBL 308P MkIII delivers flagship performance for producers, engineers, and content creators who demand greater low-frequency extension, higher output, and uncompromising accuracy. Combining JBL’s next-generation transducer platform with patented acoustic technologies, intelligent DSP room optimization, and powerful bi-amplified Class D performance, 308P MkIII provides the confidence to make critical mix decisions in larger production spaces. With low-frequency extension to 41 Hz (-10 dB), 113 dB peak SPL, and wide 120° × 90° coverage, it delivers full-range monitoring with exceptional dynamics and precision.

Best-in-Class Acoustics

The redesigned acoustic platform combines a new high-performance silk dome tweeter, advanced 8-inch low-frequency driver, JBL’s patented Image Control Waveguide, and patented Slipstream™ port to deliver outstanding clarity, controlled low-frequency performance, and exceptionally accurate stereo imaging. Designed for critical monitoring, 308P MkIII reveals the finest details while maintaining consistent tonal balance across a wide listening area, helping mixes translate with confidence.

Intelligent DSP Room Optimization

Every control room presents unique acoustic challenges. Four onboard DSP controls allow users to quickly optimize monitor performance for desktop, stand, or wall placement while adjusting boundary compensation and high- and low-frequency response. With 81 configurable room tuning combinations, 308P MkIII adapts easily to project studios, professional control rooms, educational facilities, and immersive audio environments.

High Output. Exceptional Headroom

A newly designed bi-amplified 110-watt Class D amplifier system (55 W LF + 55 W HF) delivers exceptional dynamic range, ultra-low self-noise, and powerful transient performance. Capable of producing up to 113 dB peak SPL, 308P MkIII provides the headroom required for high-energy music production, cinematic content, and critical monitoring without sacrificing accuracy or detail.

Product Highlights:

• New High-Performance HF Driver: New HF driver delivers faster transients and accurate ambience, texture, and spatial detail extending to 40 kHz.
• Patented Image Control Waveguide: JBL’s patented waveguide delivers precise imaging and consistent 120° × 90° coverage.
• New Low-Frequency Driver: Redesigned woofer delivers higher output, lower distortion, and controlled bass down to 41 Hz.
• Patented Slipstream™ Port” Double-flared Slipstream™ port reduces turbulence for clean, accurate bass at all levels.
• Corrective EQ: 81 customized presets to compensate for any acoustic environment.
• High-Efficiency Class D Amplification: Bi-amplified 86-watt Class D amplification delivers exceptional dynamics, ultra-low noise, and up to 113 dB peak SPL.

Specifications:

• LF Driver Size: 203mm (8”)
• HF Driver Size: 25mm (1”)
• HF Driver Type: Soft dome
• Crossover: 1960Hz
• OK for Use Near Magnetically Sensitive Equipment: Yes
• Input Sensitivity (-10dBV Input): 92dB / 1m
• Power Configuration: Bi-amplified
• HF Driver Power Amp: 55W, Class-D
• LF Driver Power Amp: 55W, Class-D
• Frequency Response (±3dB): 49Hz - 27kHz
• Frequency Range (-10dB): 41Hz - 40kHz
• Low Frequency Extension (-10dB): 41Hz
• Maximum RMS SPL: 101dB
• Maximum Peak SPL: 113dB
• Maximum Peak Input Level (-10dBV / +4dBu): +7dBV / +21dBu
• System Distortion Criteria: <10% THD at maximum output with full compressor / limiter engagement
• Electrical Distortion Criteria: <0.1% THD @ 1W output, <1% THD @ full rated output
• Sample Rate: 192kHz
• Input Impedance: 20kΩ
• Signal to Noise Ratio: 83dB, A-Weighted, relative to 1W output
• Coverage Horizontal x Vertical: 120° x 90°
• Analog Input Types: 1 x Neutrik Combo, balanced
• HF Adjust @ 3kHz High Shelf: -2dB, 0dB, +2dB
• LF Adjust @ 300Hz Low Shelf: -2dB, 0dB, +2dB
• AC Input Voltage: 100-240VAC (+/- 10%), 50/60Hz
• Enclosure Type: Ported
• Enclosure Construction: 15mm MDF
• Enclosure Finish: Matte black PVC
• Baffle Construction: Injection-molded structural ABS, UL 94 V-0
• Rear Panel Construction: 2mm SPCC
• Mounting Points: M4 x 8 (4 on top, 4 on bottom), 75 x 75 mm VESA pattern
• Cabinet Dimensions (H x W x D): 17.5” x 9.8” x 11.7” (444 x 249 x 296 mm)
• Net Weight: 8.8 kg (19.4 lbs)
• Shipping Gross Weight: 12.0 kg (26.3 lbs)
• Sold Individually

What's in the Box:

• 1 x 308P MkIII studio monitor
• 1 x Power cord
• 1 x Quick setup guide
• 4 x Peel-off rubber pads