JBL 305P MkII Powered 5″ Two-Way Studio Monitor

The JBL 305P MkII powered studio monitor brings iconic JBL sound to every studio. JBL 305P MkII boasts remarkable detail, precise imaging, a large sweet spot, and an exceptional dynamic range to enhance modern workspace listening. JBL 305P MkII offers proprietary technologies from the 7 Series and M2 Master Reference Monitors, sporting a sleek, modern style at an affordable price. 


  • Patented Image Control Waveguide for precise imaging and a large sweet spot that works well in any room
  • Next-generation JBL transducers have better linearity and a better response to sudden changes.
  • New Boundary EQ settings make up for changes in low frequencies that come from the environment.
  • Underwent a tough 100-hour full-power test by JBL to ensure reliability for years to come.
  • The sleek, modern design makes any studio look better.

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The 3 series Mk II, which builds on the LSR3 series, continues JBL’s tradition of high-quality sound. These powered studio monitors are small and of professional quality. They keep the LSR3 series’ image control waveguide for incredible detail and imaging and the LSR3 series’ wide “sweet spot” that lets you get good sound at any listening position. The Mk II series now includes updated high-frequency (HF) and low-frequency (LF) transducers. These transducers have optimized damping for better transient response and superb linearity for deep bass with less harmonic distortion. New boundary equalization (EQ) also restores neutral LF response when speakers are placed on the work surface and adjacent walls.

Key Features & Benefits: 

  • Patented Image Control Waveguide
  • Big sound out of the box
  • Tailored sound to fit your studio
  • Flexible connectivity
  • 70 years of expertise
  • JBL Professional Reliability

JBL Linear Spatial Reference (LSR) Design

JBL designed the 3 Series system to recreate sound in various listening environments accurately. The Linear Spatial Reference design criteria provide equal sound from all directions, which improves accuracy at the listener’s position, whether in a small room or a large auditorium.

Image Control Waveguide

JBL’s Image Control Waveguide allows the 3 Series Powered Studio Monitors to have remarkable imaging, a wide soundstage, and a strong “phantom center.” Even in crowded mixes, you can hear the smallest detail. Additionally, the Image Control Waveguide provides a broad “sweet spot,” so you don’t need to be seated directly in front of the speakers for accurate, natural-sounding audio.

Complements the LSR310s Powered Studio Subwoofer

The LSR310S is the best match for 3 Series MkII studio monitors because it produces extended low-frequency response into the 20Hz region. The LSR310S is a 10″ active subwoofer with a built-in 200W amplifier and adds deep, powerful bass to any studio monitor system.

JBL Professional Reliability

JBL’s 3 Series speakers are put through a grueling 100-hour power test, in which the speaker must play nonstop at maximum output for 100 hours. This demanding test gives manufacturers the confidence that the 3 Series will perform optimally for years to come.

Additional information

Weight 5.72 kg
Dimensions 37 × 26 × 31.5 cm

Technical Specifications

LF Driver 126mm (5″)
HF Driver Size 25mm (1″)
HF Driver Type Soft dome
Crossover 1725Hz 4th order acoustic Linkwitz-Riley
Ok for use near magnetically sensitive equipment Yes
Input Sensitivity (-10dBV Input) 92dB / 1m
Power Configuration Bi-amplified
Hf Driver Power Amp 41W, Class-D
LF Driver Power Handling 41W, Class-D
Frequency Response (±3 dB) 49Hz – 20kHz
Frequency Range (-10dB) 43Hz – 24kHz
Low Frequency Extension (-10db) 43Hz
Maximum Continuous SPL 94dB
Maximum Peak SPL 108dB
Maximum Peak Input Level(-10dbv / +4dbu) +6dBV / +20.3dBu
System Distortion Criteria <10% THD at maximum output with full compressor / limiter engagement
Electrical Distortion Criteria 0.2% THD @ 1kHz / 2.83VRMS output; <1% THD @ 1kHz, full rated output
Signal to Noise Ratio 75dBA (A-Weighted), 70dBr (unweighted), relative to 2.83VRMS output
Coverage Angle 120° x 90°
Input Connectors 1 x XLR female, 1 x TRS female, balanced
Hf Trim Control -2dB, 0dB, +2dB
Boundary EQ LF Shelf @ 50Hz: -3dB, -1.5dB, 0dB
AC Input Voltage 100 – 240VAC (±10%), 50 / 60Hz
Enclosure Type Ported
Enclosure 15mm MDF
Enclosure Finish Matte black PVC
Baffle Construction Injection-molded structural ABS
Cabinet Dimensions (H X W X D) 298 x 185 x 231 mm (11.75″ x 7.3″ x 9.9″)
Display Carton (H X W X D) 354 x 244 x 299mm (13.9″ x 9.6″ x 11.8″)
Shipping Carton (H X W X D) 373 x 260 x 315mm (14.7″ x 10.2″ x 12.4″)
Net Weight (each) 4.73 kg (10.43 lbs)
Shipping Gross Weight 5.72 kg (12.61 lbs)