JBL 308P MkII - Powered 8" Two-Way Studio Monitor

Model #308P MKII

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Packaging Info

Box Dimensions (LxWxH) 19 x 13 x 13"
Package Weight 21.68 lb

General Information

Weight 17.9 lb / 8.1 kg
Dimensions (H x W x D) 16.5 x 10.0 x 12.1" / 419.1 x 254.0 x 307.3 mm
Power 100 to 240 VAC (±10%), 50 / 60 Hz
Baffle Injection-molded structural ABS
Finish Matte black PVC
Construction Material MDF: 0.6" / 15.0 mm
Enclosure Type Ported
Equalization Boundary EQ:
LF Shelf at 50 Hz: -3 dB, -1.5 dB, 0 dB
HF Trim Control -2 dB, 0 dB, +2 dB
Inputs 1 x XLR female (balanced)
1 x TRS female (balanced)
Dispersion H x V: 120° x 90°
Signal to Noise Ratio 75 dBA (A-weighted), 70 dBr (unweighted), relative to 2.83 VRMS output
THD System Distortion Criteria: <10% THD at maximum output with full compressor / limiter engagement
Electrical Distortion Criteria: 0.2% THD @ 1 kHz / 2.83 VRMS output; <1% THD @ 1 kHz, full rated output
Maximum Input Maximum Peak Input Level (-10 dBV / +4 dBu): +6 dBV / +20.3 dBu
SPL Continuous: 102 dB
Peak: 112 dB
Low Frequency Extension 37 Hz
Frequency Range 37 Hz to 24 kHz (-10 dB)
Frequency Response 45 Hz to 20 kHz (±3 dB)
LF Driver Power Amp 56 W, Class-D
HF Driver Power Amp 56 W, Class-D
Power Configurations Bi-amplified
Input Sensitivity 92 dB at 3.3' / 1 m (-10 dBV input)
Magnetic Shielding Yes
Crossover 1800 Hz 4th order acoustic Linkwitz-Riley
Drivers LF Driver: 8.0" / 203.2 mm
HF Driver: 1.0" / 25.4 mm
HF Driver Type: Soft dome
User Reviews
10 June 2019

These are powerful, and compact! I have older JBL monitors from many years ago, which were like a piece of furniture. The were probably from the 80's, and still work! A great product! My wife did not like them any more, so I got these, which are smaller, powerful, and more modern.

American musical.34136908
12 April 2018

As a JOB PROFESSIONAL USER, these MONITORS sound just as I expected them to sound. They are the perfect addition to my Studio as are ALL the JBL PRO Sound Speakers that I use.

American musical.34136908
28 January 2018

One of the best pwd.monitors you can for its price. I use them for multimedia, but they'd be good in a studio.

17 January 2019

Excellent JBL 8-inch powered monitor. On sale but normal price would still be a good value for cost and performance. Full sound imaging and dispersion, I could hear other channel even when listening off axis on other channel. I bought JBL 5-inch powered monitors on sale as well and compared.

  • +

    Excellent sound imaging/ dispersion. Deeper bass response than 5-inch version. Variable Connections and adjustments

  • -


Product Highlights
  • Bi-Amplified Powered Reference Monitor
  • Dual 56W Class-D Amplifiers
  • Low Frequency Woofer: 8"
  • Neodymium Woven-Composite Tweeter: 1"
  • Image Control Waveguide Technology
  • Balanced XLR & 1/4" TRS Inputs
  • 3-Position HF Trim Switch
  • Boundary EQ for Placement Near Walls
  • Slip Stream Low Frequency Port Design
  • Selectable Input Sensitivity Switch
In The Box
  • JBL 308P MkII - Powered 8" Two-Way Studio Monitor
  • Power Cord
  • Limited 2-Year Warranty
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