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

Model #308P MKII

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Packaging Info

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

General Information

Magnetic Shielding Yes
Input Sensitivity 92 dB at 3.3' / 1 m (-10 dBV input)
Power Configurations Bi-amplified
HF Driver Power Amp 56 W, Class-D
LF Driver Power Amp 56 W, Class-D
Frequency Response 45 Hz to 20 kHz (±3 dB)
Frequency Range 37 Hz to 24 kHz (-10 dB)
Low Frequency Extension 37 Hz
SPL Continuous: 102 dB
Peak: 112 dB
Maximum Input Maximum Peak Input Level (-10 dBV / +4 dBu): +6 dBV / +20.3 dBu
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
Drivers LF Driver: 8.0" / 203.2 mm
HF Driver: 1.0" / 25.4 mm
HF Driver Type: Soft dome
Dispersion H x V: 120° x 90°
Inputs 1 x XLR female (balanced)
1 x TRS female (balanced)
HF Trim Control -2 dB, 0 dB, +2 dB
Equalization Boundary EQ:
LF Shelf at 50 Hz: -3 dB, -1.5 dB, 0 dB
Enclosure Type Ported
Construction Material MDF: 0.6" / 15.0 mm
Finish Matte black PVC
Baffle Injection-molded structural ABS
Power 100 to 240 VAC (±10%), 50 / 60 Hz
Dimensions (H x W x D) 16.5 x 10.0 x 12.1" / 419.1 x 254.0 x 307.3 mm
Weight 17.9 lb / 8.1 kg
Signal to Noise Ratio 75 dBA (A-weighted), 70 dBr (unweighted), relative to 2.83 VRMS output
Crossover 1800 Hz 4th order acoustic Linkwitz-Riley
User Reviews
14 April 2020

Monitors should be neutral, of course, but good ones, these included, allow a good degree of control over just how neutral they are. Overall, I find these a bit bright, but in sum fairly balanced.

  • +

    Excellent price, good range of options in matching tone to particular studio acoustics, good stereo imaging, quiet, and they can get loud.

  • -

    A bit bright, but I think a little more tweaking will yield exactly what I'm looking for.

16 December 2019

I bought to produce my songs and I know I have a pair of the best monitors I could buy in its price range and even more expensive ones would not be as suitable for my needs (EDM/Urban).

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.

13 July 2020

Excellent studio monitors. They are larger than expected, so I would advise using them in a mid to large studio vs in a desktop application (unless your desk is very large). Soundstage and audio accuracy are excellent. They come with power cords, but no other cords so plan accordingly. Recommended.

9 July 2019

Good Sound, quality, comfort & Bass. The best speaker ever I have.

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.

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.

10 August 2020

Bought these on the recommendation of my advisor due to band converting to internet production and performances ...Found them to be great for internet studio work. The 8 inch woofer is dynamic for bass replication.....SERIOUS SOUND! Thank you!

  • +

    Powerful forward sound replication

  • -


31 May 2020

Excellent monitor.

6 June 2019

The price was good on sale as much as the 305's. I like that the volume knob has the bumpy stages that way a pair can be accurately synchronized to the same volume. The highs and lows frequency adjustment switches are also a life saver since my room is not sound treated.

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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