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JBL MRX512M – No Longer Available

12” two-way portable monitor or front of house speaker system

Product Description

The JBL MRX512 is a portable 12" two-way speaker system designed specifically for sound reinforcment stage monitoring applications.


  • 12" Differential Drive® woofer for high-power capacity and very lightweight
  • 1.5" annular polymer diaphragm compression driver
  • Compact and low-profile for minimal obstruction of audience sight-lines
  • 70° x 70° coverage for even and smooth response on and off axis
  • Dual-angle pole socket for applications requiring tripod mounting
  • Heavy Duty 16 gauge protective screen backed steel grille
  • Tough DuraFlex™ enclosure finish


  • Power rating: 400 W / 800 W / 1600 W
  • Frequency range: 60 Hz - 20k Hz
  • Dimensions (H x W x D): 645 mm x 380 mm x 345 mm (25.25 x 15.0 x 13.5")
  • Sensitivity: 97dB SPL
  • Frequency response: 90 Hz - 20k Hz
  • Nominal impedance: 8 ohms
  • Rated maximum SPL: 129 dB SPL continuous
  • Coverage pattern: 70º x 70º nominal
  • Weight: 14.9 kg (33.0 lbs.)
  • High frequency driver: 1 x JBL 2408H 37.5 mm (1.5") annular polymer diaphragm, neodymium compression driver
  • Low frequency driver: 1 x JBL 262H 305 mm (12") Differential Drive® woofer

Product Specifications

Condition New
Active or Passive Passive

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How do you rate this product?
I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.