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JBL STX812M 12" 2-Way Bass Reflex Stage Monitor  

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The JBL STX812M is a high-quality, high power-handling wedge speaker. It is designed to be a high performance 12" two-way floor monitor, but it can also do double duty as a utility speaker for use on ... Click To Read More About This Product


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The JBL STX812M is a high-quality, high power-handling wedge speaker. It is designed to be a high performance 12" two-way floor monitor, but it can also do double duty as a utility speaker for use on a tripod stand or over a subwoofer, utilizing a single-position pole mount. A 70 degree by 70 degree waveguide is utilized for precise coverage. This versatile cabinet will cover a wide portion of the stage while rejecting feedback or throw deep into an audience. It is reasonably lightweight, but delivers that famous JBL punch and clarity.

  • Compact and low-profile for minimal obstruction of audience sight-lines
  • 70x 70 nominal coverage
  • Bi-amplified or full-range passive operation
  • Pole socket for applications requiring pole or tripod mounting
  • High power handling, low distortion Vented Gap Cooling LF driver
  • 3 in. (diaphragm) neodymium magnet compression driver
  • Rugged DuraFlex coated enclosures sized to be truck pack friendly
  • 14-Gauge steel grille lined with acoustically transparent cloth
  • Frequency Range ( -10 dB) : 50 Hz-20kHz
    Frequency Response (± 3 dB) : 75 Hz-20kHz
    Coverage Pattern : 70? — 70? nominal
    Sensitivity (1W/1m) : 95dB
    Power Rating
    (Cont. Pink Noise/Program/Peak) : 800 W / 1600 W / 3200 W
    Rated Maximum SPL : 130 dB SPL Peak
    Nominal Impedance : 8?
    Input Connectors : Two NL4
    Operational Modes : Full Range/Bi-Amp
    Dimensions (H x W x D) : 571 mm x 355 mm x 264 mm
    (22.5" x 13.4" x 10.4")
    Net Weight : 19 kg ( 42lb)

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  • Repair costs covered for up to three years from date of purchase
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Review Snapshot

by PowerReviews
JBLSTX812M 12" 2-Way Bass Reflex Stage Monitor

(based on 1 review)

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Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


A new revolution in speaker mains

By Busy Bruce

from Springfield, Eugene, Oregon

About Me Professional Musician

See all my reviews


  • Clear Sound
  • Compact
  • Durable
  • Easy To Use
  • Lightweight


    Best Uses

    • Events
    • Geezer Gigs
    • Gig Events
    • Mobile DJ
    • Night Club Gigs
    • Performances
    • Professional Recording

    Comments about JBL STX812M 12" 2-Way Bass Reflex Stage Monitor:

    I special ordered these 812ms for their small size. Very compact for portability. They are small and non-intrusive at gigs. I quickly found these do not feed back at all. Never had a speaker main that did not feed back. The clarity is amazing, and my vocals get to the audience clear and understandable. The sound cuts thru the audience like a knife thru butter. Never had that before. The jbl legendary sound is better than ever. Singing is effortless and easy. They have a punch that is unlike any other speaker I know of. Amazing fidelity, tight and super linear. Expensive yes, but a fantastic investment for one who performs often. I am very pleased I purchased these stx-812ms. Guitar Center made it easy.

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