The JBL PRX812 is a versatile 12” two-way full-range main system/floor monitor designed for applications such as stage monitoring and front-of-house main PA. It is equipped with a powerful 1500-watt class-D amplifier and features a bass-reflex design for impressive volume in a compact and lightweight enclosure. The speaker incorporates built-in Wi-Fi for convenient wireless control, accessible through the PRX Connect mobile app available on iOS and Android devices. This app allows users to wirelessly control volume levels, utilize an 8-band parametric EQ, and apply up to 50ms of speaker delay for precise sound adjustments.

Key Features:

    Wi-Fi Connectivity: Built-in Wi-Fi enables wireless control of the system from any location within the venue.

    PRX Connect Mobile App: The free PRX Connect mobile app, compatible with iOS and Android, provides wireless control over volume levels, 8-band parametric EQ, and up to 50ms of speaker delay.

    Powerful Amplification: Class-leading 1500-watt amplifier delivers ample power to fill the venue with high-quality sound.

    Differential Drive® Transducers: JBL Differential Drive® transducers provide higher SPL in a lightweight design.

    Neodymium Compression Drivers: Next-generation JBL neodymium compression drivers enhance performance.

    Redesigned Crown Input Technology: Features XLR, 1/4”, and RCA inputs, plus XLR loop-through for versatile connectivity.

    Intelligent Variable-Speed Fan: Fan activates only when needed to reduce noise.

    Updated Tuning: Delivers flat frequency response and smooth off-axis behavior.

    Durable Construction: Wooden cabinets with tour-proven DuraFlex™ finish and dent-resistant 16-gauge grilles ensure durability.

    Universal Power Supply: Compatible with power systems worldwide.

    dbx Type IV™ Limiting: Ensures clear, accurate sound at high volumes.

    Applications: Suited for use as a stage monitor or a front-of-house main PA. Ideal for use with a PRX818XLF subwoofer for a high-performance self-powered sub/sat system.

    Components: Comprised of a 12” Differential Drive® woofer, a 2408H-1 neodymium compression driver mounted to a 90° by 50° horn, and a 1500-watt Class-D digital power amplifier.

    DSP: Sophisticated DSP at the core of a fully-featured input section provides user-selectable system EQ, protection, input sensitivity selection, cross-over functionality, dynamic limiting, and discrete component optimization.

    Construction: Built from 18 mm poplar plywood with tongue and groove joints. DuraFlex™ finish for protection. Grilles made from dent-resistant 16-gauge steel, and handles made from light-weight glass-filled nylon.

    Amplifier Input Panel: Offers XLR or ¼ inch jack compatibility, and a sensitivity switch for flexibility. Signal present and limiter lights indicate system status.

The JBL PRX812 is designed to deliver maximum performance for its weight and size, providing a high-powered and easily controlled audio solution for various applications.



System Type     Self Powered 12”, two-way, bass-reflex

Maximum SPL Output     135 dB peak

Frequency Range (-10dB)     Main: 44.8 Hz – 20 kHz Monitor: 44.8 Hz – 20 kHz

Frequency Response (±3 dB)     Main: 55.7 Hz – 20 kHz Monitor: 56.5 Hz – 20 kHz

Inputs     2 x Balanced XLR / 1/4 inch input, 2 x unbalanced RCA input

Input Impedance     20K Ohms (balanced), 10K Ohms (unbalanced)

Signal Indicators     Limit: Yellow LED indicates peak output has been reached and dsp limiter is acting Signal: Green LED indicates signal present Power: Blue indicates system has power and ready to pass audio

EQ     User selectable presets for Main or Monitor position, Advanced EQ settings available using Wi-Fi and PRX Connect application

Dynamic Control (Input)     dbx Type IV™ limiter circuit

Crossover Frequency     1.85 kHz

Design     Highly efficient Class-D amplifier

Power Rating     1500W (750W x 2)

AC power input     100V - 240V ~ 50/60 Hz

LF Driver     1 x JBL 272G 305 mm (12 in) woofer

HF Driver     1 x JBL 2408H-2 37.5 mm (1.5 in) annular polymer diaphragm, neodymium compression driver

Coverage Pattern     90° x 50° nominal

Directivity Index (DI)     10.2 dB

Directivity Factor (Q)     10.4

Enclosure     Asymmetrical, 18 mm, Duraflex coated plywood

Suspension / Mounting     Dual 36 mm pole socket, 12 x M10 Suspension Points

Transport     1 x injection molded handle with backing cup

Finish     Obsidian DuraFlex™ finish

Grille     Powder coated, Obsidian, 16 gauge perforated steel with acoustical transparent black cloth backing.

Dimensions (H x W x D)     599mm x 385mm x 341mm (23.6in x 15.1in x 13.4in)

Net Weight     40 lbs / 18.1 kg

Gross Weight     21.2 kg (48.0 lb)

Mic Inputs     2

Phantom Power     No

Effects     25 parametric EQ's and speaker delay

Outputs     1 x XLR (mix out)