Technical Manual

PRX812
Features:
< Maximum SPL Output 135 dB Peak
< 12” Differential Drive
®
low-frequency driver for low-
distortion and higher SPL
<
1.5” diameter next generation JBL neodymium
compression driver
<
1500W (dual 750 watt) highly efcient Class-D
amplier
<
Optimized EQ for monitor or front-of-house
applications
<
Wireless remote control of its onboard DSP EQ
parameters via Wi-Fi. Control and congure your
show from anywhere.
<
DSP input section, crossover, dynamic limiting,
component optimization, selectable system EQ
<
Professional XLR-1/4” combination inputs, RCA
inputs, and XLR loop-through
<
Integrated 36 mm pole mount socket with angle down
tilt
<
Integrated 12 x M10 suspension points
< Lightweight poplar plywood cabinets made structurally
sound with tongue and groove joints and protected by
JBL’s tour proven DuraFlex™ nish
Application:
< PRX812 is a compact and versatile speaker in the
PRX800 Series with remote Wi-Fi control of onboard
DSP EQ parameters. It has been designed to deliver
maximum performance for its weight and size as both
a stage monitor and a front of house main PA. Two
user selectable EQ settings are provided to optimize
the system for either application. With a dual socket
pole mount the PRX812 is a perfect match with a
PRX818XLF subwoofer, offering a high performance
self-powered sub/sat system.
<
The PRX812 is comprised of a 12” Differential Drive
®
woofer, a 2408H-1, 37.5 mm (1.5 in) annular polymer
diaphragm, neodymium compression driver mounted
to a 90° by 50° horn, all driven by 1500 watt Class-D
digital power amplier. Sophisticated DSP is at the
core of a fully featured input section, providing user
selectable system EQ, protection, input sensitivity
selection, cross-over functionality, dynamic limiting
and discrete component optimization.
<
All PRX800 cabinets are built from 18 mm, strong,
light-weight poplar plywood made structurally
sound with tongue and groove joints. All PRX800
Series cabinets are protected by JBL’s tour proven
DuraFlex™ nish. Grilles are made from dent-
resistant 16 gauge steel and handles are made from
light-weight glass-lled nylon for added strength and
durability. All M10 suspension points are constructed
from 14 gauge steel and have been tested with a yield-
strength of 1000 lb each.
< The amplier input panel offers XLR or ¼ inch jack
compatibility and a sensitivity switch provides extra
exibility, making it possible to connect literally any
sound source without using a mixer. Signal present
and limiter lights indicate the system status and assist
in setting the optimum level via the level control knob.
12” Two-Way Full-Range
Main System/Floor Monitor
Specifications:
System :
System Type: Self Powered 12”, two-way, bass-reex
Maximum SPL Output: 135 dB peak
Frequency Range (-10 dB): 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
Input Connectors: 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 PRX Connect application via Wi-Fi
Dynamic Control (Input): dbx Type IV™ limiter circuit
Crossover Frequency: 1.85 kHz
Amplier:
Design: Highly ecient Class-D amplier
Power Rating: 1500W (750W x 2)
AC Power Input: 100V - 240V ~ 50/60 Hz
Speaker:
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
Enclosure: Asymmetrical, 18 mm, birch/poplar wooden enclosure
Suspension / Mounting: Dual 36 mm pole socket, 12 x M10 Suspension Points
Transport:
1 x injection molded handle with backing cup
Finish: Obsidian DuraFlex™ nish
Grille:
Powder coated, Obsidian, 16 gauge perforated steel with acoustically
transparent black cloth backing.
Dimensions (H x W x D):
599 mm x 385 mm x 341 mm
(23.6 in x 15.1 in x 13.4 in)
Net Weight: 18.1 kg (40 lb)
Gross Weight: 21.2 kg (48.0 lb)
JBL continually engages in research related to product improvement. Some materials, production methods and design renements are
introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product
may differ in some respect from its published description, but will always equal or exceed the original design specications unless
otherwise stated.