Technical Manual

PRX818XLF
Features:
< Maximum SPL Output 134 dB Peak
< 18” Differential Drive
®
low-frequency driver for
low-distortion and higher SPL
< 1500W highly efcient Class-D amplier
< Wireless remote control of its onboard
DSP EQ parameters via Wi-Fi. Control and
congure your show from anywhere.
< DSP input limiter circuit, crossover, dynamic
limiting, and component optimization
< Professional XLR-1/4” combination inputs and
XLR loop-through
< Top panel M20 pole mount socket for sub/
satellite conguration
< Injection molded handles with comfort rubber
grips for easy transport
< Lightweight poplar plywood cabinets made
structurally sound with tongue and groove
joints and protected by JBL’s tour proven
DuraFlex™ nish
Application:
< The PRX818XLF extended low frequency
subwoofer was designed and engineered to
provide sub bass frequencies with accuracy and
power. Used as a single sub in a sub/ sat system
or in multiples as part of a scalable, large format
sound reinforcement system, the PRX818XLF
performs with exceptional efciency and
control. The subs are stackable and light-weight,
ensuring quick set-ups and tear-downs. Due
to their rugged construction, they are perfect
for AV rental inventories. With the integrated
stereo pass-thru this is the most powerful low-
frequency complement to the PRX full-range
systems. The addition of a polarity reverse
option further enables system optimization.
PRX800 subwoofers feature a standard M20
threaded pole cup that can accept most modern
subwoofer-mounted speaker poles.
< The PRX818XLF is a high performance self-
powered subwoofer system with remote Wi-Fi
control of onboard DSP EQ parameters. The
PRX818XLF is comprised of a powerful 2278G
Differential Drive
®
dual voice-coil and magnetic
gap, woofer driven by a 1500 Watt Class-D
power amplier. Sophisticated DSP is at the
core of a fully featured input section, providing
user selectable cross-over functionality, polarity
optimization, protection, 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-filled
nylon for added strength and durability.
< The amplier input panel offers stereo inputs
with XLR or ¼ inch jack compatibility. A
user selectable crossover ensures a smooth
transition to full-range system connected to the
stereo outputs. Signal present and limiter lights
indicate the system status and assist in setting
the optimum level via the level control knob.
18” Self-Powered
Extended Low Frequency
Subwoofer System
Specifications:
System:
System Type: Self-powered 18”, extended low frequency subwoofer
Maximum SPL Output: 134 dB peak
Frequency Range (-10 dB): 30 Hz - 103 Hz
Frequency Response (±3 dB): 35 Hz - 87 Hz
Input Connectors: 2 x balanced female XLR / 1/4-inch
Input Impedance: 20K Ohms (balanced)
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
Power Save: Red indicates system has power but is in a power-saving
mode and will not pass audio
Dynamic Control (Input): dbx Type IV™ limiter circuit
System Low Pass:: 80 Hz DSP
Loop out Crossover Frequency: 80Hz Digital 24db/octave Linkwitz-Riley Filter
Amplier:
Design: Highly ecient Class-D amplier
Power Rating: 1500W
AC Power Input: 100V - 240V ~ 50/60 Hz
Speaker:
LF Driver: 1 x JBL 2278G 460 mm (18 in) woofer
Enclosure: Retangular, 18 mm, birch-poplar mix
Transport:
2 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):
692 mm x 523 mm x 724 mm
(27.26 in x 20.6 in x 28.5 in)
Net Weight: 36.28kg (80 lb)
Gross Weight: 45.0 kg (100.0 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.