Technical Manual
JBL 708P is the self-powered reference monitor for critical music recording, lm post and broadcast production
applications. The 708P leverages new patent-pending driver technologies and JBL’s renowned Image Control
Waveguide to deliver extraordinary output, stunning detail, an expansive sound stage, and greater accuracy
in a broad range of rooms. 708P delivers several times the output of other comparably-sized studio monitors,
providing signicantly greater dynamic range and greater working distances.
708P
8” Bi-Amplified Master Reference Monitor
NEXT-GENERATION DRIVER TECHNOLOGY
JBL 708P leverages JBL patents and next-generation driver
technologies to provide unparalleled output with greater
dynamic range and extended frequency response in
demanding production applications. The JBL 2409H high-
frequency compression driver incorporates an innovative
low-mass annular diaphragm to deliver smooth response
beyond 36 kHz, with extraordinary output and very low
distortion. The 728G low-frequency transducer leverages
JBL patented Differential Drive
®
technology to reduce power
compression for greater sustained output and extended, linear
low-frequency performance below 35 kHz. These proprietary
drivers allow the 708P to deliver two to three times the output
of conventional studio monitors.
PATENTED IMAGE CONTROL WAVEGUIDE
First introduced in the JBL M2 Master Reference Monitor,
the JBL Image Control Waveguide ensures accuracy
and neutrality while providing a wide sweet spot with
increased sonic detail. By enabling an acoustically
seamless transition between the woofer and high-frequency
transducer, the waveguide provides a detailed sound
stage and accurate imaging across the entire frequency
spectrum. Smooth, neutral on- and off-axis frequency
response allows the JBL 708P to deliver neutral response
across a wide listening area in a broad range of rooms.
INTEGRATED DUAL AMPLIFICATION SYSTEM
JBL 708P features a built-in dual amplification system
that’s optimized for its high-output drivers. A 250W amp
powers the 2409H high- frequency transducer and a 250W
amp is dedicated to the 728G low- frequency transducer.
This combination delivers unparalleled output and detail
at greater listening distances, making the 708P ideal
for post production and mastering environments.
COMPREHENSIVE ROOM EQ
The 708P design yields exceptional neutrality in any room,
the monitor also features on board room equalization,
so you can compensate for the adverse effects of room
acoustics and enjoy the most accurate sound reproduction
in any listening environment. In addition to eight bands
of Room EQ, twelve bands of User EQ allow customized
response curves such as the X-Curve, and compensation for
“transmission-loss” when placed behind a perforated cinema
screen. User-enabled digital delay allows virtual alignment
of speakers relative to the listening position, while additional
AV Synchronization delay is available to compensate for
latency in video displays and align with distant FOH systems.
Next-generation JBL driver technology
for greater output, dynamic range and
superior frequency response
Patent-pending Image Control Waveguide
for exceptional imaging, detail, a wide sweet
spot and neutral response in any room
Integrated 250W + 250W dual-amplification system
provides exceptional output and greater listening distances
Comprehensive room EQ controls
enable you to compensate for the adverse effects of room acoustics
Compact enclosures
for easy placement and installation where space is limited
KEY MESSAGES 6
HIGHLIGHTS 6
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