Linear Spatial Reference
Advanced Linear Spatial Reference
design ensures ﬂatter-off-axis response
for greater clarity at the mix position.
RMC™ Room Mode Correction
provides electronic control of room
modes. User measurement and
calibration kit available.
Differential Drive technology with
dynamic braking for extended low
frequency response and minimal
Integrated bi-ampliﬁcation with
factory calibrated sensitivities.
Titanium composite high frequency
transducer with elliptical oblate
spheroidal waveguide for precise
Magnetically shielded high frequency
transducer minimizes interference
when used in close proximity to
mounting points to facilitate wall mounting. Recessed handles facilitate easy
positioning of the loudspeaker in the environment and aid in transportability.
High-Density bafﬂe for high inertial
ground and low resonance.
Linear Dynamics Aperture port
design eliminates port turbulence
and reduces port compression.
218F Low Frequency Transducer
The 8" woofer is based on JBL’s patented Differential Drive technology. With
dual ±.1" voice coils, power compression is kept at a minimum to reduce spec-
tral shift as output power levels increase. An added third coil located between
the drive coils acts as a dynamic brake to limit excess excursion and reduces
audible distortion at maximum levels. The cone is made of a carbon ﬁber com-
posite forming a rigid piston and is supported by a soft butyl rubber surround.
Reinforced enclosure and convenient
mounting points for mounted
Integral handles facilitate ease of
53TiS High Frequency Transducer
The high frequency transducer has a ±" composite diaphragm integrated with
The LSR6328P studio monitor is
an Elliptical Oblate Spheroidal (EOS) Waveguide with wide uniform dispersion
that is critical to the smooth spatial response required in today’s working envi-
ronments. The driver is shielded to minimize the interference when used in
close proximity to video monitors.
designed for use in critical stereo and
multi-channel monitoring applications
that require exceptional spectral accura-
cy and high SPL capability. The
LSR6328P combines the latest in JBL’s
renowned transducer and system tech-
nology with psychoacoustically derived
spatial response criteria, resulting in a
more accurate studio monitoring refer-
ence system. In this design process, the
system’s frequency response over the
forward listening range (±±15 vertically
and ±3ꢀ5 horizontally) is optimized, as
opposed to the conventional approach
of optimizing the response directly on-
axis. This design approach involved
careful component design, selection of
crossover frequency, and precise bafﬂe
geometry and detail. The result is a sys-
tem that can be used for the most criti-
cal judgements of recording balance,
image placement, and equalization. The
matching of the LSR6328P system to the
listening environment is further
enhanced through the use of RMC, an
analysis/correction system that identi-
ﬁes and corrects response to compen-
sate for the dominant low frequency
standing wave in the system’s room
response. In addition to a rich array of
performance features, the LSR6328P has
a reinforced enclosure and integral
BiT-haemLSpR6l3iﬁ28ePdcoPmobiwnees rtwSoyhsigthempower ampliﬁers with an active dividing
network. Included are over 21ꢀ watts of continuous low frequency power and
±2ꢀ watts for the high frequency section. The active dividing network produces
a 36/dB-per-octave Linkwitz-Riley type response for smooth transition between
transducers, both in the frequency and time domains. This results in exceptional
imaging and a lack of time smear, and the circuitry also yields a tonal-artifact-
free noise ﬂoor.
InUpseurtadSjuesntmseintitsviintcyluadenldeveElqcaulibarlaitzioantiseottnin:gs for use with professional
and semiprofessional equipment, as well as ﬁne tuning with variable level trim.
Neutrik “Combi” input receptacles accommodate both XLR and ¼" connectors,
either balanced or unbalanced. DIP switch ± inserts a variable input trim for up
to ±3 dB of input attenuation. DIP switches 2 & 3 allow selection of either
-±ꢀ dBV, +4, or +8 dBu calibrated input sensitivities on the ¼" or XLR inputs. A
Very Low Frequency (VLF) high-pass ﬁlter provides protection from excess
woofer excursion at maximum playback levels. DIP Switch 4 disables this ﬁlter
providing slightly extended deep bass response below the enclosure port tuning
and allowing the user to observe cone motion caused by sub-sonic signal.
Boundary compensation is user-selectable to correct low frequency and mid-
bass build-up when the speakers are placed close to a corner or wall. Three
settings (-±.1 dB, -3 dB, -4.1 dB) are provided using DIP switches 1 & 6. DIP
switches 7 & 8 provide ±.1 dB high-frequency boost and attenuation to allow
compensation for dull or bright listening environments.
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