Introduction - JBL LSR Owner's Manual

Linear spatial reference studio monitor system
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LSR Studio Monitor Owner's Manual
Congratulations on selecting the LSR Linear Spatial Reference Studio Monitors. They represent the
sum total of our research and development efforts in sound reproduction. While we don't expect you to read the
entire manual, we do suggest section 2 to get started. At that time, you should have a system to listen to while you
intensely study the rest of the manual for maximum performance.
Beginning with a blank CAD screen, today's equivalent to a clean sheet of paper, the LSR products have
been based on fundamental research into all aspects of monitor design. JBL designed the entire system starting
with the materials and topologies of the individual transducers, through to the final assembly of the diecast parts.
The results are incredibly accurate reference systems with high dynamic capabilities and astonishingly low distor-
LSR New Technologies
Linear Spatial Reference A measurement and design philosophy that takes into account many additional factors
beyond on-axis frequency response. The overall performance of the systems are optimized within a wide listening
window for exceptional performance in a variety of acoustic spaces. Attention to these critical aspects results in a
rock solid image that remains consistent throughout the entire listening field.
Differential Drive
New voice coil and motor assemblies have two drive coils with twice the thermal surface area
of traditional speakers. This enables LSR systems to provide higher peak output with less power compression, bet-
ter heat dissipation and a flatter impedance curve at higher frequencies. These properties reduce spectral shift
that causes monitors to sound different when driven at differing power levels. By reducing the thermal related
effects, the LSR range will sound the same at low, medium or high levels.
Linear Dynamics Aperture™ Contoured ports virtually eliminate high-end turbulence found in traditional port
designs. This provides more accurate low frequency performance at higher output levels.
Dynamic Braking All LSR low frequency transducers are equipped with an electromagnetic braking voice coil to
reduce the effects of extreme excursion with high transient material.
Titanium Composite High Frequency Device Using patented technology, the high frequency device incorporates
titanium and composite materials to improve transient response and reduce distortion. By reducing distortion in
the lower operating range, where the ear is most sensitive, ear fatigue is radically reduced.
Elliptical Oblate Spheroidal (EOS) Waveguide Designed for a targeted listening window of +/- 30˚ horizontally
and +/- 15˚ vertically, the EOS provides a frequency response through the entire window of 1.5 dB from on-axis.
This allows listeners, even far off-axis to hear an accurate representation of the on-axis response.
Neodymium Midrange with Kevlar Cone A 2" neodymium motor structure is used in the LSR32 for high excur-
sion capability with an intentionally low crossover point of 250 Hz. This improves the spatial response of the sys-
tem, which is crucial for accurate reproduction.

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