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Section 2: Introduction
Congratulations on your purchase of LSR2300 Series Studio Monitors. The LSR2300 Series Studio Monitors meet
JBL’s high standards for accuracy and long-term reliability in demanding professional applications. All LSR2300
models incorporate JBL professional transducer and network technologies to provide accurate frequency response,
exceptional low frequency extension and high SPL capability. JBL LSR Linear Spatial Reference design ensures
greater accuracy at the mix position in a broad range of production rooms. Additionally, each speaker is equipped
to integrate into professional production systems and work environments.
JBL LSR Linear Spatial Reference Design
Because listening environments vary, JBL designed the LSR2300 system using LSR Linear Spatial Reference
design criteria that improves accuracy at the listening position in a broad range of rooms. The key to accuracy is
ensuring not just the on-axis sound, but also the reected sound reaching the mix position is neutral. While most
manufacturers take only a single on-axis measurement of the speaker’s performance, Linear Spatial Reference
design criteria requires 72 measurements, 360 degrees around the speaker, yielding more than 1,200 times more
data. This data is used in the design of critical system components, enabling JBL to engineer complete systems
that deliver smooth off-axis response. The result: clear accurate sound at the listening position in any room.
The LSR2300 Series includes a range of features to meet the needs of demanding audio production applications.
• LSR2300 low frequency magnetically-shielded transducers are equipped with 1.5" (LSR2328P and
LSR2325P) and 2.0" (LSR2310SP) voice coils with robust motor structures to provide excellent low
frequency performance. By reducing thermal-related effects, the LSR2300 Studio Monitors sound the
same at low, medium and high levels. The woofers are magnetically shielded to prevent interference with
magnetically sensitive displays and equipment.
• All models are internally amplied with high-output Class A-B monolithic power ampliers to provide high
SPL (Sound Pressure Level) for demanding production applications.
• The soft dome magnetically-shielded High-Frequency Transducer in the LSR2325P and LSR2328P
incorporates optimally damped materials to improve transient response and minimize distortion. By
reducing distortion in the lower operating range, where the ear is most sensitive, ear fatigue is reduced.
• A JBL Elliptical Oblate Spheroidal (EOS) Waveguide is precisely engineered to achieve smooth mid and
high frequency response for a targeted listening window of ±30º horizontally and ±15º vertically. This
provides greater accuracy at the mix position where the blend of on-axis and reected off-axis sound is
critical. The Elliptical High Frequency Aperture around the tweeter optimizes high frequency coverage for
smoother in-room response above 9 kHz
• The LSR2300 series models include balanced XLR, 1/4" and unbalanced RCA connectors, and a variable
level attenuator to allow interface to a broad range of signal sources.
• High Frequency and Low Frequency Trim controls in the LSR2328P and LSR2325P allow adjustment
of frequency response to preference, or to compensate for acoustically reective or absorptive listening
environments.
• LSR2328P and LSR2325P have integrated mounting points and reinforced enclosures to allow safe wall
mounting using readily available, industry-standard mounting brackets.
• The LSR2310SP Subwoofer incorporates a professional bass management system with selectable
cross-over settings to optimize low frequency performance in a range of production environments.
• When added to your LSR2300 System, the optional JBL MSC1 Monitor System Controller provides control
of your system and JBL RMC™ Room Mode Correction – JBL’s ingenious technology that measures
and automatically compensates for the effect of low frequency room modes at the mix position that have
plagued mix engineers. More information about the JBL MSC1 Monitor System Controller is available at
the JBL Professional Website
To get the most out of your JBL LSR2300 system, please review this owner’s manual and keep it on hand for
future reference. Also, please register your new speakers at www.jblpro.com/registration .