4200 Series
4400 Series
LSR25P Compact,
Bi-amplified Monitoring System

The LSR25P Studio Monitor combines JBL's latest in transducer and system technology and incorporates many of the design philosophies of our LSR Studio Monitor Systems. Scaled to provide an extremely accurate reference for workstations, edit suites and small control rooms, the LSR25P. LSR25P.jpg (7168 bytes)
LSR25P Key Features
  • 5.25" woofer
  • 1" Titanium composite diaphragm tweeter
  • Elliptical Oblate Spheroidal (EOS) Waveguide with 50 x 100 dispersion
  • Bi-amplified design with 100 watts of low frequency power and 50 watts of high frequency power
  • Front Panel Volume and Power Controls.
  • Integrated mounting points for horizontal or vertical orientation.
  • Shielded for use next to Video Monitors.
  • Built in high pass for use with optional subwoofer.

LSR25P Specifications

Frequency Response (+1, -2 dB): 70 Hz - 20kHz
Low Frequency Extension: -3 dB: 65 Hz, -6 dB: 56 Hz, -10 dB: 48 Hz  (User controls set to default)
Crossover Frequency: 2.3 kHz, 4th-Order Electroacoustic Linkwitz-Riley
Input Connectors: XLR Balanced (+4 dBu), RCA unbalanced (-10 dBV)
User Controls: High frequency control, workstation boundary compensation, low frequency alignment, 80 Hz high pass filter (for use with subwoofer)
Variable input attenuation: 0 to 26 dB
Low Frequency Transducer: 134 mm (5.25 in.) diameter, 38 mm (1.5 in.) diameter voice coil, Ferrite magnet with Integral Shielding, Tempered Paper cone with Butyl Rubber Surround, 8 ohms impedance
High Frequency Transducer: 25 mm (1 in.) diaphragm, 25 mm (1 in.) diameter voice coil, Ferrite magnet with Integral Shielding, Damped Titanium Composite diaphragm, 4 ohms impedance
High Frequency Waveguide: Elliptical Oblate Spheroidal (EOS) Waveguide, 50 x 100 dispersion
Low Frequency Amplifier: Bridged Class A-B Monolithic, 100 Watts Sine Wave Rating (<0.1% THD into rated impedance), THD+N < 0.05% (1/2 power)
High Frequency Amplifier: Class A-B Monolithic, 50 Watts Sine Wave Rating (< 0.1% THD into rated impedance), THD+N < 0.05% (1/2 power)
Baffle and Cabinet Material/Finish: Powder Coat Diecast Aluminum
AC Input Voltage: 115/230 VAC, 50/60 Hz (User Selectable)
Net Weight: 7.7 kg (17 lbs)
Dimensions (WxHxD):
17.3 x 26.9 x 24.1 cm (6.8 x 10.6 x 9.5 in)


The LSR Philosophy

The Linear Spatial Reference (LSR) philosophy is based on a set of design goals that carefully control the overall performance of the system in a variety of acoustic spaces. Instead of focusing on a simple measure such as on axis frequency response, LSR designs require much better control over dispersion via transducer selection and crossover frequency design. Critical decisions of image placement, EQ, balance and timbre are typically made within 15 vertically and 30 horizontally. This workspace is where the engineer, producer and artist make critical mixing decisions and this is the area that LSR is optimized for superb in room response. By incorporating LSR into the system design requirements, placement rules are relaxed, a more stable stereo image is maintained and off axis coloration is minimized.

Copyright 2001 JBL Professional.
All rights reserved.