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JBL LSR432 Powered 8” Two-Way Speaker System

Dolphin id:45571 Product SKU:JBL0661

Call for availability: 0151 448 2080

JBL LSR432 Pack, x2 Powered 8” Two-Way Speakers. Powered 8” two-way system, designed for critical stereo and multi-channel audio production applications that require exceptional spectral accuracy and high SPL capability.

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Acknowledging that much of today’s production is carried out in acoustically untreated rooms, the LSR4300 Series is the first professional monitor to combine JBL’s Linear Spatial Reference technology and automated RMC™ Room Mode Correction, an onboard system that automatically compensates for low frequency anomalies measured at the mix position.

The LSR4300 enhances computer-based production by incorporating system-wide volume control, input source selection, individual speaker solo and user EQ. Harman HiQnet™ Network protocol enables centralized system-wide control from any speaker, wireless remote control and computer using LSR4300 Control Center Software.

438H Low Frequency Transducer

The 8" woofer utilizes a powerful, shielded neodymium magnet of light weight which can be used in close proximity to CRT-type monitors with no interference. The transducer utilizes a copper-clad polepiece that improves high frequency output by reducing voice coil inductance. A copper ribbon voice coil ensures high sensitivity, and a flux shorting ring stabilizes the magnetic field in the gap, reducing distortion. Heat sinking has been placed close to the magnetic gap in order to draw out heat as efficiently as possible. The cone is polymer coated for uniformity of response over the woofer's passband.

431G High Frequency Transducer

The high frequency transducer has a treated silk diaphragm that produces uniform and smooth sound. Its flat ribbon aluminum voice coil ensures low moving mass and enables the transducer to achieve response out to 22 kHz. A light weight neodymium magnet structure with integral heat sinking, along with Ferrofluid in the magnetic gap, enable the transducer to produce high peak output levels with minimal power compression. The magnet structure is integrally shielded, enabling the system to be used in proximity to CRT-type monitors with no interference.

Bi-amplified Power System

The LSR4328P incorporates two high power amplifiers that provide 150 Watts of power to the low frequency transducer and 70 Watts of power to the high frequency transducer. A precision digital dividing network having high-order Linkwitz-Riley slope characteristics for smooth transition between transducers, results in exceptional imaging and lack of time smear. The circuitry also yields a tonal-artifact-free noise floor.

Network and Digital Features

The LSR4300 Series utilizes the Harman HiQnet™ network protocol that allows centralized control of a multi-channel system from a from any speaker’s front panel, wireless remote control, or computer via a standard USB connection and LSR4300 Control Center Software. The network is configured using supplied CAT5 cable and by setting a DIP switch on each speaker. Harman HiQnet also enables synchronized RMC calibration of all speakers on the network.

Automated RMC™ Room Mode Correction System

Room modes” (sometimes called “standing waves”) can produce a low frequency resonance that gives a misleading impression of bass response at the listening position. RMC™ (short for “Room Mode Correction”) in the LSR4300 series automatically analyzes the frequency response of the speakers at the listening position and automatically applies a corrective filter to minimize low frequency resonance.

When the calibration mic is connected and the RMC analysis is initiated, the LSR4300 RMC system applies a parametric filter at any of 73 frequencies (1/24th octave centers) between 20 Hz and 160 Hz, with a variable Q from 1 (1.4 octave bandwidth) to 16 (1/11th octave bandwidth), with 3 to 12 dB of attenuation. During the RMC calibration process, speaker levels are trimmed in 0.25 dB increments so that all speakers in the system produce equal SPL (sound pressure level) at the mix position.

Key Features

  • 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.
  • Integrated bi-amplification with factory calibrated sensitivities.
  • Silk dome transducer with Elliptical Oblate Spheroidal waveguide for precise pattern control.
  • Magnetically shielded transducers minimize interference when used in close proximity to video monitors.
  • Reinforced enclosure and convenient mounting points for mounted installation.
  • Integral handles facilitate ease of positioning.


  • Frequency Response:
    • +/-1.5 dB: 50 Hz - 20 kHz
    • -3 dB: 43 Hz - 22 kHz
    • -10 dB: 35 Hz - 32 kHz
  • SPL / 1m (Continuous/Peak): 106 dB / 112 dB
  • Transducers:
    • 8” 438H / 1” 431G; Self Shielded
    • Neodymium Motor Structures
  • Sensitivity: +4 dBu, -10 dBV : 96 dB / 1m
  • Amplification: 150 w/ 70 w
  • Digital Processing: 24 Bit, 96 kHz
  • Analog Inputs: XLR, 1/4” Balanced, +4 dBu, -10 dBV
  • Digital Inputs: AES/EBU XLR, S/PDIF RCA
  • Data Connections: Harman HiQnet™ Network, USB, RMC Mic
  • Weight: 13.1 kg (29 lb)
  • Dimensions (H x W x D):
    • 438 mm x 267 mm x 269 mm
    • 17.25 in x 10.5 in x 10.6 in

£ 1,749.00 Web price, inc VAT

Ex Vat:
£1,457.50, VAT at 20.00%
x £ payments £ final + £ deposit
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Image: JBL LSR432 Powered 8” Two-Way Speaker System

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