Reference - Audio Connections/RMC™

Room Mode Correction

To route an incoming AES/EBU two-channel signal to another speaker, use an cable with XLR plugs on both ends to connect the AES/EBU OUT of the first speaker to the AES/EBU IN of the second speaker.

To route an incoming S/PDIF two-channel signal to another speaker, use a cable with phono plugs on both ends to connect the S/PDIF OUT of the first speaker to the S/PDIF IN of the second speaker.

For best results when using digital inputs, always use high-quality cable designed for use with digital equipment. We recommend the use of 110 ohm cabling for AES/EBU connections and 75 ohm cabling for S/PDIF connections.

LSR4300 audio interconnections

RMC™ Room Mode Correction

When a loudspeaker is placed in any work space, it and the room behave as a system which, for better or worse, acts as the reference point for creative decisions. When a room has inadequate or incorrect acoustic treatment, “room modes” (sometimes called “standing waves”) can result, producing low frequency resonances that give a misleading impression of bass response and therefore make it difficult to achieve a proper mix balance.

The LSR4300 utilizes a revolutionary technology called RMC™ (short for “Room Mode Correction”) that is designed to correct the problem. RMC analyzes the frequency response of

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JBL LSR4326P, LSR4328P owner manual RMC Room Mode Correction
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LSR4326P, LSR4328P specifications

The JBL LSR4328P and LSR4326P studio monitors are part of JBL’s acclaimed professional audio lineup, known for their precision, clarity, and innovative technology. Designed for critical listening environments, these monitors are ideal for music production, broadcast, and post-production applications.

One of the standout features of the LSR4328P is its 28/26-watt bi-amplified system, which delivers powerful and detailed sound reproduction. The LSR4328P has an 8-inch woofer and a 1-inch titanium tweeter, while the LSR4326P is equipped with a 6.5-inch woofer and the same 1-inch titanium tweeter. This dual-cone design ensures that both low and high frequencies are reproduced accurately, making them suitable for a variety of musical genres.

Both models include JBL’s patented Image Control Waveguide technology. This unique design enhances the monitors’ stereo imaging and provides a wider sweet spot, allowing listeners to experience a more immersive soundstage. With precise positioning of the tweeter, the waveguide helps achieve a smooth frequency response, which is essential for accurate mixing and mastering.

Another notable feature is the integrated room control EQ, which allows users to tailor the monitors to their specific acoustic environment. This helps to counteract the effects of room acoustics, ensuring that the sound remains consistent and accurate regardless of the listening environment. Additionally, both models support various input options, including balanced XLR and TRS connections, making them versatile for different studio setups.

The LSR4328P and LSR4326P also incorporate advanced DSP technology for refined performance. This includes precise limiting and crossover functionalities that ensure optimal power distribution between the woofer and tweeter. The result is a balanced sound that does not compromise on detail or frequency response.

In terms of build quality, both models feature a sleek, professional design with a durable cabinet that minimizes resonance and distortion. They are equipped with a front-mounted volume control, making it easy to adjust levels during sessions. Together, the JBL LSR4328P and LSR4326P blend state-of-the-art technology with user-friendly features, establishing them as essential tools for professionals seeking high-fidelity sound in their recordings.
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