Graham Audio LS5/8 Monitor Loudspeakers

Graham LS5/8 Delivers BBC-Mastered Clarity at Full-Range Scale

Graham LS5/8 Monitor Loudspeakers are the definitive expression of the BBC’s high-fidelity monitor design, engineered for precise sound reproduction at elevated volume levels. Originally created to meet the BBC’s need for a large-format monitor capable of higher sound pressure than the LS5/9, the LS5/8 remains a benchmark for accuracy, power, and midrange neutrality.

Developed in collaboration with acclaimed audio designer Derek Hughes and crafted in the UK under BBC licence, the Graham Audio LS5/8 is an exceptional loudspeaker system that bridges professional monitoring precision with audiophile listening expectations.

LS5/8 Combines BBC Engineering with Custom Graham Refinements

Graham LS5/8 is a two-way, reflex-loaded monitor that builds on the BBC’s original large speaker platform. The heart of the system is a bespoke 12-inch Diaphnatone polypropylene bass/midrange driver, developed specifically for this application by Volt Loudspeakers. This custom driver is engineered to deliver extended low-frequency depth and enhanced dynamic authority without compromising midband accuracy.

To preserve the LS5/9’s celebrated vocal clarity and tonal neutrality, Graham has matched the 300mm bass/mid unit with the same Audax HD13D34H 34mm dome tweeter used in the LS5/9. This tweeter’s low-distortion, natural high-frequency character ensures seamless integration and consistent tonality across the LS series.

The result is a speaker system that captures the musicality and insight of the LS5/9 while offering increased scale, low-frequency reach, and the ability to energise larger spaces with minimal distortion or compression.

LS5/8 Cabinet Design Optimises Resonance Control and Air Damping

Graham Audio’s LS5/8 uses a critically damped thin-wall cabinet, constructed from high-grade 12mm birch plywood with hardwood batons, in line with BBC engineering principles. This structural approach controls panel resonances by shifting energy away from the sensitive midband, preserving tonal integrity and openness.

Mass-loading further attenuates unwanted colouration, and Rockwool acoustic insulation—chosen over typical foam materials—improves airflow damping and internal absorption. This maintains the integrity of the monitor’s bass response and supports coherent imaging.

Every enclosure is meticulously hand-assembled in the UK and finished in real wood veneers, with Teak and sprayed lacquer finishes available upon request.

LS5/8 Delivers Reference-Grade Sound for Large Rooms and Studios

Graham LS5/8 passive monitors provide authoritative, full-range performance with reference-level accuracy. The system extends cleanly down to 40Hz and delivers a measured frequency response of ±3dB up to 16kHz, allowing engineers and audiophiles alike to trust what they hear.

With a sensitivity rating of 89dB SPL (2.83V, 1m) and the ability to output over 110dB per pair at 2 metres, the LS5/8 is equally suited for high-end mixing suites and expansive listening environments. Nominal impedance is 8 ohms, making the system amplifier-friendly, while recommended amp power ranges from 50 to 250 watts for unclipped programme material.

This design builds on the original active LS5/8, replacing the electronic crossover with a highly refined passive crossover network by Derek Hughes. This update enhances stereo imaging, resolution, and transparency—exceeding the original active model’s performance while staying true to the stringent BBC specification.

LS5/8 Maintains Tonal Consistency Across the LS Series

Graham Audio LS5/8 integrates seamlessly with the rest of the BBC monitor family, allowing engineers and listeners to transition between LS5/8 and LS5/9 systems without tonal discontinuity. This consistency in voicing is critical in multi-monitor setups, where workflow and critical judgement rely on predictable sonic behaviour.

Whether used in broadcast, mastering studios, or discerning home environments, the LS5/8 loudspeakers provide a reliable, musically revealing listening tool with the scale and output to match larger spaces—without losing the finesse that defines BBC monitor heritage.

Stands not included. Custom finish availability and production lead times may vary.