Graham Audio LS5/1 Loudspeaker

Graham LS5/1 Delivers Studio-Grade Sound in a Floor-Standing Form

Graham LS5/1 is a floor-standing loudspeaker engineered for high-fidelity playback using the classic BBC design principles. This precision-built model is the result of acoustic authority Derek Hughes' design expertise, ensuring a truly accurate soundstage with exceptional tonal balance. The LS5/1 speaker features a damped MDF cabinet with a real wood veneer finish and is purpose-built to deliver refined sonic transparency for discerning listeners, audiophiles, and broadcast professionals.

LS5/1 Loudspeaker Uses BBC Damped Cabinet Design for Sonic Accuracy

Graham LS5/1 is a loudspeaker that uses BBC-style damped thin-wall construction to suppress unwanted cabinet resonance. Unlike overly rigid enclosures, this mass-loaded panel system shifts resonant energy away from the critical midrange band—where human hearing is most sensitive—ensuring vocal clarity and musical detail remain uncoloured and natural. The enclosure is made from MDF and features a premium real wood veneer, combining visual sophistication with acoustic functionality.

Graham LS5/1 Integrates Slot-Loaded 380mm Driver for Wide Dispersion

Graham LS5/1 features a large 380mm bass/midrange driver mounted behind a precisely dimensioned slot to improve off-axis response. This intelligent approach allows the speaker to deliver full-bodied low frequencies and articulate mids while maintaining excellent room integration. The slot-loading technique enables the use of a large diaphragm without introducing beaming or narrow dispersion, a common limitation in large-format drivers used in domestic spaces.

Graham LS5/1 Employs Soft Dome Tweeters for Smooth High Frequencies

Graham LS5/1 incorporates two 25mm soft dome tweeters positioned for optimal phase alignment and imaging. These high-frequency transducers offer extended, airy treble without harshness or fatigue, even at higher playback levels. The crossover frequency is carefully set at 1.6kHz, handled by a complex 22-element passive network to ensure seamless integration between the woofer and tweeters.

LS5/1 Handles High Output with Over 110dB Sound Pressure

Graham LS5/1 delivers powerful dynamic range with a sensitivity of 89dB (2.83V at 1m) and can reach sound pressure levels exceeding 110dB per pair at 2 metres. Designed for transparency at both low and high volumes, the LS5/1 provides unmatched headroom, making it ideal for large listening spaces or monitoring environments requiring wide dynamic reproduction.

Graham LS5/1 Matches Broad Amplifier Range for System Flexibility

Graham LS5/1 is compatible with a wide range of amplifiers, with a recommended power input of 50 to 250 watts (unclipped programme). This wide window ensures optimal performance whether driven by valve-based amplification for warmth or high-powered solid-state amps for transient control and articulation.

LS5/1 Offers Premium Finish Options and Magnetic Grille Mounting

Graham LS5/1 is offered in a range of hand-selected real wood veneers, reflecting the high craftsmanship synonymous with Graham Audio. The speaker grille is magnetically mounted, allowing effortless removal for critical listening sessions or easy aesthetic preference changes. This attention to detail ensures that the LS5/1 blends into both traditional and contemporary home audio environments with equal grace.