LEAK Sandwich 250 Loudspeakers


In 2020, IAG (International Audio Group) sees LEAK – a onetime British audio heavyweight founded in 1934 – returned to its former glory. LEAK combines its renowned 20th century art-deco styling with today’s most advanced audio technologies to deliver timeless style with modern talent.

Bookshelf speakers are often cited for being affordable, compact, and efficient. So, they’re cost effective, easy to position and require less amp power – making them a highly attractive option. While they don’t produce the same presence as floorstanding speakers, they’re often thought to produce better imaging properties.


The perfect loudspeaker is home to a driver cone that's feather light and stiffer than frozen rope. But light materials are rarely stiff. So, 50yrs ago, Leak fashioned a single cone membrane by sandwiching together two materials (one light, one stiff) and created a loudspeaker icon. Today, the Leak Sandwich is back, reintroduced and re-engineered with modern-day learnings, to prove that just like the BLT, the Banh Mi, the Club, the Reuben, the Tuna Salad and the Philly Cheese, a quality Sandwich never goes out of style.


This 3-way standmount loudspeaker includes a 1.2" (30mm) coated textile dome tweeter, a 4.5" (108mm) midrange and 11” (280mm) bass frequency driver, both utilising Aluminium-Foamcore Sandwich cone technology. At 655 x 370 x 330mm, Sandwhich 250 is an all-out powerhouse for medium-to-large listening/living rooms.


Combining remarkably low mass for rapid transient response with immense rigidity to vanquish the three horseman of cone distortion (transit "hangover," amplitude distortion, and intermodulation), Leak's all-new sandwich cone is so dynamic, so crystal clear, it's a smorgasbord of delicious musical treats.


A stiff aluminium outer skin is sandwiched to a closed-cell rigid foam polymer (polymethacrylimide), often used in aerospace applications. Feather light, immensely rigid and distortion free, this ingenious sandwich of materials creates a tasty listening experience you can sink your teeth into.


Leak's 'handed' array presentation means that the Sandwich has a definitive left and right speaker pair. This meticulous placement of each driver enables truly precise stereo imaging, placing you deep within the heart of highly detailed musical landscapes.


Honouring its forebears, the modern Sandwich incorporates real-wood veneer, aluminium trim and decorative cloth grilles, all to ensure that today's Leak Sandwich looks as delicious as it sounds. Because it shouldn't just be the music that makes you salivate.


The modern Leak Sandwich serves up twice the meal thanks to its braced multilayer sandwich construction of differing timbers bonded by a layer of damping glue. By mitigating cabinet vibrations that colour and distort playback, your music becomes nothing short of mouthwatering.


Modern loudspeakers suffer from an audible thinning known as baffle step, causing a perceived reduction in the all-important lower mid and bass frequencies. Not Leak Sandwich. Its classic, wide-baffle design eliminates baffle step, giving your vocals the richness and depth they deserve.


An isolated and damped rear chamber reduces the treble unit's resonant frequency below the crossover point. So bass, mid and high frequencies can be sewn together with an added dimension of detail and harmonics that ensure every note plays in perfect harmony.


Optional, custom-engineered stands use quality materials and furniture-grade finishes to place that which is most precious to you on a precisely measured pedestal. Tuned for optimal listener positioning, the sound from Leak Sandwich 250 will have you standing to attention.

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LEAK Sandwich 250 Loudspeakers

Technical specifications

General Description 3-way vented-box/standmount
Enclosure type Bass reflex
Transducer complement 3-way
Bass driver 11" (280mm) Aluminium-Foamcore Sandwich Cone
Midrange driver 4.25" (108mm) Aluminium-Foamcore Sandwich Cone
Treble driver 1.2" (30mm) Coated Textile Dome
AV shield No
Sensitivity (2.83 @ 1m) 88.5dB
Recommended amplifier power 25-250W
Peak SPL 112dB
Nominal impedance 6Ω (8Ω Compatible)
Minimum impedance 4Ω
Frequency response (+/-3dB) 42Hz - 26kHz
Bass extension (-6dB) 32Hz
Crossover frequency 470Hz - 3.1kHz
Cabinet volume (in litres) 2.7L, 45.5L
Dimensions 655 x 370 x (300+30)mm
Net weight 27.3kg/pcs
Finish Real Wood Veneer - Walnut 

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