LEAK Sandwich 100 Loudspeakers

The LEAK Sandwich 100 is a compact, 2-way loudspeaker that embodies the spirit of innovation defining British Hi-Fi since 1934. As the most accessible entry in the new-generation Sandwich series, it utilizes aerospace-grade materials to deliver a fast, articulate, and transparent performance. Designed by Peter Comeau, this loudspeaker brings the legendary 1961 Sandwich tradition into the modern age, offering rich musical output within a modest, room-friendly footprint.

Key Features

• Redefined Sandwich Cone: A 5-inch mid-bass driver featuring a Rohacell structural foam core and aluminium skins for ultra-fast transient response.
• Large 30mm Textile Dome: A specially developed coated dome tweeter that allows for lower crossover points and superior power handling.
• Phase-Correct Integration: A meticulously engineered crossover using audiophile-grade polypropylene capacitors to ensure a stable, 3D stereo image.
• Resonance-Controlled Cabinet: Internally braced multi-layer construction with a distinct soft-touch black baffle to eliminate panel flex and coloration.
• Versatile Musicality: Tuned to perform across all genres, from intimate jazz trios to high-energy rock, with natural tone and believable scale.

Aerospace-Grade Driver Innovation

At the heart of the Sandwich 100 is the latest evolution of the renowned LEAK Sandwich diaphragm. By bonding a Rohacell structural foam core between lightweight aluminium skins with aerospace-grade adhesives, LEAK has created a cone with an exceptional strength-to-weight ratio. This incredibly rigid surface virtually eliminates cone "break-up," allowing the 5-inch mid-bass driver to deliver every note—from the warm timbre of a cello to the taut punch of a kick drum—with absolute conviction and minimal distortion.

Authority in the High Frequencies

Unlike typical bookshelf speakers that use smaller tweeters, the Sandwich 100 features a substantial 30mm coated textile dome treble unit. This larger design allows the tweeter to reach lower frequencies, integrating seamlessly with the mid-bass driver via a phase-coherent crossover. The result is a high-frequency character that is open and finely detailed without ever becoming harsh. Expect cymbals with shimmer, voices with breath, and a wide listening axis that maintains its tonal balance even when you move around the room.

A Modern Classic Cabinet Design

The Sandwich 100 is a study in resonance control, featuring a cabinet designed to stay silent while the music speaks. The enclosure utilizes precision-machined cutouts, strategic internal bracing, and a rear-firing port for controlled bass extension. Visually, it pays homage to LEAK’s heritage with furniture-grade wood-effect polishing and aluminium trim, but adds a modern twist: a unique soft-touch black baffle that differentiates it from any other loudspeaker in its category.

Other Key Features

• Mid-Bass Driver: 5-inch (135mm) Rohacell & Aluminium Sandwich cone.
• Treble Driver: 30mm Coated Textile Dome for smooth, open highs.
• Enclosure Type: Bass reflex with rear-firing port and internal bracing.
• Crossover Components: Air-core inductors and polypropylene capacitors.
• Aesthetics: Polished wood-effect finish with soft-touch black baffle.
• Design Lead: Engineered by Director of Acoustic Design, Peter Comeau.
• Placement: Optimized for smaller rooms and near-field listening.
• Heritage: Built on the legendary 1961 "Sandwich" innovation.

Frequently Asked Questions

How does the Sandwich 100 differ from the larger Sandwich 150 and Sandwich 250 models?

The Sandwich 100 is the most compact in the range, featuring a 5-inch mid-bass driver, while the 150 uses a 6.5-inch driver and the 250 is a much larger 3-way standmount with an 11-inch woofer. While they all share the same "Sandwich" cone technology, the 100 is optimized specifically for smaller rooms and desktop/near-field listening where space is at a premium.

Should I keep the grilles on or off when listening?

While the grilles are removable to reveal the beautiful soft-touch black baffle, the Sandwich 100 is specifically voiced to perform with the grilles in place. Keeping them on ensures the most balanced tonal character and a faithful high-frequency response as intended by the designers.

What is the benefit of using "Rohacell" in the speaker cone?

Rohacell is a structural foam used in the aerospace industry because of its incredible strength-to-weight ratio. By using it as a core between aluminium skins, the cone becomes extremely rigid but very light. This allows it to move ultra-fast (improving transients) while preventing the cone from bending or breaking up during heavy bass passages.

Can I use these with any amplifier, or do I need a LEAK amp?

While the Sandwich 100 will perform beautifully with any high-quality amplifier, it is aesthetically and sonically matched to the LEAK Stereo 130 and 230. It also pairs perfectly with the new LEAK TruStream network streamer for a complete, lifestyle-friendly Hi-Fi system. 

How important is my sitting position for these speakers?

Thanks to the phase-coherent crossover design and the large 30mm tweeter, the Sandwich 100 offers a very stable 3D stereo image across a broad listening axis. This means the sound stays consistent and the tonal balance remains intact even if you aren't sitting exactly in the center sweet spot

Specifications

Brand    Leak

Color     Walnut

Speaker Type Click for the definition.   Bookshelf Speaker

Speaker Special Features    2-Way Speaker Design

Enclosure type  Bass Reflex

Frequency Response Click for the definition.    (+/-3dB): 49Hz - 20kHz

Power Click for the definition.    25-100W (Recommended Amp power)

Woofer Bass Driver Size (mm) Click for the definition.   (150mm) Aluminium-Foamcore Sandwich cone

Tweeter Click for the definition. 1.2-inch (30mm) Coated Textile Dome

Impedance (Ω)  6Ω (8Ω Compatible), 4.8Ω (Minimum)

Sensitivity           86dB

Item Sold As       Pair

Crossover Frequency Click for the definition.       2.2kHz

Warranty       Australian Manufacturer Warranty

Product Dimension (H×W×D)      340 x 210 x 270 mm

Product Weight 7.9kg