LEAK Adds Sandwich 100 Passive Speaker
All Image Credit: LEAK
LEAK has added a third model to its revived Sandwich loudspeaker range, the Sandwich 100. This bass-reflex design is a two-way standmount that sits below the Sandwich 150 and Sandwich 250. The original LEAK Sandwich debuted in 1961, its mid/bass cone constructed from expanded polystyrene foam sandwiched between two sheets of aluminium foil. The result was a diaphragm that was both light and stiff, enabling what LEAK called true pistonic motion. Revived in 2024, the same core principle underpins these new models bass/mid drivers, through the use of modern materials.
The 34x21x25cm cabinet walls are formed from an outer skin of MDF bonded to an inner layer of high-density particle board, with a specialised adhesive filling that LEAK claims adds resonance-damping properties. Internal bracing, acoustic damping material and a rear-firing port round out the bass-reflex design. Externally, the Sandwich 100 is finished in a walnut veneer with aluminium driver trims, the front being finished in soft-touch matt black.
At the core of the design is a 150mm mid/bass driver featuring a modern version of the Sandwich cone. This uses an aluminium skin bonded to a layer of Rohacell structural foam, a material commonly used in aerospace applications due to its strength-to-weight properties. The aim is to maintain rigidity while keeping the cone lightweight, helping to delivers ultra-fast transient response and low harmonic and intermodulation distortion. The long-throw motor design design includes a high-gauss magnet and low-loss suspension that LEAK claims ensures a linear excursion even at high volume levels.
The tweeter is a 3cm coated textile dome. LEAK says the increased diameter allows for a lower crossover point and better power handling than smaller alternatives. Driver integration is handled by a crossover set at 2.2KHz that uses polypropylene capacitors, air-core inductors and low-loss resistors. LEAK says that accurate time alignment between drivers was the design goal.
Finally, rear panel connectivity is supported by one pair of speaker binding posts.
Specifications:
- Enclosure type: Bass Reflex
- Cabinet Volume: 10.6L
- Bass driver: 5.75″ (150mm) Aluminium-Foamcore Sandwich cone
- Treble driver: 1.2″ (30mm) Coated Textile Dome
- Sensitivity (2.83V @ 1m): 86dB
- Recommended amplifier power: 25 – 100W
- Peak SPL: 102dB
- Nominal impedance: 6Ω (8Ω Compatible)
- Minimum impedance: 4.8Ω
- Frequency response (+/-3dB): 49Hz – 20kHz
- Bass extension (-6dB): 44Hz
- Crossover frequency: 2.2KHz
- Dimensions (HxWxD): 340 (on plinth) x 210 x 250+(20 for terminals) mm
- Net weight: 7.86Kg /pcs
- Finish: Walnut
- Standard accessories: Rubber Feet
Pricing (pair):
- UK: £499.00
- US: $795.00
- EU: €649.00
For more information visit LEAK Audio.
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