Sandwich 250

by Leak


The Leak Sandwich 250 represents a landmark achievement in the realm of sound re...

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The Leak Sandwich 250 represents a landmark achievement in the realm of sound reproduction, building upon a legacy that started in 1961 with the original Leak Sandwich. With a commitment to blending tradition with progressive innovation, these speakers are designed to meet the exacting standards of audiophiles worldwide. The incorporation of a fantastically rigid Leak sandwich cone diaphragm, first introduced in the 1960s and now refined with modern materials, sets a new standard for low distortion and accurate sound reproduction. The diaphragm's construction, featuring a stiff aluminum skin bonded to a core of polymethacrylimide (PMI) foam, ensures unparalleled rigidity and a smooth frequency response over a broad range.

The construction of the Leak Sandwich 250's cabinet is equally innovative, benefiting from six decades of technological advancements. Combining MDF and composite materials in a layered 'sandwich' configuration, the cabinet's design optimizes strength and acoustic performance, featuring intelligent bracing and a distinctive design that pays homage to the original. The aesthetic appeal of the Leak Sandwich 250 is undeniable, with a real-wood walnut veneer, aluminum trim, and carefully chosen grille cloth that complement the classic Leak styling.

Beyond its physical construction, the Leak Sandwich 250 introduces advanced sound engineering innovations. The high-frequency driver is specially designed with a damped rear chamber, reducing resonant frequency and seamlessly integrating the bass, mid, and high frequencies for a detailed and harmonic audio experience. The inclusion of a high-quality crossover, developed through extensive listening tests, further enhances sound quality. To ensure optimal presentation, the Leak Sandwich 250 is paired with a precision-measured plinth, offering a seamless and aesthetically pleasing setup that enriches the listening experience without compromise.

Features

General

  • Design Philosophy and Core Technology: 3-way vented-box/standmount
  • Enclosure Type: Bass reflex
  • Transducer Complement: 3-way
  • ABR: Not specified

Drivers

  • 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

Performance

  • AV Shield: No
  • Sensitivity (2.83V @ 1m): 88.5dB
  • Recommended Amplifier Power: 25-250W
  • Peak SPL: 112dB
  • Nominal Impedance: 6Ω (8Ω Compatible)
  • Minimum Impedance: 4 Ω
  • Frequency Response (+/-3dB): 42Hz - 26kHz
  • Bass Extension (-6dB): 32Hz
  • Crossover Frequency: 470Hz & 3.1kHz

Physical

  • Cabinet Volume: 2.7L, 45.5L
  • Dimensions (mm):
    • Height (on plinth): 655mm
    • Width: 370mm
    • Depth (with terminals): 330mm
  • Carton Size: 500430790mm
  • Net Weight: 27.3kg/pcs
  • Gross Weight: 30.2kg/ctn
  • Finish: Real Wood Veneer - Walnut

Accessories

  • Standard: Rubber feet