Fischer&Fischer SN/SL 770.1AMT are three-way floorstanding speakers with bass reflex, consisting of three parts.
Custom-made tweeters from German manufacturer Mundorf operate on the AMT (Air Motion Transformer) principle, with two pieces individually measured and selected from a larger number for each pair, within a very narrow tolerance range. They use powerful neodymium magnets and a Kapton diaphragm, which (thanks to its large active surface area folded into an accordion shape) provides excellent cooling and high load capacity while maintaining extremely low weight.
Two 180 mm mid-bass drivers from German manufacturer Ehmann&Partner, arranged in a D'Appolito configuration, feature a sandwich diaphragm composed of a combination of carbon, paper, and carbon foil. The open system with an aluminum center diffuser improves the directional characteristics of the driver, and direct air access ensures high-quality cooling of the coil even under heavy load, without compression of dynamics due to overheating.
The bass and two sub-bass drivers (Ehmann&Partner), all with a diameter of 220 mm, are located on the front panel and feature a sandwich membrane made of carbon, paper fibers, and special synthetic foam. Thanks to their sophisticated design, the cast magnesium baskets provide excellent ventilation from the rear while minimizing any acoustic noise.
Rhodium-plated terminals for connecting cables from the prestigious manufacturer RSV Ruhstrat are installed on anti-resonance plates made of solid aluminum, and the cable connectors contain pure silver conductors.
The speakers are custom-made in Germany, with the frame made from half a billion-year-old, premium slate. The SN version is made from natural slate slabs with a surface texture resembling natural quarried stone. The SL version has a sound box made of surface-ground slabs, painted in a color of your choice from the RAL palette. Magnetic cover grilles can also be purchased as an accessory. The systems are installed on solid aluminum legs, which limit the transmission of vibrations to the building structure. These are finished with spherical stainless steel spikes set in anti-resonance cups.

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