Sigma Acoustics · 4 families

Loudspeakers

From the bookshelf monitor to the 300 kg tower. Every model is handcrafted, one by one.

Sigma Acoustics · Flagship

MAAT

The meeting point between high end and live music.

Three-way, up to nine drivers per channel. Remotely controlled motorised AMT tweeters for time-alignment in the room. Built to order, individually tested. Easily driven by low-wattage valve amplifiers thanks to 100–102 dB efficiency.

100–102

dB efficiency

8 Ω

Impedance

6–9

Drivers/channel

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Sigma Acoustics

Orchestra

Three-way. Heil AMT + 18 cm nanocarbon midrange + dual 30 cm woofer.

The reference floorstanding tower of the Sigma line. Four variants — 2.5, 2.6, 2.7, 2.9 — for different rooms and amplification. The 2.9 model features 15″ woofers and an alnico midrange with optimised time alignment. NeoKapton AMT tweeter on adjustable baffle. Multi-layer cabinet, hand-lacquered, available in five wood species.

19–30k

Hz response

3 vie

Configuration

6 dB/ott

Crossover

4 mod.

Variants

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Sigma Acoustics

Overture

Two-way bass-reflex stand-mounted. Project born in 1996, revised in 2013 and in the 20th Anniversary edition.

The Overture is one of the most beloved models among Extreme Audio customers for nearly thirty years. “Double-S” cabinet to favour harmonic decay, angled baffle for sound focus. Next-generation Heil AMT + 16 cm paper-polypropylene sandwich midwoofer. Pairs well with low-power valve amplification. The 20th Anniversary edition features Mundorf capacitors and special finish.

38–30k

Hz response

2 vie

Configuration

89,5 dB

Efficiency

16,5 kg

Weight each

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Sigma Acoustics

M8 · M11 · M15

Compact towers. AMT Heil, 6 dB/octave crossover, artisan construction. Same philosophy, different spaces.

The M series brings the Sigma Acoustics DNA into more compact domestic dimensions. Heil AMT tweeter with adjustable vertical dispersion on all models. First-order hand-wired crossover. Multi-layer high-gloss cabinet by Venetian cabinetmakers. Available in Rosewood, Walnut, Ebony, Cherry and Oak.

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