Piega Ace 50 silver (pack of 2)

Five years after the TMicro series, Piega is renewing its entry-level range with the Ace series. The Ace 50 is the flagship model: a floorstanding speaker barely 14 cm wide, clad in aluminium and crowned with the AMT ribbon tweeter that built the reputation of the Swiss brand. Behind this slender silhouette hides a three-way system capable of competing with much bulkier speakers.

Aluminium, curves, and Swiss precision

Designer Stephan Hürlemann shaped the Ace 50 around a simple conviction: it’s the music that should dress the room, not the speaker. The extruded aluminium cabinet adopts an oval profile only 14 cm wide and 16 cm deep, with no visible screws or sharp edges. This rounded shape is not just aesthetic: it more effectively absorbs internal reflections and eliminates standing waves that colour the sound in traditional rectangular cabinets.

Choosing aluminium instead of traditional MDF allows for thinner walls while maintaining high rigidity. With identical external dimensions, the Ace 50 therefore offers a larger internal volume than a wooden speaker, which favours bass extension. The circular 25 cm base, screwed onto a central pillar, slightly elevates the column and accentuates its slender profile.

The range comes in three finishes: natural (silver) aluminium, black anodised aluminium, or glossy white lacquer. Each version includes a matching fabric grille that blends harmoniously with the speaker’s rounded profile.

Three-way design in a compact form factor

Despite its slim profile, the Ace 50 uses a three-way configuration — an architecture usually found in much larger floorstanding speakers. Engineers Daniel Raimann and Roger Kessler redesigned all of the drivers for this new generation.

The two 120 mm MDS-B woofers at the bottom operate in parallel in a bass-reflex enclosure with a front-firing port. This layout allows relatively close placement to walls without excessive bass boom. Piega claims almost double the acoustic power in the low frequencies compared to the TMicro 60, resulting in bass that is both fuller and tighter.

The third 120 mm MDS driver, located just below the tweeter, operates in a sealed chamber and handles the midrange up to around 4 kHz. Separating the roles in this way allows each driver to operate in its optimal range, reducing distortion and improving vocal coherence.

The AMT-1 tweeter, Piega’s sonic signature

The name Piega comes from the Italian word for “fold”, a direct reference to the tweeter technology that has characterised the brand since its beginnings. The AMT-1 (Air Motion Transformer) uses a pleated 24 × 36 mm diaphragm paired with a high-purity neodymium magnetic motor.

Unlike dome tweeters that move air in a pistonic manner, the AMT compresses and expels air through the pleating motion of its diaphragm. This mechanism delivers a fast transient response and particularly low distortion. The response extends up to 40 kHz, making the Ace 50 compatible with high-resolution audio files.

The speaker’s narrow front baffle also contributes to the soundstage: by reducing stray reflections around the drivers, it allows the sound to detach naturally from the cabinet and project a wide stereo image even when the speakers are placed close together.

Everyday listening and home integration

The Ace 50 can be paired with amplifiers delivering between 20 and 150 watts into 4 ohms. Its 90 dB/W/m sensitivity makes it relatively easy to drive: a mid-range integrated amplifier is sufficient to get the best from it. It is well suited to medium-sized rooms — living rooms, offices, bedrooms — and can be used without a subwoofer in most setups.

For home cinema installations, the Ace 50 pairs with the Ace Center centre speaker and Ace 30 satellites, which share the same drivers and sonic signature. There is also a wireless version, the Ace 50 Wireless, which integrates amplification and network connectivity.

Its modest weight of 12 kg and height of just over one metre make handling and installation easy, while the circular base ensures solid stability on flat floors.

Technical specifications

Acoustic characteristics

• Recommended amplifier power: 20 – 150 W
• Sensitivity: 90 dB / W / m
• Nominal impedance: 4 Ω
• Frequency response: 45 Hz – 40 kHz
• Design principle: 3-way floorstanding system

Drivers

• Bass and midrange drivers
  • 2 × 120 mm MDS-B (mid-bass)
  • 1 × 120 mm MDS (mid-bass)
• Ribbon tweeter
  • 1 × AMT-1

Physical characteristics

• Speaker dimensions (H × W × D): 104 × 14 × 16 cm
• Base dimensions: Ø 25 cm
• Weight: 12 kg

Connectivity

• Bi-wiring / bi-amping terminals

Available finishes

• Silver aluminum with silver fabric grille
• Black anodized aluminum with black fabric grille
• White lacquer with white fabric grille