Amphion Argon3LX black and white (pack of 2)

The Amphion Argon3LX is a compact floorstanding speaker derived from the Argon3LS model. It uses a new-generation titanium tweeter, a redesigned crossover, and a passive radiator—signature technologies of the brand. This model builds on the Finnish manufacturer’s experience since 1998 and is designed to adapt to different listening environments.

A new-generation tweeter and a masterfully engineered design

The Argon3LX ushers in a major evolution with its new 1-inch titanium tweeter, developed specifically for this X series. This unit significantly improves high-frequency response compared to the previous model, delivering striking levels of detail and clarity. The titanium dome, a material prized for its rigidity and lightness, ensures accurate reproduction up to 55 kHz—well beyond human hearing.

This tweeter is housed in Amphion’s exclusive waveguide, now in its fifth generation. The U/D/D (Uniformly Directive Diffusion) technology addresses several fundamental acoustic challenges: it physically aligns the acoustic centers of the tweeter and midbass driver, evens out dispersion over a wide frequency range, and minimizes cabinet diffraction. The waveguide, made from a carefully selected high-density material, features a smooth contour that controls directivity without introducing unwanted coloration.

The 6.5-inch aluminum woofer handles mid and low frequencies with a rigid yet lightweight cone, capable of perfectly controlled pistonic motion within its passband. This driver, supplied by SEAS in Norway, benefits from Amphion-specific treatment that optimizes its mechanical characteristics. It is crossed over with the tweeter at 1,600 Hz—an unusually low point that brings several decisive advantages.

A unique approach to crossover design and transducers

The revised crossover of the Argon3LX is one of the major improvements in this new generation. Amphion maintains its philosophy of electrical simplicity, using a minimal number of high-quality components to preserve signal transparency. The 1,600 Hz crossover point—well below the human hearing’s critical region (2–5 kHz)—ensures particularly coherent integration between the two drivers.

This low crossover frequency allows the tweeter to reproduce only the range where it excels, while the midbass driver handles the bulk of the critical vocal and instrumental spectrum. The result is a near point-source in the most sensitive range of our hearing, creating stereo imaging of remarkable precision with exemplary phase coherence.

The rear passive radiator advantageously replaces a traditional bass-reflex port. This motorless membrane, precisely tuned by a calibrated mass, moves in perfect sync with the front woofer. This solution eliminates the turbulence and port noise associated with vents, while allowing placement close to walls without compromising tonal balance. Bass gains in definition and control, extending down to 30 Hz (-6 dB) with outstanding articulation.

The high-density MDF cabinet uses thick panels with strategically placed internal bracing. A perforated plate behind the midbass driver, developed in collaboration with a Swiss university, controls internal airflow and stiffens the structure. This substantial 21 kg per speaker build guarantees a complete absence of parasitic vibrations, even at high volume.

Installation versatility and consistent performance

The Argon3LX stands out for its ability to maintain its sonic qualities in various listening conditions. Controlled-dispersion technology provides an expanded listening area: multiple listeners can simultaneously enjoy coherent stereo imaging without being confined to a single sweet spot. This characteristic, inherited from Amphion’s professional monitors, radically transforms shared listening experiences.

The passive radiator offers remarkable placement flexibility. Unlike bass-reflex speakers that require significant clearance, the Argon3LX can be positioned a few dozen centimeters from the rear wall without bloated bass. This placement tolerance greatly facilitates integration into real living spaces, where layout constraints often impose acoustic compromises.

With a sensitivity of 85 dB and a nominal impedance of 8 ohms, the speaker is compatible with a wide range of amplifiers from 50 to 250 watts. However, the Argon3LX’s exceptional transparency ruthlessly reveals the quality of the associated electronics. A quality amplifier with good current reserves will fully unleash the dynamic potential and fine resolution of these floorstanders.

Internal wiring uses pure silver-plated copper, while the binding posts accept all connector types. The supplied plinth improves stability and effectively decouples the speaker from the floor via eight stainless-steel spikes. The compact dimensions (995 x 234 x 344 mm with plinth) make integration into medium-sized rooms easy while delivering the physical and sonic presence of a true floorstander.

Technical Specifications

Highlights

• Titanium tweeter: improved high-frequency response
• Deep, controlled bass with smooth transition across the spectrum
• Optimized crossover for perfect tonal balance
• Easy placement even near walls, thanks to the low crossover point
• 5th-generation Amphion waveguide for a realistic soundstage
• Handcrafted in Finland

Acoustic Configuration

• Operating principle: 2-way, passive radiator
• Drivers:
  • 1″ titanium tweeter (new model)
  • 6½″ aluminum woofer
• Crossover:
  • Crossover point: 1600 Hz
  • Revised crossover for optimal driver integration

Electrical Performance

• Impedance: 8 Ω
• Sensitivity: 85 dB
• Frequency response: 30 – 55000 Hz (-6 dB)
• Recommended power: 50 – 250 W

Dimensions and Weight

• Dimensions with base (H x W x D): 995 x 234 x 344 mm
• Dimensions without base (H x W x D): 967 x 190 x 305 mm
• Additional depth:
  • grille: +10 mm
  • connectors: +18 mm
• Weight: 21 kg