Amphion One18X Decreased distortion. Improved extension.
Home / Amphion One18X Decreased distortion. Improved extension.
Home / Amphion One18X Decreased distortion. Improved extension.
Enhanced Precision for a New Era
The One18X takes everything that made the original One18 a studio staple—its legendary translation and pinpoint imaging—and refines it for the multichannel-listening era. With decreased distortion across the spectrum and improved high-frequency extension, this monitor provides a more linear, detailed window into your audio. The result is a rock-solid phantom center and a 3D soundstage that allows you to make critical decisions with even greater confidence.
Decreased Distortion & Ultra-Linear Highs:
The standout upgrade in the One18X is the newly developed 1” titanium tweeter. This driver features significantly increased linear excursion capability and ultra-low distortion (often measuring below 0.1% in the high-frequency range). This massive reduction in distortion allows for a much smoother, more transparent high-end that reveals subtle spatial cues and transient details that were previously hidden.
Improved Extension and Crossover Design:
Extended Bandwidth: While the original model was a standard for nearfield monitoring, the One18X improves the frequency ceiling, now reaching up to 55 kHz. This ensures a more natural roll-off and superior phase response within the audible range.
Refined Crossover: The newly engineered crossover network enhances overall system resolution and driver integration. By keeping the crossover point at 1600 Hz—away from the ear's most sensitive range—the One18X maintains the "point-source" behavior that Amphion is famous for.
Signature Acoustic Engineering:
Passive Radiator Technology: Like its predecessor, the One18X uses a rear-mounted passive radiator instead of a port. This eliminates port turbulence and "chuffing," providing a faster, more accurate low-end (down to 45 Hz) and allowing for more flexible placement near walls.
Corian Waveguide: The CNC-machined high-density Corian waveguide ensures uniform dispersion and perfect time-alignment between the tweeter and the 6.5” aluminum woofer, resulting in an exceptionally wide and deep sweet spot.
Ultra-Low Distortion Tweeter: State-of-the-art 1” titanium dome for maximum clarity.
Improved Frequency Extension: Remarkable bandwidth of 45 Hz – 55 kHz (+/-3dB).
Newly Engineered Crossover: Enhanced resolution and superior transient precision.
Handmade in Finland: Expert craftsmanship using premium, sustainable materials.
Point-Source Imaging: Low 1.6 kHz crossover for lifelike 3D spatial cues.
Passive Radiator Design: Natural energy transfer and improved bass definition.
Scratch-Resistant Paint: New low-emission, durable finish in a rich black.
| Specification | Details |
| Operating Principle | Two-way, Passive Radiator |
| Tweeter | 25 mm / 1” Titanium (Ultra-low distortion) |
| Mid / Woofer | 18 cm / 6.5” Aluminium |
| Crossover Point | 1600 Hz |
| Frequency Response | 45 – 55,000 Hz +/-3dB |
| Impedance | 8 Ω |
| Sensitivity | 85 dB @ 2.83V/1m |
| Power Recommendation | 100 – 350 W |
| Measurements (H x W x D) | 380 x 191 x 305 mm |
| Weight | 10 kg (22 lbs) |
1 x Amphion One18X Studio Monitor (Sold as single or pair)
1 x Owner's Manual
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