Next-gen Amphion Performance
The Amphion One18X takes the performance of its acclaimed predecessor to the next level with a newly developed, ultra-low distortion tweeter and crossover network design that improve clarity, resolution, and transient response. Any pro monitoring setup could benefit from Amphion One18X speakers. The LF driver and tweeter work together in perfect phase alignment to reproduce a wide sonic range with exceptional accuracy. These high-end passive monitors employ custom-made drivers, a high-density Corian waveguide, and a sealed enclosure with a passive radiator to deliver the natural, transparent, unhyped sound you need to make critical mixing decisions. Discerning engineers at Sweetwater know that you can expect consistent mix translation when you monitor on Amphion One18X speakers.
Related Videos: One18X 6.5-inch Passive Studio Monitors - Pair
Corian waveguide provides control and balance
Like all Amphion monitors, the One18X features a waveguide that is CNC machined out of high-density Corian. This improves the tweeter's ability to couple with the air, helps extend its response down to the crossover point, and enhances overall system dispersion uniformity across a wide frequency range that extends up to a remarkable 55kHz. It also physically aligns the drivers, which improves time and phase coherence. The result is a rock-solid phantom center, pinpoint imaging, and a luxuriously wide and deep sweet spot, all of which aid you in producing mixes that translate to the world outside your studio.
Point-source performance imaging: the gold standard
Driver integration is one of the main challenges in speaker design and construction. If you want to combine the outputs of two different drivers seamlessly, it makes sense to place the crossover point outside the most sensitive area of the hearing range — the critical midrange between 2kHz and 5kHz. That’s why Amphion specified an unconventionally low crossover point (1.6kHz) for the One18X, resulting in unprecedented midrange clarity and point-source imaging coherence typically only found in coaxial designs. This allows you to more easily place, for instance, vocals and solo instruments in a mix and achieve an ideal balance that holds up well on “real-world” playback systems, where lackluster mixes go to die.
Sealed box + passive radiator = greater accuracy
Signals produced by a ported (bass reflex) loudspeaker generate internal pressure changes and port turbulence, which can cloud the critical midrange and degrade overall resolution. The One18X's sealed (acoustic suspension) cabinet design results in a dramatic improvement in midrange performance and bass accuracy, while also loading the room in a more controlled and predictable manner. Essentially a speaker cone, surround, and basket without the motor, Amphion's rear-mounted passive radiator moves in perfect synchronization with the front woofer, ensuring that the distance from the front of the cabinet to the rear is always the same and that the balance of air in the cabinet is maintained. This results in tighter, more even bass response (and more forgiving wall-adjacent placement) compared to rear-ported designs.
Amphion One18X Features:
- Passive studio monitor pair designed for uncompromising performance
- 2-way passive construction with rear-mounted passive radiator
- 6.5-in. woofer
- 1-in. titanium tweeter
- Crossover point: 1600Hz
- Impedance: 4Ω
- Sensitivity: 89dB @ 2.83V / 1m
- Frequency response: 45Hz–55kHz, ±3dB
- Recommended amplifier power: 100W–350W
