The Ø Audio Ymir is a flagship horn loaded floorstanding loudspeaker, sold as a pair, that pairs a compression style horn driver with a long stroke woofer in a large, heavily built cabinet weighing 264.5 lbs each. It represents the summit of what Ø Audio builds, and it is aimed squarely at the listener who understands the tradeoffs of horn loading and wants the dynamic authority, low distortion, and directivity control that this topology delivers when it is executed carefully.
Ø Audio has built its reputation on horn loaded designs that prioritize efficiency, dynamic realism, and controlled dispersion rather than the small footprint and low sensitivity that dominate much of the modern market. The Ymir, named for the primordial giant of Norse myth, is the fullest expression of that philosophy. Everything about it, from its mass to its horn geometry, is oriented toward moving air effortlessly and coupling the transducers to the room with as little stored energy and as little compression as possible.
Acoustic Design and Topology
How does the horn loading work and why use a horn at all?
Horn loading works by placing an acoustic transformer, the horn, between a small high pressure diaphragm and the large low pressure open air of the room, and the reason to do it is efficiency and low distortion at high output. A bare diaphragm is a poor impedance match to air, so it has to move a lot to make sound and it works hard doing it. A horn increases the acoustic load the diaphragm sees, so the diaphragm moves less for a given sound pressure level. Less excursion means less modulation distortion, less thermal compression, and more of the input signal arriving intact. The audible payoff is a sense of ease at realistic volume, where transient peaks land with their full scale intact instead of softening as the driver approaches its limits.
The Ymir's rated sensitivity of 94 dB reflects this. That is a high figure for a full range floorstander, and it means the speaker converts a small amount of amplifier power into a large amount of acoustic output. In practical terms it opens the door to lower powered amplification, including single ended tube designs, because the speaker does not need brute force to reach lifelike levels.
What is the Quad Vertex Sound Field horn?
The Quad Vertex Sound Field is Ø Audio's constant directivity horn geometry, and it is designed so that the speaker radiates a consistent tonal balance across a controlled listening window rather than beaming on axis and going dull off axis. Constant directivity means the horn maintains a stable coverage angle across its operating band. This matters because the sound that reaches your ears is a mixture of the direct wavefront and the reflections that arrive slightly later from the walls, floor, and ceiling. If the off axis response has the same shape as the on axis response, those reflections carry the same tonal signature as the direct sound, and the brain fuses them into a coherent, natural image. A horn with erratic directivity sends reflections with a different balance, which smears imaging and thickens the midrange.
The Quad Vertex approach shapes the wavefront through defined geometric vertices to control that dispersion. The audible result an experienced listener should expect is a large, stable soundstage that does not collapse when you move off the central seat, along with a midrange that stays clean and uncolored because the power response into the room is well behaved.
What does the 2.9 inch carbon fiber diaphragm horn driver contribute?
The 2.9 inch carbon fiber diaphragm is the compression driver that feeds the horn, and its job is to reproduce the upper midrange and treble with high stiffness and low mass so it can start and stop quickly without ringing. Carbon fiber is chosen because it offers an excellent ratio of stiffness to weight. A stiff diaphragm resists breaking up into uneven flexing modes within its operating band, which keeps the frequency response smooth and pushes any resonant misbehavior above the audible region or out of the passband entirely. Low mass lets the driver track fast transients, the leading edges of struck and plucked instruments, with accuracy.
A 2.9 inch diaphragm is comparatively large for a compression driver, which favors output capability and lower midrange extension, allowing the horn to take over from the woofer at a sensible point and cover a wide swath of the critical midrange with a single, coherent source.
How does the carbon fiber sandwich woofer handle the bass?
The woofer uses a carbon fiber sandwich cone with an ultra linear long stroke, extended range motor, meaning it is built to move a large volume of air over a long, controlled excursion while keeping its cone rigid and its motor force consistent across that travel. A sandwich cone bonds stiff skins to a lighter core, producing a structure that is stiff enough to resist flexing yet damped against resonance, so the cone behaves as a piston rather than deforming as it moves. That pistonic behavior keeps low frequency distortion down and preserves pitch definition in the bass.
The ultra linear long stroke description points to a motor with a symmetrical, well controlled magnetic field along the voice coil's range of travel. Linearity here means the force pushing the cone stays proportional to the signal whether the cone is near rest or at the extremes of its excursion. That symmetry reduces the even order distortion that makes bass sound thick or one note. Extended range indicates the woofer is designed to reach well up into the midrange before handing off to the horn, which minimizes the number of crossover transitions in the band your ear is most sensitive to.
Why is it a side ported bass reflex design?
The Ymir uses a bass reflex alignment with the port mounted on the side of the cabinet, which extends low frequency output by tuning a vented enclosure so the port radiates in phase with the woofer near the tuning frequency. In a reflex box the air mass in the port resonates with the compliance of the air trapped in the cabinet. Near that tuning point the port takes over much of the radiating duty, reinforcing the low end and reducing woofer excursion exactly where excursion would otherwise be greatest. This is what lets the speaker reach its rated low frequency limit while keeping distortion in check.
Placing the port on the side rather than the front or rear is a deliberate integration choice. It keeps the front baffle clean of port turbulence artifacts and gives the installer flexibility in how the port couples to nearby boundaries, since side firing output interacts differently with room walls than front or rear firing output. The stated frequency response of 26 Hz to 23 kHz shows the practical result, genuine deep bass extension from the reflex loaded woofer at one end and airy treble from the horn at the other.
Build, Materials, and Power
Why does the Ymir weigh 264.5 lbs each?
The Ymir weighs 264.5 lbs each because a horn loaded flagship demands a massive, inert cabinet to do its job properly, and that mass is a functional requirement rather than a vanity figure. A loudspeaker cabinet has two enemies, panel resonance and cabinet motion. Every time the woofer pushes its cone forward, Newton's third law pushes the cabinet backward, and if the cabinet moves it smears timing and adds coloration. High mass anchors the enclosure so the energy goes into the air instead of into the box. Heavy, well braced panels also raise the frequency and lower the amplitude of any structural resonances, keeping stored energy from bleeding back out slightly delayed and muddying the sound.
For a horn, rigidity is doubly important. The horn walls themselves must not flex or resonate, because any wall motion becomes part of what you hear. A dense, stiff structure keeps the horn's acoustic behavior true to its designed geometry.
What amplifier does the Ymir need given its 94 dB sensitivity and 8 ohm impedance?
With 94 dB sensitivity and an 8 ohm nominal impedance, the Ymir is friendly to a very wide range of amplifiers, including low powered tube designs, and it does not require a high current behemoth to sing. The 8 ohm rating is a benign load that most amplifiers drive comfortably without stress, and the high sensitivity means even modest wattage produces satisfying levels. This is one of the practical joys of a well designed horn system. It liberates you to choose amplification for its sonic character, such as the immediacy of a single ended triode or the refinement of a well built class A design, rather than being forced toward raw power. Because the speaker asks so little of the amplifier, subtle differences in amplifier quality tend to come through with unusual clarity, so system matching becomes an expressive tool rather than a constraint.
What are the dimensions and how do they affect placement?
The Ymir measures 45.1 inches high, 15 inches wide, and 20.8 inches deep, a tall but relatively narrow footprint that reads as a substantial full range floorstander. The moderate width helps the baffle stay acoustically manageable and supports the horn's directivity control, while the depth accommodates the internal volume the reflex loaded woofer needs. Given the side port, you will want to pay attention to how the ported side relates to the nearest wall, and given the horn's constant directivity, toe in and listening distance should be dialed in so the controlled coverage window aligns with your seat. The combination of high mass and this footprint means the speaker sits firmly planted, which supports the low frequency performance by keeping the cabinet still.
Position in the Lineup
Where does the Ymir sit in the Ø Audio range?
The Ymir sits at the very top of the Ø Audio lineup as the flagship, the model where the brand's horn loading philosophy is pursued without compromise. It is the fullest realization of Ø Audio's core beliefs, high efficiency, controlled directivity through the Quad Vertex Sound Field horn, advanced diaphragm and cone materials in carbon fiber, and a cabinet massive and rigid enough to let those transducers perform at their best. For the experienced enthusiast, the Ymir is best understood as a statement design that rewards careful amplifier selection and thoughtful room integration with the effortless dynamics, low distortion, and coherent imaging that only a properly executed horn system can deliver.
