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Oswalds Mill Audio Mini horn loudspeakers

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Product Description

The Oswalds Mill Audio Mini is a unique 2-way horn based speaker with the performance of far greater sized speakers. The main enclosure is a 35cm cube, and the speaker stands 145cm tall. 

Come and experience these at Krispy Audio today! 

Our design goal was to achieve similar performance and the signature sound of our larger speakers, in a small package. The OMA Mini is a high efficiency speaker, at approx. 95db/1w/1m, and is 8ohm. You can use just about any amplifier with the OMA Mini, from low powered tube amplifiers to high powered solid state amps, as the OMA Mini uses professional drivers designed to handle a lot of power. These types of professional drivers offer far greater performance, and bullet proof reliability. 

The Mini uses our proprietary conical horn, designed for the neodymium compression driver selected to achieve optimal performance, and is cast in aluminum for OMA by a foundry in Pennsylvania USA. The woofer enclosure is crafted from bamboo or solid Pennsylvania hardwoods: walnut, cherry, chestnut, ash, thermally modified ash and tiger maple are all available. We also offer dyed maple and ash. The finish is hand rubbed oil and wax.

The Mini uses a front ported design that mitigates room placement issues found with similar speakers (which port from the bottom or rear). This porting results in superb musical and overall response integrity. 

The Mini, like all OMA loudspeakers, is constructed by hand in Pennsylvania. Its stands are constructed from solid .25 inch carbon or polished stainless steel, with the carbon steel powder coated in a variety of finishes, including black wrinkle, white semi gloss, and copper plate, as are the horns. You can mix and match stands and enclosures to your preference. Custom color, wood type and finish are available on request.

A matching 15" subwoofer is available to compliment the OMA Mini as well.


Height 145cm
Width 35cm
Depth 43cm (base footprint)

Frequency response: 50hz-20Khz.


Horn speakers in general are a breed apart from conventional loudspeakers, which radiate sound in all directions. Horn speakers are both far more efficient than conventional ones, and also directional, which means that the music is aimed where you want it, not reflected in every direction. This dramatically reduces negative room interactions, which is very important, but the overall effect is to give a sense of lifelike, natural effortlessness to the music itself. Many people who listen to OMA speakers for the first time say the same thing; they did not believe reproduced music could sound so good. 

From a more technical standpoint, there are simple reasons for this. OMA is the only hifi company in the world today which relies solely on the conical profile in its horn designs. The conical profile, meaning the horn walls have straight sides, does not deform the spherical wave of sound created by the horn.


All OMA products are made within a very small area of Eastern Pennsylvania, the part of the United States which gave birth to the industrial revolution and which continues to excel in small manufacturing. Our horns are cast at a local foundry, our slate comes from the last quarry in Pennsylvania, our wood is from the surrounding forests. Many of our products are entirely hand made by skilled artisans, and yet we also use cutting edge technology like five axis water jet machining. 


Our acoustical designer Bill Woods has been designing horn loudspeakers professionally for over 35 years. He is one of a handful of the world's top experts on horns. Once Bill has set the acoustical parameters for a proposed speaker, such as the size and flare of the horn or horns, enclosure volume and geometry, selection of drivers, etc, OMA's industrial designer David D'Imperio is tasked with creating a visually arresting design that maintains it's acoustic integrity. The history of loudspeaker design shows that aesthetic beauty and acoustic excellence have rarely occurred in the same package. D'Imperio creates an individual identity for each speaker design, following from its acoustic goals.

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