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Oswalds Mill Audio Monitors

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Product Description

The newest OMA speaker is The Monitor, designed to be the finest, most accurate two way mid field monitor speaker possible. The design is inspired by historical studio monitors, used by producers, engineers and musicians to create music. 

OMA's The Monitor aims for accuracy in both the frequency response domain and the time domain. In other words, The Monitor is not just smooth and flat but extremely accurate in conveying the timing of music. 

This two way design uses a new professional AMT (air motion transformer) tweeter, originally designed by Dr. Oskar Heill 50 years ago, and made for OMA in Germany. The revolutionary AMT design results in sound propagation up to five times the speed of conventional drivers, with ultra low distortion. Coupled with the professional 12" woofer, both drivers are mounted to a front baffle of 1" thick Pennsylvania slate, ensuring that any vibration created by the driver's motion is damped and dissipated. 

The enclosure is solid, 1" thick Pennsylvania walnut, cherry, maple, chestnut or ash (dyed, natural, or thermally modified). Joinery is hand cut dovetails. 

The Monitor is available with a choice of optional stands in different finishes. 

Efficiency is approximately 100db/1w/1m.


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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