![]() ![]() custom internal wiring and newly designed harness improve the layout along with a modern circular rear compression chamber for the lower mid bass horn driver. combined with the black wrinkle finish frames and black slate water jet cut grills for the twin bass modules, the latest ‘imperia’ offers maximum contrast in materials. only the light colored sap wood was used from each tree, which greatly increased the amount of labor involved in fabrication. The latest iteration features natural pennsylvania ash and is finished in had rubbed oil and way, to preserve the wood’s natural light color. the high frequency horn is cast by OMA from aluminum alloy and the outboard crossover network is coupled to the ‘imperia’ through a solid slate patchboard. Cogent makes a bass driver for use in a bass horn extending down to perhaps 60Hz and a high-frequency driver for use. The drivers we were hearing were the Cogent field coil compression drivers which are modern devices inspired by the rare and wonderful RCA 1428 field coil theater compression drivers. the midrange horn uses the cogent field coil compression driver. The Cogents are remarkably laid-back with. designed by david d’imperio, the wooden conical horns are made from a choice of solid pennsylvania black walnut, cherry or ash. ![]() the ‘imperia’ is a four way horn system with a vertical series of conical horns covering 100Hz to 20kHz, and two rear loaded subwoofer horns using a massive 21 inch neodymium woofer handling 20Hz to 100Hz. Instead of following current trends and embracing cutting edge technology, OMA audio always looks back to create audio equipment. OMA audio looks back at gramophone design for imperia horn seriesĪll images by cynthia van elk for OMA audio ![]()
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