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About the ULTRA.9
The Von Schweikert Audio ULTRA.9 is a flagship six-way, eight-driver floorstanding loudspeaker designed for full-range, high-dynamic-performance reproduction. It uses a sealed enclosure, a physically time-aligned front and rear driver layout, Von Schweikert’s Global Axis Integration Network (G.A.I.N.), Acoustic Inverse Replication (A.I.R.) technology, passive room-correction controls, Rear-Ambient Retrieval, and MasterBuilt ULTRA internal wiring. Each channel combines twin ceramic mid-bass drivers, a ceramic midrange, a beryllium-dome tweeter, front- and rear-firing ribbon super-tweeters, a rear ambient tweeter, and a powered 15-inch sealed subwoofer. Published specifications vary between model revisions and sources: the manufacturer currently lists 16 Hz–40 kHz, 500 lb per speaker, and a 1,000-watt RMS internal subwoofer amplifier, while earlier reviews list up to 60 kHz, approximately 535 lb per speaker, and slightly different driver descriptions.
Specifications
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