- On sale!
B-Stock: Ultra-X13 Subwoofer
Out-of-Stock
We have a some discontinued Ultra-X13's available for sale! These have been tested for functionality, are a final sale, and come with a 30 day DOA (no warranty). These units will have minor blemishes. Act fast!
Sales to the 48 States only!*
*California Excluded
The Ultra-X13 is our most advanced subwoofer. Designed to meet the demanding specifications of THX, the X13 will deliver "reference level" 115 dBSPL with remarkably low distortion. It was the first subwoofer in North America to meet this standard with a single sub.
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