Aurasound Subwoofer
Designed and built in 2000 to match Borealis speakers, here
Vented subwoofer built using Aurasound 1808 (18") subwoofer.  Cabinet is 5 feet tall, veneered in zebrawood.
View without grille, showing woofer and vent.
Photo of rear of woofer in cabinet, showing woofer magnet structure and cabinet bracing.
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