2 f20 subs built from 3/4" Baltic Birch plywood, and then skinned with 1/2" Mesquite hardwood. Stainless steel wood screws on 4 of the 6 sides are to provide for mounting in almost any configuration...upright or on sides. Woofer is a Ultimax 15". Wiring 12TC with Speakon connectors (to be installed shortly).

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