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Simplexx 18 Flat Pack Subwoofer

Price: USD $249.95
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Simplexx 18 Subwoofer DIY Speaker Flat Pack

The easy to build high perfomance subwoofers

Kit Contents

Simplexx 18 Subwoofer Flat Pack

The Simplexx 18 flat pack kit gives you precision precut plywood needed to build your cab. 

  • Baltic Birch 1/2 plywood precut for easy assembly
  • All the small complex parts are done saving enormous time in building.

Please allow 10-14 business days for delivery.

Complete details and plans are available from

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Shipping & Inventory Update

The wood shop is currently on hiatus until Sept 19th. 

No flat packs will be started until after then.  Your order will be placed in the queue in the order received. We will advise at that time expected delivery times, and your place in the cut queue.  Thank you for understanding.