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<blockquote data-quote="djman37" data-source="post: 4272776" data-attributes="member: 554697">Brace for any area larger than 1 sq ft.&nbsp; All axis need bracing; X, Y and Z.&#039;Window frame&#039; bracing is one way.&nbsp; It works well since it should match your side piece measurement already.&nbsp; It doesn&#039;t require any more tools that you&#039;ve already used for the initial box contstruction.&nbsp; Cut either sqares or circles to make panes that leave the structural integrity of the axis intact.&nbsp; This also gets two of the three axis.Triangles from the sides can help, 4&quot; wide brace pieces can add strength to long spans.Other methods work too, large dowels, and triple thick MDF pieces can be used.All-thread and such methods require you to cut through what you are trying to make stronger.I&#039;m not a fan of the double baffle because of the weight to strength ratio.my .02&nbsp; Good luck.when you tap on the box with your knuckles, it should sound like concrete with a very high resonance, not low and boomy.&nbsp; Tap on a well constructed home speaker and see what it sounds like.</blockquote>

[QUOTE="djman37, post: 4272776, member: 554697"] Brace for any area larger than 1 sq ft. All axis need bracing; X, Y and Z. 'Window frame' bracing is one way. It works well since it should match your side piece measurement already. It doesn't require any more tools that you've already used for the initial box contstruction. Cut either sqares or circles to make panes that leave the structural integrity of the axis intact. This also gets two of the three axis. Triangles from the sides can help, 4" wide brace pieces can add strength to long spans. Other methods work too, large dowels, and triple thick MDF pieces can be used. All-thread and such methods require you to cut through what you are trying to make stronger. I'm not a fan of the double baffle because of the weight to strength ratio. my .02 Good luck. when you tap on the box with your knuckles, it should sound like concrete with a very high resonance, not low and boomy. Tap on a well constructed home speaker and see what it sounds like. [/QUOTE]

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