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<blockquote data-quote="Papermaker85" data-source="post: 8469474" data-attributes="member: 572595">if you use 6 12s you can go 45wx38hx23d with a port running along the bottom 42W(internal)x5(internal;double baffled)Hx15L and 5(internal;double baffel as well)x12 for the L portion.. i prefer to build the face of the box to cover the port. this lets you screw through the face INTO the port wall. its easier this way.. so the face should be 45x31.5 the back should be 45x38 then top and bottom should be 45x20 and the sides should be 20x35..split the port into 3 even sections of 13.5. brace the port with 2 pieces 5&quot;w x 20&quot; long and 2 peaces 5&quot;w x 12&quot; long..measure 13.5 from one edge inside the port draw a line and flush the braces even with that line so it measures 13.5 inside to inside.. repeat for the next peace.. the 3 port holes should all measure 13.5 inside to inside.. this will brace the **** out of the port/box and help breakup standing waves.double baffle everything except for the port braces. its going to be PLENTY strong.. the port bracing will lower you tuned to about 35 and should give you right at 12 cubes with 33.75 per woofer which is plenty..in each corner of the box. cut a peace of wood 45 degrees on each side 5 inches wide. screw then into each corner including the ports corner.. this helps increase output and lower group delay.use a brace between each set of subs.Note bass box pro is stupid sometimes. im gonna triple check..</blockquote>

[QUOTE="Papermaker85, post: 8469474, member: 572595"] if you use 6 12s you can go 45wx38hx23d with a port running along the bottom 42W(internal)x5(internal;double baffled)Hx15L and 5(internal;double baffel as well)x12 for the L portion.. i prefer to build the face of the box to cover the port. this lets you screw through the face INTO the port wall. its easier this way.. so the face should be 45x31.5 the back should be 45x38 then top and bottom should be 45x20 and the sides should be 20x35.. split the port into 3 even sections of 13.5. brace the port with 2 pieces 5"w x 20" long and 2 peaces 5"w x 12" long.. measure 13.5 from one edge inside the port draw a line and flush the braces even with that line so it measures 13.5 inside to inside.. repeat for the next peace.. the 3 port holes should all measure 13.5 inside to inside.. this will brace the **** out of the port/box and help breakup standing waves. double baffle everything except for the port braces. its going to be PLENTY strong.. the port bracing will lower you tuned to about 35 and should give you right at 12 cubes with 33.75 per woofer which is plenty.. in each corner of the box. cut a peace of wood 45 degrees on each side 5 inches wide. screw then into each corner including the ports corner.. this helps increase output and lower group delay. use a brace between each set of subs. Note bass box pro is stupid sometimes. im gonna triple check.. [/QUOTE]

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