Drawings are not to scale. Use 3/4" MDF for all except mid enclosure which uses 1/2" MDF. You may find it easier to add the midrange enclosure after the front baffle is attached. You may also use 3/4" MDF for the top part of the mid enclosure for better bracing between the front and rear baffle.
Front Drawing
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Rear Drawing
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Top/ Bottom/ Mid Drawing
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