I threw some beta15s into my theater 4 corner horns (tall, wide and thin 5 cuft box, tuned to 40hz) and they sounded really boomy (in corners and out).

Boxplot says that the beta in a 5cuft/40hz box should only have a 4db bump at 80hz which should sound good and punchy. For some reason that's not what I heard?!? Go figure??

Give it a try and tell us what you hear.

Regards,
Jeff