after a small amount of research into building a cab for my 115 Scorpion speaker i emailed Aubrey Fulton from Peavey and this is what he said... Hello, I recommemd copying the 115BVX. It has a frequency response of 30 Hz to 3500 Hz. A low B note is 30.8 Hz. Dimensions: Width - 24.5" Height - 27.5" Depth - 17.5" Cubic feet - 5.28 ( or 150 liters ). Speaker is located top/front/center about 2 ½" away from top of front baffle. Round Port located front/bottom/left corner. And about 2 ½" away from the side and bottom of the front baffle. Port size = 6" diameter and 5 3/8" deep/total. You can use PVC for the tube and make a dado where the tube goes into the front baffle and butts up against the hole inside ( like a step ).In this example the bottom line is the outside of the front baffle and the top line is the inside of the front baffle. The two "I"'s are the tube. -_--I_I--_- . Notice the tube doesn't go all the way out to the front edge of the front baffle. We typically use a SP 15425 ( 4 ohm ) but you could use a SP 15825 Scorpion speaker for 8 ohms. Thiele Small parameters: SP-15425: Re-3.33 Fs-51.7 Hz Qms-6.95 Qas-.685 Qts-.623 Vas-142 ltr So-760cm2 No-2.82% Xmax-N/A i can't belive how helpful he was, but anyway i am wanting to know if the 115BVX sound a bit loose and boomy or if its tight and punchy??