Quote Originally Posted by GM View Post
For some reason I thought you cloned Jay Fisher's MLTL, but the driver is in the wrong place, so to answer your Q I need to know the cab's net Vb and the port's length.

GM

Thanks GM. Indeed, I did clone Jay Fisher's MLTL. He was incredibly generous with his time and advice, and actually guided me through the construction details.

His instructions were explicit; to mount the driver so the center was exactly 19.625" from the inside top of the cabinet. The cabinet's internal height is 42.5" and my cabinet maker adhered strictly to these dimensions.

Best I can tell, if you take the insulation into account, the cabinets are around 9.9 cubic feet. They are around 10.4 cubic feet in raw dimension. Jay told me to keep the CSA at around 426. Currently the port is 6" in diameter, and 3/4" long (basically, the width of the bottom panel). I also have the 3 ohm resistor in place as instructed.

Jay's instructions were to have the port 6" round, and 2" in length, but I have not trimmed the 6" x 6" port tube inserts that I bought. I tried inserting them into the port hole, but they had no affect. I can't imagine trimming them down to 2" would matter, but again, I'm a complete novice with this stuff!