First TH Build

Hey all! Ive been using this forum for info for a long time but just now made an account because I havent seen some of my questions answered. Ive build a few sealed and ported subs (home and car) in my day as well as some DIYSG speaker kits. I understand most of the fundementals but Im by no means a speaker designer.


I like to rock out in my garage and I tend to listen to some obnoxious, bass-heavy music. Ive got a blown driver in one of my current subs so I want to build a pair of TH subs to replace them.



A couple points to note on this setup. My garage is not big enough. I have no floor space to spare. My current subs are 2-cu. ft. slot ported 12s tuned to 34hz with Image Dynamics IDQ 12 car subs. They are mounted in the top corners of the back wall of the garage. They actually dont do too bad but one driver has had enough of my nonsense. I want to retain the same positioning. (unless I put the subs in the attic and have the horn mouths exit through the ceiling), so my maximum dimensions are about 20x30x40".



Im currently pretty set on the Martinsson TPAM10HTL but Id like to see what people think of an easy-to-build 6th order or TH design that uses a reasonably priced 12" driver. Has anyone reworked this design for a 12?


Thanks for any input. I love this forum!