Hi All
A newb here... I've been lurking and searching my around for a bit.
In the past, I managed to build a TL with some Vifa TG9FD with actual success. I was a bit skeptical with my woodworking and math skills but managed to get through the project and am quite happy with the results.
Along the way I got and idea to build a OB and somehow ended up with a pair of Beta 12CX, ASD1001, & PXB2:2K5CX and Alpha 15a's...
At first I was thinking of something like a PAP design but I think the optimization are beyond my scope, space and budget at this point...
I was thinking of building two H-frames, one for the 12CX/ASD1001 and one for the Alpha 15a's (w/ passive filter)... stack them and voila(?)... I couldn't find any info about putting a tweeter/coax into a H-frame so I was unsure how or if I should proceed. I will most likely also run into space issues...
Then I started looking into a TL design. When I built the TG9FD pair the 1/4 wave length was short enough for me to build a box that was resonable in size (basically a 'pensil').
A TL for a 47Hz speaker is really long....
I used HiFi Loudspeaker Design to get a rough idea for this driver but am unsure of options for orientation and port placement. The drawing that the calculator shows (from what I can tell) a folded TQWT design, but with the port on top. My issue/concern is I would not want the port on top. I'm not sure if the port could be ran out the back, or if it could be diverted to the front? I'm guessing the drawing is a reference? or does the port have to go out the top or bottom (if I flip it upsidedown) of this design?
I've been trying to remember all the details and find my notes from my TG9FD build to give me some clues but we renovated and its been a couple of years (yes these parts have been sitting in boxes for a couple of years) I can't find a thing....
Any help of suggestions would be greatly appreciated...!
Thanks!

A newb here... I've been lurking and searching my around for a bit.
In the past, I managed to build a TL with some Vifa TG9FD with actual success. I was a bit skeptical with my woodworking and math skills but managed to get through the project and am quite happy with the results.
Along the way I got and idea to build a OB and somehow ended up with a pair of Beta 12CX, ASD1001, & PXB2:2K5CX and Alpha 15a's...
At first I was thinking of something like a PAP design but I think the optimization are beyond my scope, space and budget at this point...
I was thinking of building two H-frames, one for the 12CX/ASD1001 and one for the Alpha 15a's (w/ passive filter)... stack them and voila(?)... I couldn't find any info about putting a tweeter/coax into a H-frame so I was unsure how or if I should proceed. I will most likely also run into space issues...
Then I started looking into a TL design. When I built the TG9FD pair the 1/4 wave length was short enough for me to build a box that was resonable in size (basically a 'pensil').
A TL for a 47Hz speaker is really long....
I've been trying to remember all the details and find my notes from my TG9FD build to give me some clues but we renovated and its been a couple of years (yes these parts have been sitting in boxes for a couple of years) I can't find a thing....
Any help of suggestions would be greatly appreciated...!
Thanks!