Want to get some input from people here. I will cut and paste a bit from an email thread I had with TC-Sounds because I could not find box specifications for the LMS-R.
My Box maker (Andrew) and myself have a few questions about your LMS-R driver in a car audio application.
Application: BMW 330Ci Trunk
Supporting: JL 1000/1 Sub Amp, Focal Components on a JL 300/4
Driver: 12" TC Sounds LMS-R
Needs: To sound great and actually hit 20 hz but it certainly does not need to be flat down to 20. I'd like to see an application where sound quality prevails over sheer output. This is going into my Girlfriends car so raw SPL is not a huge priority but It should absolutely pound when called upon.
84 cu Ft3 internal cabin volume with 14 ft cu trunk space. The rear seat will be used in their upright position so the LMS-R driver will most likely on 'see' about 14cu ft.
We do have a few dimensions to work around ( can only be about 15" high and 28" wide)
but as long as we have a general suggestion for a relatively flat frequency response we can easily get that built within spec.
I have a profession box maker that will build the Box based on your recommendations
Box Size Suggestions: ?
Port area: ?
Tuning Frequency: ?
Other suggestions: ?"
My recommendation would be to go with the 28Hz tuned enclosure, as attached.
The actual enclosure volume should be 2.3 cubic feet, since the ports take up 0.5 cubic feet, for a net volume of 1.8 cubic feet.
The ports should be two 4" diameter ports, 36" long each, which means that you will need to use 90 degree elbows, available at home depot.
Alternatively, parts express has a full 4" diameter flanged port system, with 90 degree angle parts.
Hope that helps."
The attached images are what Thilo attached in his response.
Bought: davidt487,kn0wledge000, Newarkbeast973,
markt3307, Fritosaregood, TnT_Sounds, Zeuslicious
Sold: Wicked92503 + Neelswheels + Tandrel + Focusedfornow + dadydolas+ Ryan Shaw