Don't do this, coral supplied cabinet designs for the 12tx ect models, I also own a pair of 12tx-50 but I believe mine may be an early prototype because they are 8 ohm variations and no spec sheets or internet blurbs on forums ect of the speaker mention a consumer marketed 8 ohm version, I came across this at such a late hour I don't have the time to post a picture of mine or any other information on this but I will dm you a copy of the spec sheet and pictures of mine which I would recommend a very close match of for sound quality in the low end, one important thing to mention is they are 32" tall and around 20" wide and deep (will provide exact measurements including port size tomorrow) so waf may be an issue for you as I don't know your current situation but if fidelity is your worry I will not steer you in the wrong direction, it is also important to note if you've been trawling through audio heritage and the like that these speakers "are" capable of producing subsonic frequencies down to 18hz with an impressive 92-94db/1w efficiency however don't ride on utilizing them this way as the driver impedance spikes to nearly 100 ohms at 20hz and doesn't stabilize down to around 10 until right around 100hz, granted most music rarely reaches that extreme unless you prefer electronic but if you're going for that being part of your listening experience either way preferably a dual subwoofer add on placed adjacent to each other in front would be optimal.
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