How do you calculate midrange enclosures?

Ive been searching for a way to calculate an enclosure size based on the parameters, but only find ones for woofers.. What Im looking for is best midrange enclosure size. How do I create a near perfect size/type enclosure for mids, to get the best performance/SQ..?? I know sealed is usually best, but doesnt the enclosure size and design affect speaker output..?? Im thinking of a setup similar to Velocity Motor(sports?) setup in the same model Integra.. 3-way setup and I was considering the DEI 3055/3084.. also if anyone has any specs one either models, I cant find any.. as with most DEI products..!! With the 3084, does the crossover completely independent or do I hookup its output to the input of the 3055 to make a 3-way, and what are the crossover points..?? Any info/help will be very much appreciated..

Personally, I never took much note in Midrange applications. Bass, yeah, but not midrange. Midrange could be anywhere from 500Hz and up to 12Khz. . . If you are going midrage ONLY, then make sure you have a speaker that does not have a tweeter on it, just a single cone speaker. If you want a good midrange, get a speaker that still has some throw in it, so it doesn't crack-up with heavy bass in some music.

The reason Im looking to make a very good enclosure is because of a review I read on some site, where their experience was weak midrange but when placed in an enclosure (instead of free-air in the door) the midrange had "warmth" of something like that.. well, specs are: Model #3055      Fs (Hz) - 79.64 Vas - 0.18 ft3 - 5.18 L Qms - 6.8 Qes - 0.60 Qts - 0.55 Xmax - 0.12 In - 2.5 mm freq. range - 45-6k (but I think crossover is 5.5k) Im just worried about chokin my mids..!!

I have previously taken a class on designing speaker enclosures. The class was supposed to be based around all speakers, but I believe that it was directed mainly toward midrange and some home applications, because the frequency curves we were dealing with. There were no high peakes as expected for boxes intended with subs. With this said, your speaker have a very low "Qts", which makes all "recommended" enclosures large. The Qts spec, is relative to the dampening of the cone.... er cone movement in free air applications. The lower the Qts, the harder it is to get the cone moving in free air. Therefore, if you were to put that speaker in a SMALL enclosure, it would make it even harder to get the cone moving. That stated, I would have to say that it should be fine to put them in the doors alone. Unless you want to have a ported enclosure constructed for your midrange speakers. Another option would be to go with an Aperiodic Enclosure, being that the Qts of the speaker is below .71 . I would advise the reading about them on    www.elitecaraudio.com   Just search for Aperiodic Enclosures and you will find the post. I tried calculating enclosures before I looked into the Qts spec, and was getting enclosures over 2-3 cu ft, which is not desiranable. However about the airspace of a door.