No.
And below to what? How high will your sub play? Some run their subwoofers up past 100hz and use high efficiency, low xmax, dedicated mids to provide "punch" and impact around 200 hz and then let their MR's take over from there on up to their tweeters. Some run 2-way systems up-front and run their mids from 50-5khz. All depends on install, budget, goals, etc.
Okay...I have Dynaudio MD130 Tweeters that will be mounted on axis with Dynaudio Esotar2 430 (3.5" midrange) off the a-pillar which can play down to 250hz. I currently have Dynaudio MW160's (6.5 or 7" depending on who you ask) midbass in the doors of a 1998 Pontiac Firebird in an enclosure with an AP mat on the back & just purchased MW182's to either resell or use. The 182's are 9.5" midbass woofers. I can either mount in the doors (with some work) or the kicks (also with some work). Just trying to decide which would be better to use. I currently run my 160's to about 65hz 18db and the subs come in from there.
That's my official vote.
Would you suggest door with ap mat or kick sealed?That's my official vote.
Kicks for sure if you can. Greater path lengths, more on axis, more sturdy structure to build off of. Enclosure type depends on the driver response. You'll have to model them and see what you get.
Now, the other thing is, I have tons of room behind my front fenders that I can build a sealed enclosure and vent the kick to...the only thing I am concerned with is the door puts the mid pretty far forward already and in that car the way you sit the mid fires over your legs and in front of the dash whereas the kick would be buried under the massive dash with legs more in the way. Should this even be a consideration or will the sealed enclosure output make up for the other items?
Search "Circle of Confusion" by Werewolf.
More like how long the path lengths from 250 hz and down are. So at 4.5' and up you need something pretty massive or substantial to affect them in a negative way. If they can make it though/around a plastic door panel I think they'll make it around the underside of your dash, some carpet and your legs too. Just how I think of it. Search and read the above link by Werewolf for sure.
Thanks for all the help/advice. I should have plenty of room in the kicks for airspace after I build the enclosure in the fender area. I think the MW182's would help to give me what I am looking for.
http://www.diymobileaudio.com/forum/diy-mobile-audio/17874-dashboard-domes-rear-mounted-midbass-rear-fill.html200Hz is localizable, but only to the extent determined by ITD. Therefore any point on a circle, whose plane is perpendicular to a line drawn through our ears, is indistinguishable from any other point on the circle.
In other words, you can chop off your outer ears for midbass frequencies. What, then, distinguishes "front" from "back"? Besides your eyes, of course
In still other words, all places "behind" you are not equally good ... just as all places "in front" of you are not equally good. It is true that a midbass driver directly behind your head is indistinguishable from a midbass driver directly in front of your head ... but a midbass directly in front of your head is not optimum for stage width
All of these points become obvious by simply understanding ITD, and the simple geometry of a circle
In practise, the illusion is ruined by driver distortion, or panel vibrations, generating frequencies higher than you intend ...
edit : and this whole argument is completely separate from a "rear fill" discussion, which revolves around delayed, perhaps L-R processed, higher-bandwidth drivers located behind you in the ambient field.
