That's a really long story, and probably the articles and forum posts you're already reading online have all the gory details, but they probably don't speak about the Maverick B&O specifically.Reading a little about sealed enclosures vs infinite volume. From what I'm reading a sealed enclosure makes the bass 'tighter' and more true to the original music while the infinite volume makes it more 'booming'. Since this threaded started out with discussion of the Dayton Audio DCS165-4 6-1/2" being retrofitted into the original 'infinite volume' Maverick enclosure I was wondering what would be the result of putting this speaker in a sealed enclosure. Several sites have recommended a enclosure volume of 0.2 to 0.25 cubic feet, which is small enough to fit in the original space behind the seat.
Need an audiophile to help explain the differences and if a sealed enclosure is better or worse for the Maverick.
I believe that the reason the Maverick B&O 6x9 'sub' is infinite baffle is because of the power the amplifier produces and because of the space that Ford wished to allocate to it. If they used a sealed enclosure it would have to be significantly more volume to perform properly and it would need more power. Without knowing the B&O amp specs, I can't guess as to how much more, but let's just say it would take a bigger fuse and more expensive amplifier.
A subwoofer cone moves air to make sound. The larger the cone and the more excursion (travel) it has, the more sound pressure it can make. It takes more power, displacement and excursion to play lower notes that's why subwoofers are larger than midrange, and why a 15" woofer has advantages over an 8" woofer playing 20hz. (That's not to say an 8" can't play 20hz with good output. Properly designed, they can. Still, the 15" has advantages.)
Infinite baffle speakers take less power to move the cone, but they offer less output because the rear sound waves are completely lost -- unless you're laying under the Maverick where the port comes out, LOL.
If you replace the factory sub completely with a separate amp and subwoofer box, I cannot imagine any scenario where someone would get a better result with infinite baffle than you would sealed. Some of the sound you're hearing in a sealed enclosure is in fact coming from the rear of the speaker.
Ported enclosures require more air volume than sealed, and they have a port tuning frequency that makes their output less linear than a sealed woofer, but in that tuning range, their output is higher because the rear waves from the woofer cone are getting used more effectively. The main reason almost everyone has a sealed sub enclosure in a Maverick is the air volume required for ported.
(EDIT: I re-read this and made a bunch of edits because my original, hastily-typed reply was not clear on several points I was attempting to make. Hope it's useful now.)
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