Yes I read it, fine, then to you I am an Idiot.//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif Whatever makes you sleep better at night. Maybe I'll try the sub in a sealed box, see how it sounds, I'm sure great, while I lose output out the ***:thumbsup:
Sure, you'll lose output within about 1 octave of tuning, but you'll gain output below, and experience virtually no loss in output above. You seem to assume that ported = a gain at ALL frequencies, but that simply isn't the case.
Why would you prefer overexaggerated output at a few frequencies rather than accurate, correct output at all frequencies? In the proper sealed box in a car, the XXX 12 will have virtually flat response from 10Hz to at least 80Hz or so, although the topend is somewhat dependent on the vehicle itself.
PREFERRING ported to sealed is one thing, and I don't think you're an idiot if you PREFER ported to sealed, just if you think that vented is more ACCURATE than sealed, because it quite obviously is not for virtually all woofers in an automotive environment.
So, again, PREFERRING a particular sound is one thing, but assuming that what you prefer is anything resembling remotely accurate sound reproduction is quite another.
Sealed boxes offer vastly superior accuracy to the source material for virtually any woofer in an automotive environment, due to the transfer function of that environment.
Why do you need to GAIN output at any frequency when you have FLAT response already? With a large sealed box you can even still have exagerrated output below 30-35Hz or so, although it doesnt have the massively inaccurate and unfaithful peak exhibited by most vented enclosures in an automotive environment.
The XXX 12 is going to exhibit a fairly significant peak in its response between 30-40Hz in most vented enclosures in a car. This does NOT correspond to the natural lack of sensitivity to low frequencies exhibited by the human ear at all. If you wished to compensate for that, you would want a steadily increasing response, NOT a peak in that area (your ears have virtually NO deficiency in the 30-40Hz range, its only below 30Hz that you start needing ever increasing output to make low frequencies "feel" as loud as the higher frequencies).
If you switch to a sealed box, YES, you will notice less output in the frequency range your vented box was tuned to, and you will experience GREATER output below tuning, and virtually the same response when you get very far above it. You will also get superior transient performance from the sealed enclosure.