Bass IS non-directional, but
>that's just because of its frequency (its wavelength is >LARGE). The air
>DOES in fact help the bass propogate throughout the >cabin. Why do you >think
>big speakers w/ woofers have port holes?"
Sorry, but you are wrong. The holes are vents to allow air to fill the area BEHIND the speaker, so that the speaker cone itself doesn't distort. A cabrio trunk leaks more than enough air to allow this. If you need an example, think large 6x9 speakers in the rear of most sedans. The back of the speaker does not need to be "vented" to the passenger compartment, and more than a speaker in the door does