Is "Break in" Really necissary?

[audioholic 5,000+ posts]

doesnt it change with enclosure types also

Only to the extent to which the enclosure controls cone motion, as this cone motion (more specifically the motion of the coil within the gap) is what changes the speaker's impedance. This factor is also completely irrelevant to the amplifier or its performance in high output situations. //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif