Port Compression
Port compression is a reduction in port effectiveness as sound pressure levels increase. As a ported system plays louder, the efficiency of the port reduces, and distortion emitted by the port increases. This can be reduced by port design, but not totally eliminated.
Asymmetrical loading of the driver cone during high level usage can be reduced by placing a baffle at the inside end of the port tube. This baffle can also serve as a stiffening structural element of the enclosure.
Read more about this topic: Bass Reflex
Famous quotes containing the words port and/or compression:
“Through the port comes the moon-shine astray!
It tips the guard’s cutlass and silvers this nook;
But ‘twill die in the dawning of Billy’s last day.
A jewel-block they’ll make of me to-morrow,
Pendant pearl from the yard-arm-end
Like the ear-drop I gave to Bristol Molly—
O, ‘tis me, not the sentence they’ll suspend.”
—Herman Melville (1819–1891)
“Do they [the publishers of Murphy] not understand that if the book is slightly obscure it is because it is a compression and that to compress it further can only make it more obscure?”
—Samuel Beckett (1906–1989)