Subwoofer-specialized speaker

A subwoofer is a speaker that produce low frequencies sound(20hz to 200hz),or called bass.Subwoofer using a higher power to work.The more the radius of the subwoofer cone,the more the power is needed to work .Example like a 3.5' subwoofer need approximate 10W of power.Larger subwoofer like 6.5',it need approximate 30W of power.If using a larger subwoofer in home theatre system,its radius is larger than 6.5 example like 8.0' and higher or even larger like 10',12' or 15' in a car audio system.Its power handling is approximate like 75W in a home theatre system or even higher like 250-800W in a car audio system.A subwoofer is powered by an amplifer or called receiver.Large subwoofer need a high power amplifer to work.If a large subwoofer work with a low power amplifer,it'll cause some clipping sound during playback.And also if using a high power amplifer but a smaller subwoofer,it'll produce distort sound or even it'll blow up.Here is an example of structure of a subwoofer.

Click it to see it clearer.

Here is an example of high excursion subwoofer.It's surround is bolder than a normal subwoofer.It's use to produce deeper bass in a bigger room or places.It's common use in a car audio system,so its power handling is higher like 800W or 1100W.High excursion means its cone can vibrate within a larger depth,that why it's using higher power.