drone cone การใช้

With a PR system, the movement of the " drone cone " passive radiators reduces the amount that the woofer has to move.
Another benefit is that, given that PR designers usually use a larger " drone cone " than the real woofer ( or use two drone cones ), this means speaker designers can use a woofer that is not as large.
Another benefit is that, given that PR designers usually use a larger " drone cone " than the real woofer ( or use two drone cones ), this means speaker designers can use a woofer that is not as large.
Technical Editor Hugh Robjohns states that PR systems seem to be sealed up, like a sealed speaker enclosure, but in fact, he argues that because the drone cone ( s ) move in and out, a PR system is not really sealed.