Quote:
Originally Posted by jdandy
Screws in wood or composite speaker cabinets will not hold a constant torque value as will machined threads into a threaded metal hole or a threaded nut. You have to be extremely careful when tightening screws into wood or composite materials. Snug is usually where you want to be, but not wrenched down to a higher torqued value like you would a threaded bolt. In addition, tightening screws should be done back and forth across the speaker frame from one side to the other rather than one screw to the next around the speaker frame. I this manner an even pressure is applied to the speaker frame as it is pressed to the cabinet mounting hole.
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This applies to any dynamic driver mounted on a baffle.
Most often, mis-tightening that causes buzzing is atttributable to one of 2 causes: 1) uneven tightening of the driver frame or faceplate can cause the voice coil to rub typically at frequency/excursion extremes - on some drivers the amount of difference in torque is tiny and the order in which you apply pressure (see
Dan's post above) can exacerbate the issue, and 2) an air leak caused by uneven tightening.