Loudspeaker spikes
Sharp cones, usually made out of a copper alloy. Used to place beneath loudspeakers to prevent low frequency tones (bass) from being planted in floor, roof and ceiling. Are in some cases threaded and can be screwed into the loudspeaker cabinet, some can be clubbed into a pre-drilled hole in the cabinet, but they are most commonly fastened with glue or dual sided tape. To prevent damaging floor with the sharp tip, the spikes are often delivered with "feet", a circular plate about as thick as a quarter. The spikes are usually delivered in sets, and to achieve desired stability four spikes per loudspeaker is recommended.
Speakerspikes with feet.
--Skikkelig 00:14, 4 March 2006 (UTC)