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A. Speaker spikes keep the speaker from rocking back and forth in response to driver motion, especially when the floor is carpeted. A midrange or tweeter moves very little on its own, and when bass is strong, the speaker may move more than either of these drivers due to the motion of the heavy woofer cone(s). This will have a negative affect on the sound. If the speaker is kept as still as possible, the definition and dynamics of the sound improves. On hard floor surfaces, the spikes can help to drain energy stored in the speaker cabinets into the floor, which will improve resolution. Make sure you do not use the spikes with a wood floor as this will cause damage to the wood. A coin under each spike, for example, will help protect the floor.
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