[GregS[_3_]]

In article , "Richard Crowley" wrote:
"Scott Dorsey" wrote ...
William Sommerwerck wrote:
I've never seen any systematic studies of the audible or measurable
benefits
of speaker spikes.

But they're not inherently stupid or useless. Unless the drivers are
thoroughly decoupled from the cabinet, they make the cabinet move. It
couldn't hurt to couple the cabinet to the floor, to provide a partial
"sink" for these vibrations.

If you decouple the drivers, the air still vibrates inside causing motions on all
surfaces. It would seem spikes would have the most effect
on vertical vibrations. Each cabinet will have different vibrations. The best
have little vibration. A cement floor would seem best. A flimsy woofen floor
is going to move or vibrate the most. To put a spike of a speaker
on a cenent floor, you want a spike that can give a little. Regardless
of spikes, the sound in the room is going to vibrate the floor
anyway.

I'm sure there have been recorded tests, and I know for sure tests
are done on cabinets alone to see what frequencies are resonating
in the cabinet. Spikes may transfer these resonances but will
have little effect on reducing them, unless they are canceled with
another vibration source 180 degrees out of phase.

greg

Yes, but it would seem that there are many better ways to do it than to
use spikes.

Maybe their room has shag carpeting from the 1970s :-)

The depth of the shag (where it wasn't matted down) may
have made it acoustically effective maybe even down into
the upper-mid-range! :-))