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Townshend Springs under Speakers

I was very interested, especially with all the talk.   I brought the subject up on the Vandersteen forum site, and Richard Vandersteen himself weighed in.   As with everything, nothing is perfect in all circumstances.  If the floor is wobbly, springs can work, if the speaker is on solid ground, 3 spikes is preferred.
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theaudiotweak
2,801 posts
 
And now this..from the Wayback machine..same as it ever was

11-02-2016 4:57pm
When energy is applied to soft spongy materials that are used in combinations with springs supporting a loudspeaker, everything supported remains in a state of continuous motion. By doing so, this negates the operational efficiency of a voice coil as the coil itself becomes subjected to this secondary flexing. Ultimately, the voice coil drives the entire speaker assembly and has to overcome the added inertia presented by the motion of the springs and soft materials upon which the cabinet rests. The constant motion and flexing with this type of isolation device manifests inefficiencies within the operational design of the voice coil. Tom. Star Sound Technologies


theaudiotweak
2,801 posts
 
said this many times before.

If you have a time aligned speaker and the cabinet is allowed to move then the cabinet motion will be at 1 or more frequencies greater than the motion of the tweeter. As that happens the speaker will never be in true and proper alignment...

In the 80s Polk Audio had a Time Aligned speaker and demonstrated with a Laser Interferometer that when this speaker was unsecured the tweeter was never in alignment with the woofer. I cannot find the printed ad..

Tom


twoleftears's avatar
twoleftears
5,318 posts
 
https://www.designisthis.com/blog/images/uploads/2012/02/Origin-live-astute-hanging-loudspeakers.jpg

tomic601's avatar
tomic601
12,911 posts
 
tweak……and so few are time aligned and phase correct…so springs “ work “ for them. The narrow focus of tge tgread should have applied… alas..

Mike - i would also trade the high end gear and sonics to relive my young adulthood… 
theaudiotweak
2,801 posts
 
tomic601..

Springs and floppy things allow the cabinet to retain information and resonance far to long. The cabinet is a passive radiator that transmits sound into the air along with the intended signal. The cabinet motion also becomes a part of the voice coil motion. The voice coil drives the cone but also has to overcome the force of the cabinet in motion even more so when suspended on springs or floppy thing mounted.  More to follow.  Tom
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