In a well treated room, the sides and rear aren't as important as the doppler effect of the speaker itself actually moving back and forth. Adding weights is the best thing you can do. :)
But it only matters if you can hear it.
Best,
Erik
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Try to put 10-15 pounds iron weight in the lower chamber instead of sand. Also, putting speakers on spiked wooden platform should be beneficial. Not all vibration is bad, you want to 'tune' not deaden. This I am not sure of, but it's possible that puting one half inch Walker Audio resonance control disc on each speaker would do good, one inch disc would probably be too much but hard to know without trying. |
I remember the funny scene from the movie "Private Parts" when Howard asked ladies to sit down on their subwoofer when he was humming very low into his studio microphone LOL. |
You have these right?
"TOTEM BEAK
research and development
The “Beak” was developed to control parasitic vibrations that occur
on top of a speaker cabinet. These resonances actually interfere with
speaker performance, specifically the waveform symmetry emitted by
tweeters.
Implementing a Beak on any speaker can actually control and
provide a better interaction between speaker, tweeter and housing.
Careful thought and research were poured into the development of
the Beak. Its precisely defined contour was carefully designed; if any
of its properties were altered, it would impact the flux created within
and render the unit ineffective.
the shape
The “Beak” is milled in a prescribed form, which controls resonance
and directs emanation. These distortions occur within a strict range.
The Beak can actually channel common distortion and move it through
its cavity to the discharge point on top, hence its shape and name.
As the beak on a bird or whale channels sound, this Beak channels
the negative effects of dynamic speaker housings.
totemacoustic.com 10
mass and detail
The mass of the Beak is crucial to proper holography and image integration. In addition to the proper
size and curve ratio, tests were done to determine the texture on the surface of the Beak. The spacing of
the micro ribs increases from the bottom part to the peak. In fact, the line structure (micro ribs) controls
the velocity at which the Beak dissipates distortion, actually helping the tweeter extend its range. This
surface texture actually helps alter frequency and phase, allowing you to lock in a proper height and cor-
rect three-dimensional image.
placement
The placement of the Totem Acoustic “Beak” on a smaller speaker is usually towards the outer front corner
of a speaker pair. If one looks at the top of the “Arro” (our smallest surface area speaker), the placements
of the Beaks are right up front toward the outside. Other small speakers benefit from approximately the
same arrangements. On larger speakers or on units with top mounted tweeters, a proper location must
be derived. Experimentation is the key to determining the proper location.
specs
The high frequency difference when using the “Beak” is measurable and quite apparent. The tweeter
generally has better linearity in the 8 kHz to 20 kHz range. Therefore, better staging and imaging is evident.
At the crucial crossover point, frequency dips both on and off axis can be alleviated by as much as 1.5 dB.
Outcome: better harmony between woofer and tweeter, resulting in enhanced speed, impact and transients."
Also, mass loading with lead shot instead of sand is another recommended option according to the manual. The higher density might help. Cheers, Spencer
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