So... How was the sound after installation of the Townshend Seismic Podiums?
Clean. Precise. Unrestricted. Tight. Extended. Natural. The installation of the Townshend Seismic Podiums seemed to "clean" up the sound in reduction of any slight "smear" or "cabinet vibration"... that I was unaware of existing. This phenomenon mentioned was certainly not noticed at all prior to the installation of the Seismic Podiums. I am not sure it could be noticed. However after the installation of the podiums, the sonics were just that much cleaner, precise, natural in attack and decay...
Was I imagining the sonic changes? It certainly seemed readily apparent, especially in midrange vocals and bottom end...
Prior to installation of the Podiums, I was inclined to try to personally confirm the validity and claims made of the Podiums. So, how do I confirm the podiums performed as advertised after installation? Alright, this idea may work... the following is what was done:
With the assistance of my cell phone, I searched the app store to find a vibration meter. Found and installed the following app:
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Next... I needed to select a song which possessed strong and dynamic bass. I am not one to typically seek music like this out. Then it dawned on me, I had Qobuz "new releases" on repeat the week before and noticed the bass thumping while downstairs on the other side of the house. A quick glance at what was playing on Roon and it happened to be Billie Eilish. With that in mind, I listened to the beginning of a few songs on an album and selected the following track, which exhibited substantial bass output as well as pretty near the beginning of the track:
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The cell phone was placed flat on its back on the top of the Nightingale. The Vibrometer app was started, then I used my iPad to start the above song. Here is a snapshot of the Vibrometer on the top of the Nightingale with standard footers/feet on the speakers:
The measurements along the top stating "average" and "Max" are the movement figures. 3.4 Max movement with 0.2 average:
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After installation of the speakers onto the Townshend Seismic Podiums, the process was repeated. My cell phone was placed flat on its back on the top of the Nightingale. The Vibrometer app was started, then the iPad used to start the above song. Here is a snapshot of the Vibrometer on the top of the Nightingale placed upon the Townshend Seismic Podiums:
The measurements along the top stating "average" and "Max" are the movement figures. 0.4 Max movement with 0.1 average:
View attachment 47895
This was just one song, and one rough estimate with a phone app. However, maximum movement from 3.4 to 0.4 would be roughly 88% reduction in vibration transmission if my calculations are correct.
As mentioned the audible improvement was discernible to me. It is also interesting to me that there was such a significant reduction in the vibration which was passed through the footers to the speaker and how it being significantly reduced cleaned up the sonic presentation.
As I type in this note, it dawned on me the measurements were performed with the 5" furniture glides under the Podiums. As the actual footers appear to be more like 3.5" in diameter, the would likely compress the Frieze carpet more. The 5" diameter glides may have been a bit "cushioned" or "floating" a bit on top of the carpet.
Last weekend I used the recommendation of a friend and used an air bladder underneath the Podiums to lift them up and remove the furniture moving discs and then gently lower the stands so it would not affect the placement or toe in of the speakers.
That pretty much sums up the installation process and effect of the Townshend Seismic Podiums.