Speaker Isolation -- Experience with Townshend Seismic Isolation Podiums


Over the past several months the new Townshend Seismic Isolation Podiums have been receiving some interesting and positive press. Living as I do in both an earthquake zone (Pacific NW) and in a busy urban setting with a lot of rumble from construction and passing vehicles I thought these could be worth exploring for my setup. As I was not able to find a US distributor I purchase direct from the UK (via Analogue Seduction, highly recommended). I placed an online order, with follow up to confirm the size and weight of my speakers and about six weeks later they turned up on my doorstep (the platforms are made to order with loading on the cells specific to the weight of your speakers)

The Isolation Podiums are basically four load cells attached to a robust platform onto which you stand your speakers. While not cheap ($2500 for the size I needed) they are very well designed and easy to use. For example I was concerned about being able to move my 275lb Magico Q3s up onto the platforms -- actually it was easy as the platform at 20mm is lower than the speaker spikes so it was simply a matter of unscrewing each spike and shuffling the speaker across. Once onto the platforms fine leveling was easily possible by adjusting each load cell. All in all the podium system is very well designed and works exactly as intended.

But how does it sound? With several days listening experience I cannot recommend this product too highly for anyone who wants to hear the best from their speakers. My room is custom designed with a concrete slab floor so a solid surface but of course subject to external vibration. Prior to the podiums I'd been enjoying deep and dynamic bass but had occasionally felt that the sound became congested in more dynamic and complex material. With the podiums all of this clears up. First impression may be of less bass but as is typically the case this was a result of a reduction in boom and smear and instead more of the open sound of real bass (think of a bass drum as being more "whoof" than "thump" after the initial leading edge - too often the sense of large volumes of air being displaced is lost. In addition I became much more aware of all the rhythmic leading edge detail in bass guitar passages, all the little cues the bassist is putting in. Furthermore it became much easier to resolve bass alongside other instruments. Example in point "Bye Bye Blackbird" by Nancy Harms (https://www.youtube.com/watch?v=yd4tQrndlFw). This opens with deep full bass which is a first test but then quickly becomes quite a crowded and in many systems overloaded mix. With the podium in place all of the instruments became much easier to separate and what had been a congested and even edgy mix became clear.

One final and unexpected change is how you can now more easily hear the recording venue. Listening at the start of recordings the sound of the room itself is a very low level mix of rumbles which (when it's present on the recording) is all too easy to lose -- the podiums help uncover this detail and create a much greater sense of real instruments in space. All in all I'd recommend you give these a try and no need to believe in voodoo to buy in to this tweak.
128x128folkfreak
If you don't need the platform of the Townshend podiums, the Seismic Pods themselves are considerable cheaper.
I should probably update this thread.

I did end up moving to the Marten Coltrane Tenors speakers (from the Marten Bird 2), and am considering maybe loading them up on Townshend Podiums next. Right now, I have my whole Stillpoints ESS equipment rack on weight matched Townshend Dual Pods per corner for a total of 8 pods. Also setup my EAR 890 monoblocks on Townshend Seismic platforms that were custom cut to fit the amps.

Finally, the EAR Discmaster is on the top of the Stillpoints ESS rack and totally disconnected from the floor vibrations now. Got an increase in black background and dynamic range, but more importantly, no speaker vibrations feeding back into the setup.

Also, apart from the Helius Silver Ruby, I have the Kuzma 4 point also loaded up on the Discmaster.  Luckily, I was able to use properly matched springs within the Discmaster pods that balanced out the whole turntable.  I leveled the whole affair and it sings beautifully! Here is a picture:

https://c3.staticflickr.com/6/5593/30252622330_f0d25cb15f_b.jpg
shaizada -- thanks so much for your update, great to hear about your positive experiences with the Townshend products

Also congrats on the DiscMaster! Mine is currently sporting a Durand Kairos/AirTight PC-1 in the first position and a Wand+/Miyajima Zero in slot two.

https://systems.audiogon.com/systems/5707#&gid=1&pid=6

I have a Acoustical Systems Palladian on order to replace the PC-1 and am toying with adding an AS tonearm as well -- the DiscMaster really makes it easy to swap tonearms once you have the spring balancing down (and a good stock of springs on hand), great to hear you were able to get the weighty Kuzma all set

Have you ever tried rotating the arm board so that the two arms are at 2 o’clock and 5 o’clock (i.e. board is positioned on the right rather than behind) -- I understand this was the original design intention?
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