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

for your speaker that's 86.6 lb the Green dot cells are not strong enough don't forget you also have to take into account the weight of the podium itself I have the monitor audio platinum 200 Gen 2 which are only 79 lb and at first they sent me the Green dot cells and two of them were bottoming out so John at Townsend sent me the blue dot cells because he said the Green dot ones were not strong enough and now everything is fine so you should be using the blue dot cells not the Green dot cells for your speaker cuz it's even heavier than mine and the platform itself is another 18 lb and the Green dot cells are only good up to 93 lb so you're over the limit already with those.

remember guys when you are ordering the podiums you have to take into the account not only the weight of your speaker but the weight of the podium itself so if you get cells that are too light you're going to bottom out the cells, example, if your speaker is 79 lb and you're using the number 2 size podium that's another 18 lbs so together that would be 97 lb so the C cell can only handle 93 lb total so you'd have to go to the d cell

Isoacoustics Gaia are also an excellent product that works really really well.  If I didn’t already have Townshend Audio platforms, I would have seriously considered Isoacoustics.

It is really great to find products that truly work as advertised and even better than expectations.
I have been using the seismic podiums for about a month now.  They are the real deal.  Everything in the sound improved, bigger sound stage and depth, better definition of instrument placement and bass quality improved.  I was going to spike them to the platform but it was going to difficult due to my spike configuration.  What I actually did was place mini adhesive floor gliders on the four corners of speaker outrigger and lifted them to the platform and could easily move them for minute adjustments. 
Good reads. Worth isolating? : )

"Koelemeijer’s seismograph would spike some mornings, when a neighbor’s washing machine would hit the spin cycle. Even in the depths of the quietest period of human history, “human environments aren’t really ever completely silent" [Copied from the MIT Technology Review, linked below]

Highlighting the above as many point to electric grid use during peak / daytime hours negatively impacting system performance.

Human activity, of the seismic kind, decreases at night...which (likely) also contributes to improved system performance (late night to early morning). Another factor to consider.

https://www.technologyreview.com/2020/07/23/1005574/lockdown-was-the-longest-period-of-quiet-in-human-history/

https://www.washingtonpost.com/science/2020/07/23/human-seismic-noise-coronavirus/
Been living with my podiums for a week now and am very happy.  My room is untreated and the podiums made a noticeable difference in reducing congestion. I have definitely noticed things sounding cleaner, or what I would call less muddy.

I had looked at the IsoAcoustuc Gaia’s too, but definitely appreciate how easy it was to setup the podiums (vs. the considerably more complicated Gaia setup).

Worth the investment?  I’d say yes.
I bought a pair for my Treo's, but didn't realize the outriggers would make them unsuitable for the place I have them, so I ended up using them under my preamp. 
I have to say it made a subtle improvement-considering I was using an Ikea Besta shelf system.
I noticed right away that the sound had more clarity/definition when the platform was introduced.
I also bought some bars for my subs, but haven't gotten them installed as I want to upgrade soon, and moving 100 lb subs around isn't something I want to do more than once.
Bob
@folkfreak  Thanks. 

I also heard back from Sue (Townshend), confirming your and @shaizada 's advice. 

"You can use the Podiums with spikes, without spikes or with pucks."
@david_ten you can use the spikes to raise the speaker as needed -- the platform is sturdy albeit it scratches quite easily 
I have speaker bars for years now under 2 different speakers (Analysis Audio an now Harbeth M40.2).
Recently I tried the Pods under my tubes mono blocks and the effect is, at least, as significative.
My 2 cents
@shaizada   You've been very helpful. Thank you. I'll report back with results.
You are welcome.  Yes, the platforms are solid steel I think.  They will easily handle your speaker load.  The corner pods are rated for different weights. When you order, make sure your speaker weight falls within the range of pod that is ordered.  

Mine are are green dots. 

Your dealer will help you with that.
@shaizada   Thank you!

Platforms, then! : )

Are the platforms thick/solid enough to take the spikes directly? Or should I protect with spike protector discs?
Hi @david_ten 

You should buy the platform instead of the speaker bars.  My speakers are also bottom ported with a tilt backwards.  

Your speaker has spikes and rubber stops. The Townshend platform will help to retain that exact same spec.  You can spike directly into the platform.  

Just make sure you get an appropriately sized platform for your speaker.

The platform is really effective! Beautiful, cohesive sound.
@folkfreak  and other members who are using the Seismic Isolation Podiums / Platforms:

My speakers (Cube Audio Nenuphar) are bottom ported and are designed with a tilt (higher in the front). They come stock with spikes in front and small rubber bumpers in the rear. There is a gap from the floor of approximately 1.5 inches in the front and 0.5 inches in the rear.

Has anyone used Townshend's solution with the spikes on the speaker? Can one 'spike' directly to the platform or is it best to use a protective puck?

I've emailed Townshend regarding the same. 

Thanks!
Great to hear that the Podiums continue to be a worthwhile addition to your system's performance.
@folkfreak   Thanks for your response. It would be nice getting a read on how close the Seismic Bars perform to the Podiums. Do you have any suggestions on who I may be able to reach out to from Townshend (/US Distributor) or a dealer? 
I still am enjoying what the podiums are delivering for me. Over the past year i have made a number of changes to my system that substantially improve how bass is presented and the podiums have really let this come through. Specifically a) adding a super tweeter and subsequently fine tuning speaker set up (including dealing with some close to ear reflections) has cleaned up the leading edge on bass notes making them much more clear and crisp, and b) changing the power cords on my mono blocks added more subtle definition and an extra perceived 1/2 octave -- the bass sounds less loud and bloated but is much more tactile -- again without the podiums a lot of this extra energy and detail would simply dissipate into the floor instead of being projected into the room. 

I'm sure other speaker isolation solutions will work as well so do try something if not the Townshend products
Seismic Bars versus Seismic Isolation Podium???

Has anyone compared the Bars vs the Podium for their speakers?

The Bars are priced lower than the Podiums.

I'm also considering the Isoacoustic Gaia I for speaker isolation. Have any that have used the Townshend products compared them with the Gaia?

Any general updates on the Podiums by members who have posted here, since it's been over a year and a half from the OP and six months since the last few posts?

Thanks. 

cal, each individual Pod is bolted or screwed onto a flat disc, for stability of the Pod itself. The Pods that come with the Isolation "Bar" are bolted onto that Bar, via holes in the top of the Pod. I'm assuming the Pod with bolt holes may be ordered from Townshend Audio. Hope I'm correct! 

folkfreak makes a good point, that the Podiums---with their wider-than-the-speaker footprint, will provide more stability than individual Pods merely placed under a speaker. My point was that, if one already has outriggers on their speakers---which also have a wider footprint, the Seismic Platform is not needed, only the Pods, which may be bolted onto one’s already-owned outriggers.

@bdp24 Do the pods already have a screw hole for doing this?  I've had a hard time finding a picture of the top of the pods...  my outriggers don't have a top bolt, the spike just screws into the housing that attaches to the base of the cabinet (Coincident speakers).

thanks,
Chris
I've not compared the individual pods to the podiums but despite the lower price there are a couple of things I'd bear in mind

Firstly getting a set of pods under your speakers may not be easy especially as they will be pretty unstable until you have all 4 in place. Not a one man job for sure

Secondly depending on the footprint of your speaker it may be less stable on the pods than the podiums. Tall narrow speakers on pods might be worrisome. The podiums act as a wider base
Guys, anyone care to comment on how much better the Townsend Podiums might be, as against three or four pods?  It may be no one has had the chance to do a direct comparison. I use Track Audio Feet at the moment, which are also very good.

 I'd like the Podiums, but they are'nt cheap, a consideration for most of us.
For anyone owning speakers that already have outriggers attached to their bottoms, you can get individual Seismic Pods and bolt them onto the outrigger arms, at a considerable savings to the Podiums.
By way of update, I am extremely happy with the Townshend podiums I recently got myself from Nick at Emporium HiFi here on Audiogon.  I got the Townshend Speaker Podiums Size 3 for my Nola Metro Grand 2 speakers.  I replaced the 8 Ultra AL Stillpoints plus Ultra SS bases with the Podiums a couple of weeks ago.  I set them up right away when I got them, although not very well, but even so I was blown away by the improvement I got relative to my previous Stillpoints set up which was itself very good. Then with @mains' (and Nick's) help I corrected the errors in my setup.  Basically my error was that some corners of the podiums needed to be freed up and moved around as the speakers were not bouncing freely although they were moving.  Now everything is fine and its all just great.  The strongest recommendation from me for the Podiums.  And thanks for the help @mains.
If you get pods instead of platforms, you can put a pod under each front corner, and one in the middle of the rear.
@shaizada re your concerns on weight distribution I think the option recommended by Townshend is to locate the speaker slightly back in the platform that way the tendency to tilt forward is countered as Geoff suggested.

Please do however consult with the dealer who is supplying you as they are the ultimate arbiter. The podiums are usually custom built for your particular situation so they will know what is best to do

Hello folks!

I’m going to experiment with the Seismic speaker podiums as well. I was wondering if anyone has thought about the speaker weight distribution?

My speaker cabinets (Marten Coltrane Tenors) are full carbon fiber (so they are very light overall), but the front baffle is wood and all the drivers are mounted there. This makes the speaker front heavy. The speakers are 86.6 lbs each. Do you guys think it might be fine to go with 2 green dot springs in the back (min weight 17 lb, max weight, 35 lb per spring) and 2 blue dot springs (min. weight 35lb, max weight, 75 lb). Or shall I stay with all green dot springs?

>>>>Ordinarily, all springs would have to be the *same spring rate* - otherwise the speakers would flop over. I have not seen Podiums but the way to deal with uneven weight distribution for anything on *independent* springs is manually move one or two springs slightly in the direction of max mass until the object on the springs is level. Same for leveling turntable or CD player. If the podiums are all one piece you can try moving the speakers along the podiums back to front until they’re level. If the poses are moveable then just move the poss in the back toward the front. I daresay most speakers have most of their mass in the front, so undoubtedly they thought of this issue.


Hello folks!

I'm going to experiment with the Seismic speaker podiums as well.  I was wondering if anyone has thought about the speaker weight distribution?

My speaker cabinets (Marten Coltrane Tenors) are full carbon fiber (so they are very light overall), but the front baffle is wood and all the drivers are mounted there.  This makes the speaker front heavy.  The speakers are 86.6 lbs each.  Do you guys think it might be fine to go with 2 green dot springs in the back (min weight 17 lb, max weight, 35 lb per spring) and 2 blue dot springs (min. weight 35lb, max weight, 75 lb).  Or shall I stay with all green dot springs?
Hi Nick At Emporium is a great guy to deal with he stocks all the Townshend Audio products at great prices Podiums, Pods, Super Tweeters that is were i get my Townshend Audio products in the UK 
You will love the podiums, so easy to set up, measure where your speakers are then move the speakers out the way, place the podiums in there place, you can level by twisting the bottom discs if your floor is not flat, then simply place your speakers onto the podiums,

At the corner of each Podium  use the top knobs on the load cells to raise and level your speakers you just simply twist one way for up and one way for down its clearly marked and so easy to twist, its very important to check the platform is completely off the floor by about 1-2 cm is ok, once speaker is leveled and the platform is not touching any part of the floor give the speaker a little push so you can witness the speaker slightly rock then it will go back to original position, congratulations your speakers are now acoustically isolated from there environment,

Be prepared to witness your speakers vanish and what will appear is a big holographic musically satisfying 3D picture i will say no more and wait for your own description if you need any help or advice please feel free to contact me i will be glad to help, if you cannot afford Podiums go for the speaker bars to experience Seismic Speaker Isolation all you need is the weight of each speaker and the footprint regards john
hi,
check out Audiogon for sale lists for discounted Townshend Audio podiums and other Townshend Audio products 
Thanks @folkfreak and @rcprince for the help with your experience with the Townshend.  I got a pair of podiums from nick at emporium here through Audiogon.  Will post here about my experience after I receive and install them.  I expect the results will be good.
Thanks for the answers, the podiums are apparently a little different than the cradles.  Never used Stillpoints, though I had tried other various isolation/coupling devices under my prior speakers before settling on the Speaker Cradles, which made the biggest positive difference by far.  I now have the Nola Micro References on their stands with their pointed feet on the cradles, and found that I had to raise my listening position a little to get the best integration with the tweeters (it's best to have your ears level with those ribbons, I've found). The older platforms seem to work pretty well with those pointed feet, they may act as a drain for any energy coming from the stand.  Haven't tried it without the feet, just too old and lazy to take everything apart.
@rcprince re tweeter height you make a fair point but as the Townshend podiums are designed to be used without any other sort of spike or footer (i.e. You have the bottom of the speaker flat on the podium base) the added height is offset by the elimination of the existing spikes etc
Thanks @rcprince for the warning.  However, I believe that the Townshend podiums will actually lower the speakers elevation by as much as a couple of inches.  This, as you guessed, is because of the 2+ inch combined height of the SPs, bases and Herbie's gliders.  I believe the podiums raise the height by only 20 mm.  

I imagine you are very happy with the Townshends?  Did you ever try Stillpoints under the NOLAs.
I'm not sure if the new Townshends are like my Townshend speaker cradles, but if they are keep in mind that they will raise the tweeter level of your Nolas (as they do mine).  Now this may not matter if the Stillpoints, etc. that the Nolas are on raise them to the same height as you would have with the Townshends, but it is something to consider.
Thanks for the warning folkfreak.  I won't get the Herzans for my speakers then!  But I am thinking very seriously about a pair of Townshend Size 3 for my NOLAs.  The Townshends would replace my Stillpoints Ultra Aluminums with Stillpoints Ultra Bases with Herbie's gliders underneath the SP bases.  I have the sense that the Townshends will make for a better solution all around including of course primarily the sound.  
@agriculturist I still use the Townsend podiums under my speakers. I would imagine placing a speaker on a Herzan platform would actually cause some major problems as the output of the speaker transmitted into the platform would then be attempted to be cancelled causing all sorts of issues. In other words Herzan cancels vibration from outside the instrument, not from the instrument itself.  Try at your own peril! 

Folkfreak

May I ask do you still use the Townshend Seismic Podiums or did you switch to Herzans for your speakers?  I could not afford the Herzan TS-150 but I am thinking of getting myself a pair of these for my NOLA Metro Grand 2s.

Thanks

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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?
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
If you don't need the platform of the Townshend podiums, the Seismic Pods themselves are considerable cheaper.
I think you will like the results with the podiums, not sure what size suits your speakers as I am not familiar with them but as long as you ensure that the speakers will sit easily on the base and the weight rating is good (100kg is no issue) then you should be fine. Townshend recommends you remove the stillpoints and any manufacturer spikes and have the speakers sit directly on the platform. Presentation will be different to what you are familiar with along the lines I described in my original post