Townshend Audio Podiums: The Full Review


I’ve been fascinated with the importance of vibration control for more than three decades now. A lot of my experience is already covered in Millercarbon's Mega Vibration Control Journey https://forum.audiogon.com/discussions/millercarbon-s-mega-vibration-control-journey The Journey ended with springs. Then I got Pods, and wrote Vibration Control and the Townshend Audio Seismic Pods https://forum.audiogon.com/discussions/vibration-control-and-the-townshend-audio-seismic-pods Now as we continue our journey forward it is time to review the Townshend Audio Podiums.  

Podiums are based on the same basic engineering used in Pods. A spring is encased in a rubber sleeve that functions as a sort of bellows, trapping the air inside. At the top the spring is attached to a threaded metal plate with a single very precise small hole in it. The threads are for height adjustment and the hole is to allow air to pass through. A very small, precision-controlled amount of air. This tiny little hole allows the air to function as a damper.  

A fundamental challenge with springs is they bounce. We want them to bounce. But we do not want them to keep bouncing! When that happens we say it resonates, and resonance adds color. It is a form of distortion, and we don’t want it. Springs all by themselves are already very good at isolation. Please read the above threads to see just how good they are. But even as good as they are springs do have this problem of resonance.  

The problem with damping is figuring out how to achieve it, and how much to use? The air valve method Max Townshend invented uses only a couple percent damping ratio and does this with air alone and no moving parts. Genius!  

The four damped spring towers are attached to a very dense, massive and inert plinth. My traditional knuckle rap test yielded a very satisfactory ’thunk’. Stiff and highly damped, it is also covered in an extremely durable and beautiful finish. Sliding speakers on and off left zero marks on them, and they really are handsome to look at.  

The damped spring towers at each corner are threaded for two different leveling adjustments. The first is to level the unloaded Podium on the floor. This first step eliminates any problems or situations where the floor is not perfectly level. This adjustment (if necessary) is made with a special thin wrench that comes supplied with the Podiums.

The speakers are then placed on the Podiums and fine tuned for precision placement. At this point, loaded with 150lbs worth of Moabs, making fine positioning adjustments on my thick carpet proved a bit of a challenge. The solution I came up with was BDR Round Things under the footers. Furniture gliders would probably also work. If it is even a problem. My carpet and pad are very thick. They do look like they will work beautifully on hardwood flooring.  

Once perfectly positioned the speakers are raised by turning the knobs at each corner. There is a process to doing this. First all four are turned equally, until all four corners are floating free and clear. It is essential to allow freedom of motion in all planes. Once this is achieved then the speakers can be adjusted perfectly level by turning the knobs in pairs- the two on the left or right, or the two on the front or back. Adjusting in pairs this way avoids diagonal rocking.  

Describing this process in print is hard but doing it in practice is easy. In fact this was the coolest part of setting them up! With the Podiums I was able to place my level right on the Podium. Even fully loaded with about 150lbs of Moabs and BDR the knobs turn silky smooth, and precision leveling is super easy.

Okay, okay, so how do they sound? In a word: wonderful! This can’t come as much of a surprise. They are after all basically Pods attached to a plinth, and the Pods work wonderfully under everything I have tried. Still, the Podiums are pretty impressive.  

The first thing I noticed was improvement in the direction of what I would call a more natural sound. Natural sounds are almost never described as having glare or strain. Natural sounds can be quite loud. But there is a difference in nature between a loud natural sound and the same sound through a system. They may measure the same volume but we have no trouble hearing the difference.

At this point I have to agree with Max and say that the difference is ringing. Natural sounds start and stop very quickly. Sounds reproduced by our systems cause the system itself to vibrate, then the room, and the room feeds back into the system until the whole thing is ringing like a bell. This all happens very fast and can be seen demonstrated on a seismograph placed on a speaker. https://youtu.be/BOPXJDdwtk4?t=6

In any case, whatever the explanation it is clear there is a lot less glare and strain with speakers on the Townshend Podiums. This results for me in a lot less listener fatigue. Another thing I find is that while I don’t necessarily need to turn the volume up, when I do it is way more enjoyable! The combination of speakers like Moabs capable of playing very loud and strain-free with Podiums is intoxicating!

The next thing I’m hearing is a massive improvement in what I would call truth of timbre, or tone, or whatever you want to call it that makes each individual instrument sound more like itself and not any other. Not the big differences that distinguish a steel from a string guitar, but the little details that distinguish one wood-bodied gut-stringed guitar from another. Not hyped-up count the spittle hitting the mic details either but the sort of tonal shadings that distinguish the real vocal talent from the second-tier. Even now after more than a month on Podiums still I put on records that have me going Wow that wood block really is a wood block!  

This is why I spent so much time explaining Max’s damping mechanism. Before Podiums my Moabs were on springs. The load was the same, and the springs were properly sized for the load. However, the springs on my DIY platforms were not damped. Consequently, they had their characteristic resonance. This resonance colors everything played on them. Like viewing the world through rose-colored glasses- you may like what you see but that ain’t the world! Now on Podiums the world as presented by the Moabs is full blown Ultra Panavision 70! https://vashivisuals.com/the-hateful-eight-ultra-panavision-70/

Those who follow me know I am not just about sound quality, I am also about value. Because I am so passionate about sound quality, but have only limited resources, I have to be. No way I have enough money to go chasing the latest and greatest. One look at my system anyone can see how hard I will work if it will get the job done for less. https://systems.audiogon.com/systems/8367 

For sure springs will do a very fine job for very low cost. Just about any spring, properly tuned and used, will outperform an awful lot of stuff that costs a whole lot more. For sure anyone in the market for good vibration control solutions- and that should be everyone! - should consider springs. But Townshend Podiums are so much better than ordinary springs that I have to say that even at their price they are not just as good value, but even better. They are that good.


128x128millercarbon
Credit John Hannant. I gave him the weight and dimensions, he did the rest. These things being where they are you don't get down on the floor much to get a good look at them, but looking at the pictures I am reminded just how good they really do look. The paint is a special coating made in Texas, looks great and incredibly durable, not one mark from walking these 150lb speakers into position. Perfect width, about 1" wider than the Mobs, and about 3" deeper which is perfect to allow them to be placed a little further back for balance.
@pmiller115,

Carlin was certainly an interesting character. Unfortunately we heard very little about him here in the UK (or had anyone remotely equivalent) but there's still plenty of his stuff online.

I've also tons of respect for Max Townshend. He's certainly not one of those trying to cash in on the sudden boom of interest in loudspeaker isolation. There are now even products (usually some type of foam block) specifically made for pro use in studios. 

Max was talking about this issue way back in the 1990s (if not even earlier). He seemed to have started off advocating pneumatic (air bladder) isolation and eventually graduating to using damped springs. It's obvious that he's given this subject plenty of careful consideration.

It's also quite reassuring to know that these current podiums, with their considerable lineage are receiving some very good feedback.
CD318
These podiums and the principles upon which they a re based is apparently another example of something hidden in plain sight.  As I previously commented, it really makes you wonder how many other things that would produce considerable improvement have gone right over our heads only to be "discovered" by us years later. I am convinced that it is a hobby because you are compelled to continue the search for improvement even though it sometimes leaves you scratching your head wondering why you didn't "catch on" sooner.  As I have also previously said, once you become convinced that no further improvement is possible or you are no longer interested in continuing the "search" for improvement, your system will become just a little bit more interesting to you than a chair or a coffee table.
@pmiller115,

Yes, there is definitely more to this hobby than just listening.

As for missing the obvious or even going round in circles, I think the classic case has been the switch from the original rubber feet used on equipment (inc loudspeakers) back in the 60s and 70s to the recommended spikes in the 80s and onwards and then gradually a return back to rubber feet / isolation of today.

Just why this happened is not clear but perhaps the prevailing audio fashion went from the 50s era warmth and richness to a more clean and lean sound in the 80s and onwards and is now returning back once more.

Some, like our friend @mahgister, even recommend a second set of isolation springs to provide additional damping for the speaker top.


"2 set of springs boxes instead of one with small difference in load on them will damp the internal resonance...It is very audible... Audible immediately in the naturalness of timbre....."


Interesting times. I can still remember the original Townshend Rock turntable with its unique headshell damping trough.

Wasn’t that the turntable that gave you rock solid bass?
Then or now, I think most people buy the story as much as the sound. Hardly anyone ever bothers to compare. Not that it's all that easy to do even if you wanted. I started out like many do thinking the whole idea extremely farfetched and therefore not willing to spend a dime on what I know will turn out to be a wasted effort. 

But it is a hobby and I do have a keen interest and so I tried, first phone books and of course that made hardly any difference at all but the fact it made any difference was telling and so one thing led to another and soon I was trying all kinds of things. 

Along the way I learned that not only the material but the size and shape of the material makes a difference. For decades it seemed the last thing you wanted was something soft and squishy like a spring. Because sorbothane and other soft stuff like that did lower the noise floor and did reveal some detail but also sucked the life out of the music. Spikes on the other hand went completely the other way, only instead of sucking they are adding etch and emphasizing a top end that a lot of guys seem to mistake for detail. 

Now looking back it is clear all that was ringing, and all the different spikes and cones were tuning the ringing to what people like. Even today all that is going on with a lot of these things is people using different materials and shapes to tune out some of the more unpleasant peaks in the ringing. That is what Gaia do, they are sort of springy but too damped. Ordinary springs are better, at least in some ways, but have the resonance problem.  

Mahgister uses springs above and below and that is another way of tuning out some of the objectionable resonances that come with springs. If you have one sort of spring below with one mass it will have one set of resonant frequencies. If you then add another set with another mass it will have another and they will average out smoother. Similar to the way a lot of subs in a DBA is smoother and better than just one sub.  

The beauty of it is once you get the hang of it there are a whole lot of applications. Simply removing the hot glue from the board my crossover is mounted on and using some sorbothane for crude isolation improved the crossover. Rubber bands are a sort of spring and so I figured out a way to use them to hold my phono leads that reduces ringing and vibrations being transmitted up the cables into the tone arm. The opportunities are endless.