Townshend Audio Seismic Podiums Review


Seismic Isolation Podiums: A Game-Changer for Bass Control and Overall Sound Quality

After attending the Capitol Audio Fest, and returning home to evaluate my system against what I’d heard, I was reminded just how much I love the sound I’ve cultivated in my setup over the years. In many ways, it stood up favorably against some of the best systems I heard at the show—some costing many times more. That said, the experience left me inspired to try to push my system further and find how I could make it even better.

One issue I’ve been wanting to address is the bass boom in my room caused by my large speakers coupling with my raised floor. My listening room is on the lower level of a split-level home with an open floor plan and a suspended floor that behaves a bit like a drumhead. While I’ve installed bass traps in the corners and experimented with absorbers and isolators, I was still searching for a way to decouple the speakers from the floor entirely.

That’s when I discovered Townshend’s Seismic Isolation Podiums. I was already familiar with Townshend’s supertweeters, but I had no idea how highly regarded their isolation products were. After combing through countless reviews (seriously, I couldn’t find a bad one which was amazing), I reached out via an Audiogon listing to Townshend’s Worldwide Sales Manager, John Hannant, for guidance. He’s a really responsive guy, and he recommended and sold to me the Size 5, E-weight Podiums for my massive 250+ lb Dynaudio Consequence Ultimate Edition speakers.

The Podiums arrived in Virginia in under a week, all the way from England, and my first impressions  were:

1. They’re frickin big.

2. They’re frickin solid.

3. How on earth am I going to get 250 lbs speakers onto these spring-loaded platforms

Thankfully, the process turned out to be much easier than I feared. Using Teflon furniture sliders, I carefully tilted and slid the speakers onto the Podiums, fine-tuned their positioning, and bubble leveled them according to the directions. Despite how unnerving it feels to see, and feel, my hefty speakers perched on a bouncy interface, the results speak for themselves: the bass response has been transformed.

The muddying boom I’d been battling is gone, replaced by bass that is tighter, quicker, and far more defined. It’s truly amazing how much of a difference these Podiums have made. Beyond the bass improvement, they also reduce vibrations transferring from the floor to my equipment rack, which further improves other aspects of the sound in more subtle ways. Everything is just a little better.

The build quality of the Podiums is exceptional, as you’d expect from a product hand made in England essentially of just heavy specialty coated steel, carefully chosen tempered springs and a custom rubber dampening system.  While they’re not inexpensive (what is, in this hobby/industry), they deliver on every claim I read about, and can be considered a lifetime investment because there is nothing to wear out.

Townshend has truly created a stellar product, backed by fantastic customer service. The Seismic Isolation Podiums have exceeded my expectations, and I can’t recommend them highly enough to anyone looking to elevate their system’s performance, particularly if resonance is a known issue.

Kudos to Townshend for such a well-engineered solution that makes a real difference!

Note: I have no affiliation with Townshend, nor was any monetary or product provided to me to generate or influence my review.

hollandw

@prof - I quit using springs too, but for different reasons.  Hockey pucks are vulcanized rubber and I have read that some like them for loudspeaker support.  If you like those, you might also consider Herbie's Audio Lab Giant Fat Dots or Giant Fat Gliders, which utilize a compound specifically developed for loudspeaker support.  These are what I moved to and in my system they seem to provide suitable vibration isolation without affecting tone.

Mitch,

I was already using Herbie’s fat gliders under my Thiels.

I then tried Isoacoustic Gaias, And they provided some nice tightening

of the bass, although I wasn’t totally sure about this, slight tonal change.

however, it was shortly after that that I moved my Joseph speakers back into the room, And all my experiments continued with stuff underneath the Joseph

Speakers.  I tried everything from MDF constrained damping Shelves

To commercial “Pro gear” Foam based isolation Bases, All sorts of different material footers, Even Combinations of cedar wood railing end caps beneath

the MDF or granite bass.  All had their own effect on the sound. 

 

@prof - Curious, did you perceive a change in the tonal balance when using the Fat Gliders like you did with the Townshend springs?

@mitch2 

That’s always a concern of mine, But since the

Herbies Gliders are generally pretty flat and screwed right up

Into the base of the speakers (Thiel 2.7s) They didn’t seem to change the tonality

Or at least not to a degree, that bothered me. 

I think the Herbie gliders For me were most useful simply and being able to slide the speakers Very easily on my carpet to adjust their position.

If I was looking to the hone sound of the Thiel speakers It’s my hunch that I’d Get

More obvious changes with some other products.

But I’ve really liked the way the speakers sound just sitting on my floor,

And when that sound changes too much, I start to get less satisfied.

I had the Podiums sitting in my office for 2 weeks and finally got the energy to set them up.

I only had time for 1 speaker, but that speaker sounded really good after adding the Podium. I was playing a lot of heavy metal to see how the bass response would be. I was impressed by the sound, there was a bounce to the bass, and it sounded better.

I played When the Leave Breaks loudly and touched the speaker. It had no movement. Then I touched the Podium, and it was vibrating up and down.

I think I have a winner here. I got the second speaker setup now and will listen again tomorrow.