Polymer Audio Research MKS speaker review by Soundstage.com...

Well, I've listened to these speakers six times over the past month, most recently on Saturday and yesterday (Monday). The owner of the company (Daniel) visited Jeff's on Sunday to tweak positioning and add some foam into the port. I visited Jeff's yesterday (at his request). Daniel's efforts definitely helped, but the center imaging is still off. At the end of the day, we all concluded, this must be due to the room. What exactly in the room, we don't know. Possibly the roof. Possibly the short wall on the left side. We just don't know exactly. We have all made yeoman efforts to work with the speakers in Jeff's room. As I've stated before, the tweeter/mid range sound very smooth. Exceptionally smooth. Some of the best top end I've heard. Someone who was listening with me on Saturday commented that he felt the diamond tweeter lacks the last bit of high frequency detail and sparkle. I'm not sure I agree. The Polymer tweeter and upper mids were very appealing to me. There is no harshness and if sibilance bothers you, you won't find any here. There is no brightness, etch or edginess. However, at the end of the day, the speaker just isn't my cup of tea. I can think of a lot of other speakers under it's $60,000 MSRP price I would buy. I'm afraid the Polymers excellent top end and midrange isn't matched by its bottom end. A few knowledgeable speaker designers who heard the Polymers commented that there are just too many drivers too close together in such a small cabinet. I can't comment on that one way or the other. Although center imaging was a problem in Jeff's room with the Polymers, I found that the depth of soundstage of the Polymers to be excellent - especially after the speaker setup was adjusted.

However, for me, a $60,000 speaker should just be bigger (physically) and sound bigger. Bigger as in taller, certainly not heavier as the Polymer MKS-X's weigh in at almost 400 pounds. I know it's silly to equate size with quality and price, but I do. Some of us just have this vision of what a $60,000 speaker should look like and sound like. To me, the Polymers are not it. If someone tells you about a car that costs $120,000....you definitely have a vision for what it must look like and drive like. That being said, some people may actually prefer the smaller size of the Polymers instead of some gargantuan sized speaker. However, the number of small speakers that I've heard play much bigger than their size, I can count on one hand. The Raidho D1's would be one.

That being said, I'm sure its sound will appeal to some. I don't want to be too harsh on a startup in this industry, because, as I like to say, "we are all in this together." So I'll just say I wish them the best of luck.
 
As a matter of fact, I have! We took professional measurements this weekend.

Here is a screenshot:

ImageUploadedByTapatalk1399396221.087654.jpg

According to the folks who were with me, they had three concerns: the bass falling off quite fast after 70hz, the mid-bass spike at around 75hz, but more so, the big drop off afterwards at 110hz.

The test was conducted using pink noise (in the screenshot).

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Since the company owner was apparently unable to satisfactorily resolve the performance issues in this system/room setup, is Jeff then allowed to return the speakers for a refund?
 
One other thought for your friend Jeff, It's not a coincidence that he's previous speaker, the Soundlabs, did not have this off center image issue. Dipoles do not radiate to the sides/upward. Side wall/floor/ceiling reflections or lack there off, are not a big problem. One of the advantages of dipole line source radiation, takes more of the room out of the equation.

I would hope Jeff gets a satisfactory conclusion to all this given the money he's spent.
 
Since the company owner was apparently unable to satisfactorily resolve the performance issues in this system/room setup, is Jeff then allowed to return the speakers for a refund?

Jeff is happy with the speakers. He is deaf in one ear and therefore the "off center" imaging isn't an issue for him and for him, he understands the speakers aren't perfect (none are), but he loves the "you are there presence, the resolution/transparency without brightness." (Jeff's words). In addition, his situation is complicated as he advised a very good friend to buy a pair to buy a pair of the Polymer MKS-X's even before Jeff had received his. I think this complicates matters to say the least. This friend is coming from the SoundLabs 845 PX's (reviewed recently: Sound Lab Majestic 845PX Electrostatic Speaker The heart of a music system that should last you forever. Review By Dr. Jules L. Coleman)
 
One other thought for your friend Jeff, It's not a coincidence that he's previous speaker, the Soundlabs, did not have this off center image issue. Dipoles do not radiate to the sides/upward. Side wall/floor/ceiling reflections or lack there off, are not a big problem. One of the advantages of dipole line source radiation, takes more of the room out of the equation.

I would hope Jeff gets a satisfactory conclusion to all this given the money he's spent.

Jeff's previous speakers were not SoundLabs. They reminded me of Wilson Watt Puppy's (but they were another brand, which I don't believe are in business anymore).
 
my bad, was unaware there were two polymer systems out there, thought it was the same guy. In any event, big Soundlabs is a tough act to follow,.....:D
 
my bad, was unaware there were two polymer systems out there, thought it was the same guy. In any event, big Soundlabs is a tough act to follow,.....:D

You're right. I heard the big SoundLabs at CES this year and didn't ever want to leave the room. The criticism of the big soundlabs has always been that they don't play loud. Well, at CES, they were playing PLENTY loud for me!

As for Jeff, I know he was very interested in the Vapor Audio speakers when we went to RMAF. Given that his entire system is VAC (phi200's, Sig MK2a preamp, etc.), I thought FOCAL might be a great fit. I thoroughly enjoyed the VAC/FOCAL synergy at CES. But ultimately, if he's happy, I'm happy. I don't have to live with them. He does.
 
Jeff is happy with the speakers. He is deaf in one ear and therefore the "off center" imaging isn't an issue for him and for him, he understands the speakers aren't perfect (none are), but he loves the "you are there presence, the resolution/transparency without brightness." (Jeff's words). In addition, his situation is complicated as he advised a very good friend to buy a pair to buy a pair of the Polymer MKS-X's even before Jeff had received his. I think this complicates matters to say the least. This friend is coming from the SoundLabs 845 PX's (reviewed recently: Sound Lab Majestic 845PX Electrostatic Speaker The heart of a music system that should last you forever. Review By Dr. Jules L. Coleman)

Is it my imagination or an issue with the measurements, but does that speaker really roll off in the upper octaves too?
 
This is actually very typical in-room response. Treble roll off, peak at 70Hz, null at 40Hz (both room modes) ... you can take a speaker measuring perfectly flat (anechoic) and it will have an in-room response like this.

If there is anything unussual, is the lack of energy below 30Hz.

Compare this to Wilson Sophia Series 3, spatially averaged, 1/3-octave response in AD's listening room (red); spatially averaged response of AudioNote AN-E/SPe HE in Art Dudley's room (blue):

211Wilfig09.png


(from stereophile)

Center image shift is also quite typical for asymetric rooms.
 
Hi Mike,

The measurement is showing a very poor result; rolled off bass and treble.

How far was the microphone from the speakers?

The microphone was put in the listening position and then back 3 feet, close to the speakers, off axis, etc. There was a really bad spot at the back of the room. Everything else stayed fairly similar to what you see.


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Is it my imagination or an issue with the measurements, but does that speaker really roll off in the upper octaves too?

It appears so and that's perhaps one reason why comments from others about the last bit of upper end detail and sparkle was missing.

Honestly, rolled off or not, the smooth top end was the one thing about the Polymers I actually enjoyed. I know that two others who were with me commented about the lack of high end detail, resolution and sparkle. They mentioned how ribbon tweeters typically give you this, without brightness or irritation. Having the Raidho's, I don't disagree!


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Diamond tweeters tend to sound very smooth and un-aggresive. If one is accustomed to say Focal tweeter in the Wilsons, no wonder he may preceive them on the dark side. With the current measuring techniques, I seriously doubt those speakers are rolled of on axiss. But to get a full picture you would need to measure not only the on axis response, but also the off axis response.

In room response may only be helpful if you compare it to known reference (another speaker measured in the same room). Which is exactly what Stereophile is doing.

If the speaker really is on the dark side, you can always make some system changes.
 
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