Polk Audio (part of Sound United) has a Klippel NFS

[sweetchaos]

Just watched the latest video of the Polk Audio Reserve overview from Sound United and saw that they're using Klippel NFS!!

You get an NFS, you get an NFS, everybody gets an NFS!

You can see it at 6min:30sec

It's interesting to see how they've added acoustic foams to the robotic arms.
CC'ing @amirm and @hardisj

I guess it goes to show why Polk R100 measured well, when Erin posted the review yesterday.

Discuss!

 

[Laserjock]

Just watched the latest video of the Polk Audio Reserve overview from Sound United and saw that they're using Klippel NFS!!

You can see it at 6min:30sec
View attachment 171566

It's interesting to see how they've added acoustic foams to the robotic arms.
CC'ing @amirm and @hardisj

I guess it goes to show why Polk R100 measured well, when Erin posted the review yesterday.

Discuss!

How’s the R200 look?

 

[sweetchaos]

Same as R100, but larger in woofer size (5.25" vs 6.5").

R100:

R200:

 

[amirm]

It's interesting to see how they've added acoustic foams to the robotic arms.

When I was optimizing my setup, I did add absorbers to different spots. Putting absorbers in the two rails they have, made no difference in that testing. The only major factor was the microphone holder because that is the closest thing to the speaker and hence creates stronger reflections. So I simplified the fixture and added absorption as well.

That said, I do wonder if the reflections are sensitive to speaker type so I may try experimenting more in the future. And at any rate, it doesn't hurt to put them in there.

 

[amirm]

I wonder how much of a difference that foam actually makes. I haven't added any absorption to my turntable setup because I perhaps ignorantly assumed a 3/4" dowel for holding the microphone wouldn't have much impact.

Because the rails are narrow, reflections that matter will be of high frequency. As such, you don't need much thickness to absorb them (wavelengths are small). But yes, in general those foams are not very good absorbers. I tried different material when I built my absorber and actually wound up with a composite setup around the mic for best results.

 

[Laserjock]

Same as R100, but larger in woofer size (5.25" vs 6.5").

R100:

R200:

Lol, I meant the test results

 

[sweetchaos]

Here's the best measurements (quasi-anechoic) we have for R200 (measured by Napilopez):

Now, R100 (that Erin measured):

Both look similar. Both designed well.

 

[RobL]

Good on Polk. I had a pair of their lsim705’s that I enjoyed a lot.

 

[sweetchaos]

Good on Polk. I had a pair of their lsim705’s that I enjoyed a lot.

That was the first generation of their ring radiator tweeter, so this Polk Reserve series is the 3rd generation of the tweeter, with the new pinnacle waveguide.

 

[amirm]

Just watched the latest video of the Polk Audio Reserve overview from Sound United and saw that they're using Klippel NFS!!

Notice that they said they got one "recently." It is possible we were ahead of them and created the motivation.

 

[sweetchaos]

That was my first thought as well.

When someone says "recently", it means within the last year or so...at least in my mind.

 

[RobL]

That was the first generation of their ring radiator tweeter, so this Polk Reserve series is the 3rd generation of the tweeter, with the new pinnacle waveguide.

Yeah, tweeter was maybe the weak link in that generation. I’d like to hear the newer stuff.

 

[mhardy6647]

When someone says "recently", it means within the last year or so...at least in my mind.

oh, not when one gets to be my age...

I often advise folks that, when I say the other day, that they should take it to mean sometime in the past decade.

 

[Transmaniacon]

This is awesome to see, I wonder how some of their newer budget speakers perform if they have better measurement tools available.

 

[Katji]

KLIPPEL System Users | Companies​

 

[Doctors11]

That list looks odd. For example, why would Logitech use a Klippel?

 

[amirm]

That list looks odd. For example, why would Logitech use a Klippel?

They make computer speakers.

 

[Doctors11]

Right

They make computer speakers.

Right but they're low quality plastic things...why would they even consider investing in something like this?

 

[amirm]

The list is for all klippel products, not just NFS.

 

[Doctors11]

Ahhh thanks...I was unaware. So what type of equipment would they use from them?