Neumann KH120 II

[ernestcarl]

It is not a defect in the monitors.

Uh, of course, the monitors are not defective. These studio monitors are small and have ports though... so it's actually not totally out of the ordinary.

*You mentioned some time ago you do not listen to bass heavy music. One's limited experience does not cover every other scenario or use-case. I'm beginning to sound redundant, but it seems you haven't learned that lesson yet.

 

[feitaishi]

Here is a link to video highlighting this problem.

Hey, this noise is not present on 770 pro headphones, neither on Eve sc207.

I am a bit disappointed I have to say.

Could you share your reference track file?

 

[bitels]

I have never heard anyone else having this issue. I have certainly never heard with with any of the nine pairs of Neumann monitors in my studio, including two pairs of KH120 II's. It is not a defect in the monitors.

Thanks for trying to help, could you Play 50hz and 60hz wave through yours KH 120 at 75-80 db and hear does yours "chuff" from ports.

 

[bitels]

Could you share your reference track file?

I will do so when I get back to home.

 

[bitels]

I can recommend APS Klasik 2020 instead. I had both the KH120 and the Genelecs and still preferred APS.

Not available anymore I think. And I live in Poland, where they are produced.

Also ma1 is very good addition for mixing.

I guess kh150 might be the answer, but those are twice more expensive.

 

[quattro98]

Not available anymore I think. And I live in Poland, where they are produced.

Also ma1 is very good addition for mixing.

I guess kh150 might be the answer, but those are twice more expensive.

Another option would be to add a KH750. This will remove the lower frequencies from the monitors providing deeper bass and lower distortion.

 

[Multicore]

I listened to your video. I suspect that the HS8's simply do not produce sound at those frequencies. I think that is in the recording. The Neumann monitors are simply telling the truth of what is in the recording.

If you study the measurements and reviews of the KH120 II's you will find that the reviewers specifically test for chuffing from the ports and find none.

Moreover, it does sound like port chuffing.

It seems like your 120 II's are doing exactly what they are supposed to do and that there is absolutely nothing wrong with them.

Best wishes.

Disagree. I checked in my DAW and with headphones. Both speakers are producing similar level of the bass notes' fundamentals at about 43 and 46 Hz. The Neumann also produces a spray of frequency-domain spikes that I guess are distortions of those bass notes. I don't know why. Is it defective or operating beyond its specs?

@bitels downmix to mono and do you get the exact same sound on both channels?

 

[Matias]

Here is a link to video highlighting this problem.

Can you share the song name so that I can try to replicate at home too?

 

[Multicore]

Not available anymore I think. And I live in Poland, where they are produced.

Also ma1 is very good addition for mixing.

I guess kh150 might be the answer, but those are twice more expensive.

I don't recommend it. If you want to listen to sub bass loud through speakers, as opposed to headphones, then you need a subwoofer.

 

[Multicore]

Can you share the song name so that I can try to replicate at home too?

Yes please.

 

[holdingpants01]

Uh, of course, the monitors are not defective. These studio monitors are small and have ports though... so it's actually not totally out of the ordinary.

*You mentioned some time ago you do not listen to bass heavy music. One's limited experience does not cover every other scenario or use-case. I'm beginning to sound redundant, but it seems you haven't learned that lesson yet.

He also claimed that there's no content below 40Hz in any modern pop music, this claim was so absurd that I had to do sanity check and measured random 5 songs from current billboard top 10 and of course all of them had significant output there. This guy just can't grasp certain facts and no amount of proving him wrong will change that

 

[teashea]

Disagree. I checked in my DAW and with headphones. Both speakers are producing similar level of the bass notes' fundamentals at about 43 and 46 Hz. The Neumann also produces a spray of frequency-domain spikes that I guess are distortions of those bass notes. I don't know why. Is it defective or operating beyond its specs?

@bitels downmix to mono and do you get the exact same sound on both channels?

It is highly unlikely that two monitors would both be defective. Neumann tests each monitor before it leaves the factory. The problem is not the monitors.

 

[teashea]

He also claimed that there's no content below 40Hz in any modern pop music, this claim was so absurd that I had to do sanity check and measured random 5 songs from current billboard top 10 and of course all of them had significant output there. This guy just can't grasp certain facts and no amount of proving him wrong will change that

You completely misquote me. I did not say that. I said that there is very little pop music with content below 40 Hz. That is the objective truth. It is likely that your our measurements are wrong. What are the songs? How did you measurement the content? What equipment? Give us your measurement data.

 

[DEF]

It is highly unlikely that two monitors would both be defective. Neumann tests each monitor before it leaves the factory. The problem is not the monitors.

You are way too confident. Give OP some chance here. Let's wait for the audio sample OP is gonna provide and we can check by ourselves.

 

[Multicore]

It is highly unlikely that two monitors would both be defective. Neumann tests each monitor before it leaves the factory. The problem is not the monitors.

Quality control is measured statistically using terms including defeat rate. Testing lowers defect rate. Ensuring zero defects at point of installation is harder.

 

[kharan]

Also, it makes more sense to have two monitors of the same run to be affected by the same issue, there's a decent chance those two monitors don't have serial numbers too far from each other.

An alternative would be to email Neumann.

 

[dfuller]

You are way too confident. Give OP some chance here. Let's wait for the audio sample OP is gonna provide and we can check by ourselves.

He's a Neumann fanboy. Literally to the point he thinks that they can do no wrong.

 

[MNMLSM]

It is highly unlikely that two monitors would both be defective. Neumann tests each monitor before it leaves the factory. The problem is not the monitors.

Pretty ignorant behavior. Reading your posts, I assume you own the 150 and 120.
A constructive way to deal with the problem would be easy, just get the source tracks of the OP and try it on your own 120's and 150's and see if you can reproduce it.

 

[Multicore]

I would also consider the signal chain, gains and processing. It makes little sense that a correctly behaving KH120ii would be falling apart like this when the Yamaha does not, give the same signal.

We need to take care. Just for example, my WiiM Pro connects to my MiniDSP Flex over digital coax. When I use the EQ in the WiiM app I must take care to not boost any frequency band. When I do, obvious distortion occurs.

 

[ernestcarl]

What are the songs? How did you measurement the content? What equipment? Give us your measurement data.

... random 5 songs from current billboard top 10 and of course all of them had significant output there.

example: https://www.billboard.com/charts/hot-100/

Eh, not really music I regularly listen to... nevertheless, easy enough to look at a spectrum analyzer in real-time or load the file or full recording into a spectrum analyzer plugin/software module.

There's quite enough output below 40Hz according to my native real-time spectrum analyzer via JRiver.