• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Mesanovic CDM65 Studio Monitor Review

Rate this studio monitor:

  • 1. Poor (headless panther)

    Votes: 0 0.0%
  • 2. Not terrible (postman panther)

    Votes: 7 3.1%
  • 3. Fine (happy panther)

    Votes: 41 18.2%
  • 4. Great (golfing panther)

    Votes: 177 78.7%

  • Total voters
    225
It's disappointing to see such ignorance in audio science forums. People just check how pretty measurements are without understanding what they mean, and how they relate to real life situations.

How measured data applies to real life situations is an important aspect of audio science. Two speakers with identical predicted in room responses can measure differently when placed in the same room and position. This is because their dispersion patterns interact with the room differently. Cardioid speakers, for example, tend to have fewer dips and peaks compared to monopole speakers because they interact less with the surrounding room. This results in less Speaker-Boundary Interference Response (SBIR) in the actual measured in room response.

Cardioid speakers generally offer better midrange clarity and bass texture compared to conventional speakers, especially in typical room environments. This is because their design minimizes room interaction by directing sound more towards the listener and less towards the walls, reducing reflections and standing waves. However, in exceptionally large rooms, these advantages might be less noticeable due to the different acoustic dynamics at play.

In other words, these speakers are significantly superior to the KH 150s because of their cardioid response. In a small room, Mesanovic speakers may show similar peaks and dips, but these can be attenuated by up to -10 to -12 dB compared to the KH 150s. Under the same conditions, certain small peaks and dips that appear in the KH 150s' in-room response won't even show up with the Mesanovic speakers, resulting in a completely smooth and linear response. Another problem with KH 150s is that they do not have a great sound power response for farfield listening. (sound power is the highest determining factor for farfield listening sound quality) While the KH 150s can sound great in nearfield settings, their sound power is too non-linear for farfield use. Similarly, while Mesanovic speakers may not have the best sound power for farfield listening, they perform better in that aspect compared to the KH 150s.
 
Last edited:
Almost $1000 more expensive than the KH150 while having fewer controls and worse distortion? Looks like a scam :(
Crossover point 150 Hz for mid drivers SB15NBAC30 is exactly where it increases in distortion. Perhaps CDM65 had a little lower distortion in the midrange area with a crossover point set a little higher, around 200-250 Hz?

BUT in that case it would also have affected the construction in other ways. Exactly how and whether it would have been problematic, challenging or not, I don't know. Seen from an overall perspective, if a higher crossover point had meant at the expense of something else and created a worse result, that is.
For example, what would have happened to the cardioid dispersion pattern in that case?

sb15nbac30-4_0.3m_2v_hpf2-50_hd.png
 
Last edited:
Very interesting !

A question:
How does the cardioid directivity translates in those directivity plots ?

Here is the Genelec 8351B

View attachment 414526

Here is this one

View attachment 414525

Compared to Dutch & Dutch 8C (Erin)

View attachment 414531


This doesn't tell us what happens behind the speaker, of course.

Note that the Theta scale runs between 180 (behind the speaker) and... -180 (also behind the speaker).
Unless I totally missed your point, I would say this graph does indeed tell you what is happening "behind" the speaker! :D
 
I built a DIY speaker based off this format, but it more closely resembled the kii seven. It was intended to be a prototype to see if I wanted to pursue the design further. I even planned on replacing the side woofers with the Dayton DCS165's used in the Mesanovic, though the ones I did use were not much different in terms of output and xmax.

I ultimately scrapped the project because the bass distortion was too bothersome. The bass was there, but it had a rather poor quality to it. I do believe some would find the distortion in the CDM65 to be lacking. Also worth mentioning that I found the sensation of woofers moving a lot but not making much noise to be kind of weird. The cabinet volume for the side woofers is just too small to make for usable bass. I didn't find the cardoid pattern control for the woofers lower region in my speaker to be of much benefit and not worth the trade off of poor bass distortion. I think the Mesanovic should be marketed similar to the Sigburg Manta with the suggestion that they need a subwoover.

I'd also agree that the KH150 is a better offering. The waveguide and tweeter seem to mate better and the bass distortion is really impressive and 30db down from the Mesanovic at 96db output and with only a single 6.5" driver. That's not at all an insignifcant amount and the speakers will definitely be presenting the low end much differently. I think the differences here showcase just how much of a difference big company engineering and budget makes compared to a smaller outfit that is stuck using off the shelf drivers. The Kali LP6 even seems to pull off better low end distortion numbers (worse everywhere else of coure).
I’m suprised you didn’t mention the Kali in8 v2 instead. Being a 3 way.
 
It's disappointing to see such ignorance in audio science forums. People just check how pretty measurements are without understanding what they mean, and how they relate to real life situations.

How measured data applies to real life situations is an important aspect of audio science. Two speakers with identical predicted in room responses can measure differently when placed in the same room and position. This is because their dispersion patterns interact with the room differently. Cardioid speakers, for example, tend to have fewer dips and peaks compared to monopole speakers because they interact less with the surrounding room. This results in less Speaker-Boundary Interference Response (SBIR) in the actual measured in room response.

Cardioid speakers generally offer better midrange clarity and bass texture compared to conventional speakers, especially in typical room environments. This is because their design minimizes room interaction by directing sound more towards the listener and less towards the walls, reducing reflections and standing waves. However, in exceptionally large rooms, these advantages might be less noticeable due to the different acoustic dynamics at play.

In other words, these speakers are significantly superior to the KH 150s because of their cardioid response. In a small room, Mesanovic speakers may show similar peaks and dips, but these can be attenuated by up to -10 to -12 dB compared to the KH 150s. Under the same conditions, certain small peaks and dips that appear in the KH 150s' in-room response won't even show up with the Mesanovic speakers, resulting in a completely smooth and linear response. Another problem with KH 150s is that they do not have a great sound power response for farfield listening. (sound power is the highest determining factor for farfield listening sound quality) While the KH 150s can sound great in nearfield settings, their sound power is too non-linear for farfield use. Similarly, while Mesanovic speakers may not have the best sound power for farfield listening, they perform better in that aspect compared to the KH 150s.
While you are right about the advantages of cardioid behaviour like you correctly write we should always look at the concrete data and there I don't see really significantly higher directivity in the upper bass where only the Mesanovic cardioid operates:

newplot (6).png
newplot (7).png

newplot (8).png


The D&D 8c which has a similar configuration has in contrast significant directivity in the upper bass:

newplot (11).png


newplot (10).png
 
ar
While you are right about the advantages of cardioid behaviour like you correctly write we should always look at the concrete data and there I don't see really significantly higher directivity in the upper bass where only the Mesanovic cardioid operates:

View attachment 414602View attachment 414603
View attachment 414604

The D&D 8c which has a similar configuration has in contrast significant directivity in the upper bass:

View attachment 414606

View attachment 414605
are you sure if you uploaded the right directivity plot for CDM65?

1734435713222.png

1734435730359.png

DI around the cardioid range is 6db as expected. CDM65 has 2 modes: cardioid and monopole and it seems to me that you have uploaded its measurements for monopole mode.
 

Attachments

  • 1734435696608.png
    1734435696608.png
    300.6 KB · Views: 37
Last edited:
DI around the cardioid range is 6db as expected. CDM65 has 2 modes: cardioid and monopole and it seems to me that you have uploaded its measurements for monopole mode.
Thank you, you are right, I had overseen see that there were two options in the spinorama, now it is more comparable to the D&D from 250 Hz and above (although the D&D cardioid goes lower) :
newplot (12).png
 
A bit expensive and ugly looking are the only two downsides i can find. And if those are the only negatives, you got a great speaker!

I would still prefer Neuman's KH150's altough.
And I just wanted to say how beautiful they are. They look like serious speakers and not like furniture that can play music. Most "Hifi speakers" are a scam. These here are certainly not.
 
These speaker is impressive. Distortion is acceptable considering the cardioid setup and the small drivers they use. But they are ugly, just like most of pro speaker. That is unfortunate since WISA is great for multichannel setup in normal room.
 
These speaker is impressive. Distortion is acceptable considering the cardioid setup and the small drivers they use. But they are ugly, just like most of pro speaker. That is unfortunate since WISA is great for multichannel setup in normal room.
How then ugly? Seen from the front, CDM65 looks in my eyes like any other speaker with two drivers, one of which is a tweeter with WG. Or is it the color, or the side mounted bass drivers that you think make CDM65 look ugly?
 
Last edited:
Nice speakers, great performance.
 
Reading the 2022 thread about the CDM65, I found that the side woofers are Dayton DCS165 (also mentioned by @Ktacos in an earlier post), a part currently on sale at PartsExpress for… $49.98.

To me, this points to a Company, Mesanovic, focused on solving real (audio) problems rather than ‘just’ assembling esoteric, expensive, components.
A big + in my book !!! :cool: :cool: :cool:
 
How then ugly? Seen from the front, CDM65 looks in my eyes like any other speaker with two drivers, one of which is a tweeter with WG. Or is it the color, or the side mounted bass drivers that you think make CDM65 look ugly?
They are ugly not because of form factor, rather:
1. The color: Black speaker is notorious difficult to fit with interior design of any living room. If you see the D&D 8C, nearly the same enclosure format, but the baffle is white and the side wall is wood-color, so it can easily fit with white wall/ furniture and wood furniture.
2. The ouside finish of speaker: The finish is matte so it is not fit well with modern furniture, since modern furniture near it, TV stand or even speaker stand, has typically glossy finish. Matte finish is not so bad, but if you combine it with black color then well, for me, it is ugly and cheap looking.
 
Measures and sounds great. A little too expensive for my personal taste, but for those willing to spend the money, they will enjoy the product.

Thanks again Amir.
 
The Revel comes with a free amp?
...or DSP, or cardioid directivity to under 200Hz, or the ability to be used nearfield/on a desktop... Also conveniently left out is that the F228Be retails for $5500 each when not on fire sale.

The Revel is certainly an excellent speaker, but these hot takes are something else.
 
Good lord, what did Alexander Pope say? A little knowledge is a dangerous thing...

Overzealous fans of measurements who form hasty and limited interpretations of measurements out of context and with limited knowledge are harmful in their own way

The comparisons to the KH150 and the Revel are out of whack. And as mentioned there is some subset of placements for which cardioid may happen to yield smoother flatter bass response in room.
 
Back
Top Bottom