Beyma 6MCF200Nd measurements

[Frankx]

Hello everyone,
Since I think this is a midrange driver of absolute interest, I'll post some measurements I made on the same. Free air 10cm, 90db, 1/48 smoothing. As soon as I can, I'll post another speaker as well so I have a comparison term.
Listening, the Beyma is very detailed, open and, when cut before breaking up, despite its carbon diaphragm, it does not seem to show remnants of such breaking up with great clarity, as is often seen in speakers with diaphragms made of aluminum, for example.
Compared to other midrange speakers (both professional and hi-fi), this is currently the best sounding one I have heard.
Best regards
Franco

 

[Frankx]

18 sound 6nd410, another well regarded and subjectively very well sounding midrange. Subjectively sounding almost on pair with the beyma, except for the different timbre given the different material of the cone.

 

[Frankx]

PHL 1630 midwoofer

 

[tmuikku]

Hi, are you evaluating them equalized for same response, or just naked without any equalization?

 

[Frankx]

Stage line SP6/PA-150 mid woofer

 

[Frankx]

only frequency responses (please note: non matched spl)

 

[Frankx]

Hi, are you evaluating them equalized for same response, or just naked without any equalization?

These measures are naked, without any EQ. Note that only all except the beyma (that has a closed back) are free air, baffle less

 

[Frankx]

Some measures with reasonably equalized drivers. The figures are in this order: 1) beyma, 2) PHL, 3) stage line. No 18 sound unfortunately. All measured at 2m, 90db. Pseudoanecoical measures in a small room at 2m distance... so take these last measures "cum grano salis". The idea was to listen to the EQed drivers not to measure them. Nonetheless these measures can help reasoning about these mid. As you can see the beyma keep a much cleaner decay with much less stored energy.

 

[Frankx]

Subjective listening to the equalized drivers (my subjective opinion only, mind you) revealed that the Beyma and the 18 sound the most pleasant, the Beyma more detailed and minimally more neutral and the 18 with the more typical paper cone sound (very pleasant, though in my opinion less pleasant than the Beyma, but that's a matter of taste). Detached from the first two, the PHL still sound very detailed, but with a less pleasant note that I still do not know what it is (it was the only one that was ever not broken in). Finally, the Stage Line was darker and less detailed.
I find it interesting that a midrange like the Beyma, born to sound loud, can be both pleasant and pleasantly HiFi (ie HiFi for those who like high efficiency and analytical sounds like those of the TPL 200, which I will use as a tweeter along with the Beyma, with which it harmonizes better than with any other midrange I have heard.

 

[tmuikku]

thanks!

I don't have experience comparing drivers and not sure if I have possibility to as prices have skyrocketed. If you don't mind I ask some further info to be able to reason if the same conclusion would apply for my application and context:

• for what bandwidth did you equalize them, high and low pass?
• depending on the bandwidth did you listen exactly on-axis or off-axis? or just general feel throughout the room?
• the drivers without back cover would have different directivity so was this test outside or in a room?
• listening axis SPL response matched?
• AB comparison with some switching scheme side by side or one after another with some time between?

Also a thought came to my mind, if two drivers were equalized exactly the same frequency response but the other sounded brighter than the other, it would have more distortion so the duller more boring one one would actually be the better driver.

This is nothing personal and I'm truly grateful for people doing tests and posting them but I've started to question the value because if my context was different another driver might win so its not straight forward. I have no doubt you can pick best driver for you, and anyone else if they do tests in their context for them, its just that its tough to get correct message delivery in written form without actually hearing the sound.

 

[picowallspeaker]

I don't understand, Sorry
How Is the evaluation done? You Say EQed...so that means for a midrange to play... midrange! Or Is It implied that Is EQed because of a crossover so It plays with a woofer and a tweeter?
And, without any equalization/filtration, how it's the quality evaluated? By listening to voices singing?

I'm asking because...I remember (loud!) Rap (...horror!!) Coming very good when I First attached a pair of audax pm170, and they're the only I got so I'm interested in the betterments, if any, in Pro midranges

 

[picowallspeaker]

I typed too slow ..
Need to put dictionary in Cell phone,
Gotta admit...😉

 

[picowallspeaker]

audax pm170, and they're the only I got so

Hmmm...the surrounds are rotting 🙁

 

[Frankx]

thanks!

I don't have experience comparing drivers and not sure if I have possibility to as prices have skyrocketed. If you don't mind I ask some further info to be able to reason if the same conclusion would apply for my application and context:

• for what bandwidth did you equalize them, high and low pass?
• depending on the bandwidth did you listen exactly on-axis or off-axis? or just general feel throughout the room?
• the drivers without back cover would have different directivity so was this test outside or in a room?
• listening axis SPL response matched?
• AB comparison with some switching scheme side by side or one after another with some time between?

Also a thought came to my mind, if two drivers were equalized exactly the same frequency response but the other sounded brighter than the other, it would have more distortion so the duller more boring one one would actually be the better driver.

This is nothing personal and I'm truly grateful for people doing tests and posting them but I've started to question the value because if my context was different another driver might win so its not straight forward. I have no doubt you can pick best driver for you, and anyone else if they do tests in their context for them, its just that its tough to get correct message delivery in written form without actually hearing the sound.

1) 200-10000
2) on axis
3) no space to do that
4) yes (approximately matched, no scientific comparison or such)
5) ab short switching time (minidsp flex 8 switch from a setting to another)

 

[Frankx]

I don't understand, Sorry
How Is the evaluation done? You Say EQed...so that means for a midrange to play... midrange! Or Is It implied that Is EQed because of a crossover so It plays with a woofer and a tweeter?
And, without any equalization/filtration, how it's the quality evaluated? By listening to voices singing?

I'm asking because...I remember (loud!) Rap (...horror!!) Coming very good when I First attached a pair of audax pm170, and they're the only I got so I'm interested in the betterments, if any, in Pro midranges

I know what you mean! The drivers were EQed 200-10000with rew auto eq with only subtracting filters (allowing only spl reduction not increases). The Corrected responses are published. For most of the listening test the drivers were bandpassed 300-3000 BW 48db but not for the measures published that were only EQed but not bandpassed. I have also tried to add a woofer (JBL 2226) and a tweeter (beyma tpl200b) to listen to an ensemble. Obviously in this configuration the differences are more subtle but still audible. The beyma give the best integration to the TPL200. It's a pity that cannot go lower, maybe can be worth the time to give a check to this (https://www.beyma.com/en/products/c/low-mid-frequency/110MCF40ND8/altavoz-10mcf400nd-8-oh/) but although it goes down a little more, it goes up less and has more beaming problems. Nonetheless, a friend told me that it is worth giving it a listen as to liveliness and body. Expensive though!

 

[Frankx]

I typed too slow ..
Need to put dictionary in Cell phone,
Gotta admit...😉

The pr170 was my first attempt to dive in the high efficiency midrange arena. These are a step ahead, specially beyma and 18 sound. The PHL have a similar sound to pr170 (how to explain...a bit acid? take with salt: these attempts to describe a sound in words always oscillate between the ridiculous and the contrived) but with some advantage over the first. A matter of taste though.

 

[Frankx]

Midrange band (400-3000Hz), 3rd armonic distortion comparison (1: beyma, 2: PHL, 3: 18 sound, 4: stage line). Free air, no EQ, no baffle, 90Db.

 

[Brett]

Which PHL are you testing here?

 

[Frankx]

PHL 1630

 

[Jaypee]

Can you do some IMD comparaison?

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6MCF200Nd looks like an incredible speaker.