super tweeter with full range MAOP11 gen2 driver

[mountie]

Hello,
I’m currently listening to music through a pair of speakers I built myself using Mark Audio’s MAOP11 Gen2 driver units.


When measuring the sound frequency response, I noticed that the sound becomes unstable and drops sharply around 10 kHz, so I’m considering adding a super tweeter.


I’m wondering whether I should build one myself or buy a commercial unit.
If I make it myself, should it be open-backed (rear-vented), or should I redesign it to integrate with the existing speaker enclosure?
I’d really appreciate your advice on how best to approach this.

 

[Duke LeJeune]

Hello,
I’m currently listening to music through a pair of speakers I built myself using Mark Audio’s MAOP11 Gen2 driver units.
View attachment 160353

When measuring the sound frequency response, I noticed that the sound becomes unstable and drops sharply around 10 kHz, so I’m considering adding a super tweeter.
View attachment 160354

I’m wondering whether I should build one myself or buy a commercial unit.
If I make it myself, should it be open-backed (rear-vented), or should I redesign it to integrate with the existing speaker enclosure?
I’d really appreciate your advice on how best to approach this.

How was that measurement made? Is it an "in room" curve? If so, where was the microphone in relation to the speaker?

How similar is it to this driver? I couldn't find a manufacturer's curve for your "Gen2" version.

Mark Audio MAOP-11 172m Magnetic Arc Oxidized Full Range Matched Pair

Mark Audio MAOP-11 172mm Magnetic Arc Oxidized Full Range Matched Pair

www.madisoundspeakerstore.com

And finally, from your normal listening position, does it sound to you like you need more top-end energy?

 

[mountie]

How was that measurement made? Is it an "in room" curve? If so, where was the microphone in relation to the speaker?

How similar is it to this driver? I couldn't find a manufacturer's curve for your "Gen2" version.

Mark Audio MAOP-11 172m Magnetic Arc Oxidized Full Range Matched Pair

Mark Audio MAOP-11 172mm Magnetic Arc Oxidized Full Range Matched Pair

www.madisoundspeakerstore.com

And finally, from your normal listening position, does it sound to you like you need more top-end energy?

I have measured sound with UMIK-2 mic for 9 measurement points through DIRAC LIVE Software


definitely I need. when I compare with audiovector R1 arrete bookshelf speaker (another speaker I own), I found super tweeters can be solution for my problem.

 

[bonzo75]

I have measured sound with UMIK-2 mic for 9 measurement points through DIRAC LIVE Software
View attachment 160439View attachment 160440

definitely I need. when I compare with audiovector R1 arrete bookshelf speaker (another speaker I own), I found super tweeters can be solution for my problem.

For best listening experience always sit with both feet symmetrically placed on the floor in front of you

 

[Duke LeJeune]

I have measured sound with UMIK-2 mic for 9 measurement points through DIRAC LIVE Software
View attachment 160439View attachment 160440

definitely I need. when I compare with audiovector R1 arrete bookshelf speaker (another speaker I own), I found super tweeters can be solution for my problem.

Thanks for that information.

Assuming the on-axis response of your drivers is essentially what we see on Madisound's page, and assuming you listen from somewhere pretty close to on-axis, it looks to me like you are getting plenty of highs in your direct sound.

Fullrange drivers tend to be rather beamy, so we would expect a lot less high-frequency energy going out into the reflection field, and I think that's what we're seeing in the in-room measurements you made. At normal listening distances and with a fairly small-diameter fullrange driver, that measurement technique picks up a lot more reflected sound than direct sound.

What I suspect is that you have plenty of high frequency energy in the direct sound, but not enough in the reflected sound. So, I suggest a rear-firing tweeter with an L-pad so you can dial it in until it sounds right. If you add so much high frequency energy that it measures "flat" at the listening position, it will probably sound TOO bright. So you will have to use your ears.

 

[mountie]

Thanks for that information.

Assuming the on-axis response of your drivers is essentially what we see on Madisound's page, and assuming you listen from somewhere pretty close to on-axis, it looks to me like you are getting plenty of highs in your direct sound.

Fullrange drivers tend to be rather beamy, so we would expect a lot less high-frequency energy going out into the reflection field, and I think that's what we're seeing in the in-room measurements you made. At normal listening distances and with a fairly small-diameter fullrange driver, that measurement technique picks up a lot more reflected sound than direct sound.

What I suspect is that you have plenty of high frequency energy in the direct sound, but not enough in the reflected sound. So, I suggest a rear-firing tweeter with an L-pad so you can dial it in until it sounds right. If you add so much high frequency energy that it measures "flat" at the listening position, it will probably sound TOO bright. So you will have to use your ears.

Thank you very much. I get to know why measured sound and actual hearing sound are so much different.
well noted for rear-firing tweeter with an L-pad.
thanks again.

 

[Duke LeJeune]

Thank you very much. I get to know why measured sound and actual hearing sound are so much different.
well noted for rear-firing tweeter with an L-pad.
thanks again.

You are very welcome. Very best of luck with your project.