Visaton Concorde MK3 room measurements (and eq questions)

[Slotenpiloot]

Looks like FusionDSP already uses CamilaDSP in the background. It seems to support parametric EQ as well. Did you use that already?

No convolution filters only and graphic eq.

 

[abdo123]

Did you take impedance measurements of the speaker after you've finished building it to see if everything matches the designer's measurements?

You don't expect a low Q 3dB drop in the midrange like that in most speakers.

Edit: did Visaton publish any measurements at all?

Edit 2: This is ROUGH.

Edit 3: I meant the impedance measurement, not the frequency response measurement.

 

[Slotenpiloot]

Did you take impedance measurements of the speaker after you've finished building it to see if everything matches the designer's measurements?

You don't expect a low Q 3dB drop in the midrange like that in most speakers.

Edit: did Visaton publish any measurements at all?

Edit 2: This is ROUGH.

No i did not do any impedance measurements, and about visaton, is there a guide on how to on the forum? And yes they did publish measurements.

CONCORDE MK III | Visaton

The CONCORDE MK III 3-way system may not be able to fly, but in terms of sound, it really soars. The mere shape and the drivers used give an idea of its qualities. The tailored baffle in the medium to high-frequency range produces optimised omnidirectional sound distribution one of the reasons...

www.visaton.de

 

[abdo123]

No i did not do any impedance measurements, and about visaton, is there a guide on how to on the forum? And yes they did publish measurements.

CONCORDE MK III | Visaton

The CONCORDE MK III 3-way system may not be able to fly, but in terms of sound, it really soars. The mere shape and the drivers used give an idea of its qualities. The tailored baffle in the medium to high-frequency range produces optimised omnidirectional sound distribution one of the reasons...

www.visaton.de

Impedance measurements are kinda necessary to make sure that whatever you have on hand matches what the designer built. I have never experienced such a low Q dip in the midrange in a domestic space before. Usually domestic rooms have a boost in that region and a null around 100Hz to 300Hz.

 

[abdo123]

To give you some prespective on how a flat speaker should measure in-room. Here are some measurements from my living room with the same scale you used in your original post.

 

[Slotenpiloot]

Impedance measurements are kinda necessary to make sure that whatever you have on hand matches what the designer built. I have never experienced such a low Q dip in the midrange in a domestic space before. Usually domestic rooms have a boost in that region and a null around 100Hz to 300Hz.

Could it be that my settings for rew in combination with the test file are wrong?

Ill figure out how to do the readings, it might take some time because i have two really nice holiday trips planned

Thanks everyone for the help, its much appreciated!

 

[abdo123]

Could it be that my settings for rew in combination with the test file are wrong?

Well i was only commenting on your very original measurement. This should not be effected with any EQ you may have placed.

 

[Slotenpiloot]

Well i was only commenting on your very original measurement. This should not be effected with any EQ you may have placed.

I understand, but could it be that the measurement was made with the wrong settings?

 

[abdo123]

I understand, but could it be that the measurement was made with the wrong settings?

As long as the microphone was on the tweeter axis it should be okay.

 

[Slotenpiloot]

As long as the microphone was on the tweeter axis it should be okay.

It was, guess the first thing to do for me is the figure out the impedance.

Thanks

 

[Slotenpiloot]

That looks more like -15dB. But other than that, this is what you would expect right?

Yeah, but as expected since i dint target anything specific

 

[Rednaxela]

i dint target anything specific

I see. How about trying that with PEQs first?

Edit: as also hinted at by @voodooless in post 20.

 

[Slotenpiloot]

I will try those once i get back from holiday, i cant do those tonight (my neighbors would probably kill me, and that would be quite detrimental to my listing experience)

Wouldnt it be the same as using as convolution filter though?

Note: i am completely new to this stuff so please bear with me

 

[Rednaxela]

Wouldnt it be the same as using as convolution filter though?

It’s technically different.

I think it’s also easier to get to grips with when you’re just starting out. With potentially very satisfying results as well.

 

[lewdish]

How close are visaton's driver measurements in relation to reality?

 

[Hayabusa]

As the peak is very sharp, you need a high q filter to compensate. What 42Hz filter settings did you use?

Edit, after looking at the curve the 3dB width of the peak is ~4Hz which is 10% what would results in needed Q of ~10