Xover to filter woofer SB 23NRSX45-8

[merlin el mago]

The rear wall is not straight, there is more separation between the loudspeaker and the rear wall for the left channel.

 

[merlin el mago]

More or less the difference between the rear wall & loudspeakers is 7 cm more in the left channel wich is situated in the corner of the room.

 

[GDO]

But SBA can be attenuate for 3/5 dBs😕

I think that considering the response from the right position, this point is now moot.

When you have the second speaker built, a measurement of both speakers sounding simultaneously will give you a clearer idea of the bass you will get. And the response under 200hz will no longer be the response of the left nor the right speaker, but somthing different.

Y no me vengas con que en el grave también hay estereo...😉😀

 

[merlin el mago]

Both channels FR.

 

[merlin el mago]

Schematic used last measurement.

 

[GDO]

Both channels FR.

What if you use less smoothing? 1/3 oct for instance...🙄

 

[merlin el mago]

Smoothing 1/3 oct

 

[merlin el mago]

This last measurement is done with the listening position changed.

 

[GDO]

I am a bit surprised because when 2 speakers are measured simultaneously, as there is always a difference in time arrival from each speaker, this delay causes a lot of combing making the response in the mids and highs very cahotic, while yours is surprisingly smooth.😕

Do you see 2 separate main impulses on the impulse response screen?

Btw, in the modal region your last curves are no longer as alarming as the first ones...

 

[merlin el mago]

IR of the the two loudspeakers.

 

[GDO]

Ok the 2 first impulses of each speaker can be seen, though of different amplitudes, which might be a result of hf attenuation on the first one.

There is about 1ms delay between them which should make for a dip at around 500 hz (that i don't see on your FR) and combing above that, but you have also plenty of strong early reflections that might smear that combing. Add also the smoothing on your measurement...

 

[merlin el mago]

There is a way to fix the combing at 500Hz?

 

[merlin el mago]

Nobody?