Xover to filter woofer SB 23NRSX45-8

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GDO

GDO

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Joined 2009
merlin el mago said:
But SBA can be attenuate for 3/5 dBs:confused:
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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...;):D
 
merlin el mago

merlin el mago

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Both channels FR.
 

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GDO

GDO

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Joined 2009
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.:confused:

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...
 
GDO

GDO

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Joined 2009
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...
 
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