The broad overlap isn't likely to help vertical directivity. A sharper corner will minimize the range of bad lobing. Horizontally, low order might do blending of horizontal directivity better, assuming blending is what is really wanted.
Move the XO down to where the centre-to-centre is less than a quarter-wave length and the drivers appear to be co-incident. No (oe little) loving.
dave
I’ve posted this many a-time going back to the bass list in the 90s. Traveling right now so I don’t have direct examples at my finger tips as I’m away from my PC, sorry about that. But you can see the effect pretty readily in Xsim if you have some on and off axis driver files at your disposal
Moving the corner down makes the requirement for several octaves of overlap even more of an issue that it already is. Unless you go 3 way or more. Did that in the past, really wasn't impressed.
is it fare to say that speaker drivers work against the engineer who must compromise in each and every decision he/she makes.
- Choosing low order filter, harmonic distortion and IM as well as cone breakup sets in before you reach sufficient low enough dB to avoid it blending in with the useful range.
- Choosing high order filters and you typically can avoid that which is problematic for low order, but you get more and more phase shifting and unwanted time delays.
- Choosing hard cone materials return more details and transparency which many like, but it also introduce hard cone breakup and resonances.
- Choosing softer materials is more laid back and relaxed, covering up issues in the driver, but takes away details and has less transients which make it sound warmer.
What a fun hobby .... LOL
- Choosing low order filter, harmonic distortion and IM as well as cone breakup sets in before you reach sufficient low enough dB to avoid it blending in with the useful range.
- Choosing high order filters and you typically can avoid that which is problematic for low order, but you get more and more phase shifting and unwanted time delays.
- Choosing hard cone materials return more details and transparency which many like, but it also introduce hard cone breakup and resonances.
- Choosing softer materials is more laid back and relaxed, covering up issues in the driver, but takes away details and has less transients which make it sound warmer.
What a fun hobby .... LOL
^Yep like mission impossible for us diyers!
Fortunately every single high-end loudspeaker company have managed to solve all those problems in perfect way! 😛
Fortunately every single high-end loudspeaker company have managed to solve all those problems in perfect way! 😛
And thus we have dozens of equally valid loudspeakers that sound quite different, and prefer certain amps & rooms.
dave
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