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Combination of 1st order and 2nd order crossover in 3 way box

I'm re-doing some old Sansui 3 way boxes.  Is it crazy to use a 2nd order crossover between the mids and highs but a 1st order between mids and lows.  I want to crossover at 375Hz and 3K Hz.  With the response of the mid and high drivers I think they would be better served with a steeper slope at the 3k mark.  Does anybody have a crossover designer to help me with this or am I going to cause more phasing problems that will negate the benefits?
dannybad

Showing 2 responses by erik_squires

erik_squires
15,877 posts
 
Danny,


If you don't know the driver response, and acoustic offsets you can't possibly be talking about crossover typologies yet.


You really are a lot further than you think.  May I strongly suggest, try your hand with the simulated speaker I posted. See if you can make it work. If you start a thread on DIYaudio let me know and I'll jump in and discuss.


The simulated speaker is free, and you will learn a great deal quickly.


Best,

Erik
erik_squires
15,877 posts
 
Hey, diyaudio.com is probably a better place for this question.


The poles are picked based on the electroacousutic blending. You can't just willy-nilly pick new ones without being able to simulate the whole speaker. Also, asymmetric filters are pretty normal.


The only time I might suggest you should consider more aggressive slopes are usually to protect a driver, especially the tweeter.


It sounds like you are not nearly ready to start this, but I encourage you to go on your path. If you'd like, I posted all the simulation files for a speaker online.  Why don't you try your hand at it? You can remove all the parts and compare to the reference design when you are done.


https://speakermakersjourney.blogspot.com/2016/02/the-lm-1-bookshelf-version.html
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