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Multi-Way Conventional loudspeakers with crossovers

Seas Excel W18EX001 vs Scan-Speak 18M/4631T00
Seas Excel W18EX001 vs Scan-Speak 18M/4631T00
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Old 13th August 2018, 10:46 AM   #241
3wayaddict is offline 3wayaddict  Netherlands
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I really want to diy because I really like it but I ment I don't have time to continuously have one project after the other which is why I try my best so hard to do it as good as it can be the first time even though I know it's not the best way to go which is why I really rely on you guys.

Now that I know what software I can use and that you can help me I don't want or need someone else too do the simulations. Why would I want a LR12 filter and why is it not possible with my cabinet and would it be a bad thing?
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Old 13th August 2018, 11:05 AM   #242
Rokytheman is offline Rokytheman  Denmark
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Okay got it. In the end the drivers you have nailed it down to are som of the best on the planet. And for sure the drivers can play together.

LR12 is a second order filter. It requires that the tweeter and mid are acoustically on the same axis. They are typically not on a flat baffle. I think to really nail it, you need to try different slopes. Some prefer higher slopes, some do not. It can make quite a difference to how the sound is perceived. Dont buy expensive crossover components to start with.

Also common is a crossover of odd orders.
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Old 13th August 2018, 11:25 AM   #243
3wayaddict is offline 3wayaddict  Netherlands
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So actually LR12 is reserved just for coaxial?
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Old 13th August 2018, 12:56 PM   #244
Rokytheman is offline Rokytheman  Denmark
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No, but it requires well behaved drivers to make a LR12 filter. Specifically on accoustic allignment see this:

Time-Alignment



On Troels Gravesens page there is a HUGE load of information about how to make and design a speaker.
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Old 13th August 2018, 04:40 PM   #245
Pida is online now Pida  Czech Republic
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Regarding front baffle, mid on top is the right choice. The baffle fills in the dip around 1300Hz, see comparison of MR16 response (horizontal 0-90deg) for MT and TM configurations. But, in my case, tweeter response for MT configuration was much worse, and with LR2/LR2 the modelled FR was worse. That is why I went with TM configuration. In your case, large (~R50) baffle roundovers around tweeter should help.
Attached Images
File Type: png MR16P H 0-90 MT.png (89.8 KB, 55 views)
File Type: png MR16P H 0-90 TM.png (81.7 KB, 54 views)

Last edited by Pida; 13th August 2018 at 04:42 PM.
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Old 14th August 2018, 08:57 AM   #246
Rokytheman is offline Rokytheman  Denmark
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Interesting to see how the dip changes. Cool.
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