Speaker crossovers


I want to dip my toe in making a pair of DIY open baffle speakers using one 15 inch coaxial driver per speaker. Can anyone explain (at the 4th grade level  :)  why I need crossovers for coaxial drivers? Seems to me if I need crossovers, I might as well use separate drivers. I ask because I'd like to use a couple of these: 

https://www.bcspeakers.com/en/products/coaxial/15-0/8/15cxn76 

To complicate things the specs recommend XO-4 crossovers which I've found only to be manufactured in Italy. I thought the whole advantage to using coaxial drivers was so one wouldn't have to bother with crossovers. Guess I'm wrong. Please explain why and how one would hook up the crossovers. Also, what would happen if I didn't use crossovers (decrease the sound quality of the drivers or amp? Destroy or damage one or both)? Are there any high quality 15 inch coaxial drivers with "built-in" crossovers? I need "simple"  :(
mewsickbuff

Showing 3 responses by mewsickbuff

millercarbon, how (besides reading) do we learn if we don't ask? Even students have teachers. Nobody starts out an expert  :)  oldhvymec, sounds like you might've built speakers. What kind? Never knew there were specific drivers for open baffle. Once I get a grasp on crossovers I'll get to work. One things for sure, coaxials take up less space...


Thanks to you all pointing me in the right direction, I've spent some time doing due diligence. I now have Lii Crystal 10 full range drivers burning in (almost 200 hours) on open baffles and am expecting a pair of Acoustic Elegance dipole 15 woofers within the next week or so. These speakers are recommended specifically for OB. Slowly but surely learning about and how to build crossovers specific to my speakers. Hopefully, @millercarbon, when this old gal (who knows less than kenjit) is done, I'll let you know how they sound and post a picture or 2  :)

 

Here's my system with DIY open baffles (Yes, I made them). Not saying they're the best, but they're the most open, detailed speakers I've ever owned.