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Any reason for 3-way design over two way ?
You might want to look at https://www.pispeakers.comAlso I second the thought about crossovers. Your home made speaker will probably be garble at best on the first try, until you learn a lot. Expect rebuilds and replacing drivers likely for a first build. (because of incompatibility, not destruction)
The problem is that you can't just throw multiple drivers together and expect things to work. Crossover design is for experts or really dedicated amateurs with experience and measuring gear. If you are looking for good sound, buy a kit. If you are just looking to play with drivers, buy whatever you want.
High sensitivity- unless you're into the flea-watt amp thing, don't worry about this too much. Power is cheapDome midranges- less common than they used to be and I'm not sure why. AR and Allison amongst others were known for them. No technical reason why they won't work. Salk uses an inverted dome mid in some modelsThere are good and not-so-good implementations of any design approach you can name. The 'configuration' isn't necessarily predictive of the result. Answer the big questions- How big is your room, how much room do you have for speakers, how much power will you have, how loud do you want to get, and what sort of presentation best allows you to 'suspend disbelief' and forget I am listening to a recording on a playback system. Whatever you want, there are many ways to get there. Unless you are looking to engage in the equivalent of a career change and going back to school, I think the suggestion to look at GR Research is a good one if you want the satisfaction that comes from looking at your system and being able to say to yourself, "I made that." FWIW I have never heard a really first rate sound from a DIY system at a show. Leave the engineering to the 'pros' otherwise you could just end up throwing money at the goal, hoping something sticks.
So if you use dsp you take care that task;-how big is your room??-what type of bass are you expecting( flat to 20?), bass costs money, are you planning to have subs as an option?Don
Many options. Any reason for 3-way design over two way ? I would choose one manf of drivers as it would easier to design crossover. Scanspeak makes excellent drivers. Many to choose from. Dome tweeters are well liked. Do some research on drivers. Check the Manf sites very helpful. If it gets a bit to much Check out GR Research Kits. have fun trying.charles
I have heard designers say they spend more time and design effort getting the crossover right than any other single aspect of a design.
A lot of assumptions made here. Thanks for the encouragement.
• Full range system, with a 'big', transparent sound stage. Think JBL L100 / Klipsch Heresy IV etc.
If I've made assumptions, it's because I've been down this road before. If I'm wrong, and you have the experience and the measuring gear to design a crossover, then you can find your way to excellent sound. And more power to you. I've got 4 dome midrange out in the garage from when I was just starting. They are still there almost 20 years later. Just saying it isn't as easy as you might think.
I bought the original JBL L88-1 back in 1972 and converted the speaker to a L100 by adding the LE5-2 midrange. The L88 uses the same 12" 123A woofer and LE20-1 dome tweeter as the L100. A 8uF cap and L-pad completed the conversion. I have listened to the speakers daily since 1972, first at home then at my woodshop. "Full range system, with a 'big', transparent sound stage" would not be my description, it would be "FUN!" Bass rolls off fast below 40 Hz, they don't float a center image at all, music presentation is front row wall of sound but they are the best shop stereo ever!I also had the Klipsch Quartet as shop speakers before the JBL. The Klipsch sounded great and rocked with a NAD receiver but didn't sound so good when I upgraded the electronics. The NAD softened the highs which was exactly what the Klipsch needed. Higher end electronics exposed the Klipsch's flaws.But this is a story about 3 crossovers and how the same 3 drivers and 3 designers come up with 3 different layouts.The original JBL L100 has minimal parts, the 12" woofer is run full range. Troels Gravesen measured and designed a new crossover to fix the L100 "flaws"Dennis Murphy also tried his hand at a modern crossover design for the L100. Dennis is a master and designs all the crossovers for Salk speakers (my favorites) and his own company Philharmonic Audio.My L100's are stock but I did replace the original crossover parts with equal but better parts. I haven't heard the upgrades but one person has:https://audionostalgia.co.uk/jbl-l100-crossover-upgrade/"I like the JBLs for what they are and accept them with their faults..."Therefore, if you want to improve your beloved JBL L100, my advice would be to stick to the original crossover topology, replace the capacitors with better quality ones and replace the variable L-pads with new ones"Enjoy your education about crossover design, measurements help but are not the end-all to make a classic speaker. But not very many people ever make a classic, even JBL is trying to capture lightning in a bottle twice with a "New" JBL L100, I haven't heard it yet but I have my doubts. I'm waiting to hear the new L100's at a show and yell out "I own the originals and these, sir, ARE NOT L100's".
