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Project Q

Project Q
Design Goals
Driver Selection
Enclosure Assembly
Crossover Design
Conclusion
Parts List
- Conclusion -

I've spent months listening, and honestly this is one of the best speakers I've ever heard. I've been to many DIY meets, and heard a LOT of speakers. I think this one would definitely stand out among the best. The soundstage, balance, and accuracy is stunning. They really show some flaws in recordings..which is exactly what they were designed to do. If anyone is interested in a super accurate speaker, this is it.

What to do if you want to build these:
  1. Email Erik Francey efrancey@yahoo.com buy the boxes from him.it saves so much time and you still get to put everything together and finish the boxes etc.
  2. Email me if you have any questions mattyo5@aol.com
  3. Tools: drill and drill bits, screws, glue of choice, egg crate foam, router (possibly), dremel (oh yeah), soldering iron, silver solder (silver is best, I used WBT 4%)
  4. Total cost - well, that's a good question.drivers cost about $300, I recommend you spend about $250 on xo components, though you can go cheaper, boxes (talk to Erik about $.its well worth it) miscellanous stuff $200-300 depending on if you use super duper wire or mahogany veneer etc. so about $1k to do it right for the whole shebang, maybe $500 if you do it on the cheap, its up to the builder

Additional notes:
  1. These speakers were finished with duplicolor truck bed coating to make them rugged..though feel free to put a veneer on them
  2. Buy the audax mids asap b/c audax is not going to be available much longer
  3. Don't ask to substitute drivers..why? because the crossover is optimized for these drivers specifically, any other driver substitution will make this design your own, not mine and might compromise sound quality
  4. I put a bevel on the front baffle.the speaker doesn't need it to test flat, though I like the look of it and the bevel might help w/ diffraction as well

Special thanks to:
  • Mike Q. - for the idea and the $ and the inspiration to keep this project going, and for the good home these will go to, and for buying Soundeasy for me to use, we would have been toast without it
  • My wife Katrina - for putting up with me during this project, I love you.
  • Jeff K and Dave K - for moral support and help with the boxes
  • Erik Francey - those boxes rock buddy, just what we needed
  • John K. - you da man! Thanks for helping finalize the crossover and your contructive comments on the sound!
  • Mike Q's family - for putting up with us in the garage using the router all night long
  • Bill C. - for the constructive comments on the sound
  • Partsexpress - for a great forum and a great project showcase to show these off and a one stop shop for these speakers.
  • Wil, Aaron, and many other board members who have helped over the years make this project possible
  • Bohdan at Bodzio software - Soundeasy ROCKS
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