To design a small speaker with a big sound, with the aid of the Klippel Near Field Scanner for complete measurements in 360 degrees!
Classic 1/2 cubic foot (14L) 2 way with 6.5" midwoofer / 1" tweeter, stand-mount
Midwoofer: Purifi 6.5" Xtended x-max aluminium cone, https://purifi-audio.com/ptt6-5x04-naa-08/
Tweeter: Scan-Speak 26mm dome tweeter with low Fs: https://www.scan-speak.dk/product/d2604-833000/
Natural in-room bass down to 40Hz, High power handling / low compression design
Optimised for smooth in-room response and class leading harmonic distortion
Easy to build design - no large roundovers, no facets.
Designed the Toyota way- easy to repair and easy to get replacement parts (Purifi and Scan-Speak), not closeouts or drivers that may disappear without notice.
Designed for free standing (>60cm from front wall ideal)
Stretch goals- optional close to wall, or against wall or desktop mounting (no ETA), facets near tweeter for smoother treble response (no ETA)
Verified by Klippel Near Field Scanner: high resolution accuracy (2Hz, +/- 0.3dB) out to 360 degrees horizontal and vertical)
Active crossover completed
Passive crossovers to come (no ETA yet)
paper cone variants to come (no ETA yet)
Pictures to follow: Updates via my FaceBook page.
The measurements and design alone costs US$500-1000.
How to order- Donate to your favourite charity and send me proof of donation via PM.
With a message "Danish Duo" in your PM- a password protected PDF file with the plans will be emailed to you.
PS. Pictures to come this weekend
Pre-orders starting soon.
Full disclosure: I sent the speaker to be measured a month ago. Erin did not ask for any funds, and agreed to measure them “for the benefit of the DIY community”
I decided release it as “donate-ware”; All correspondence and enquires should be sent to me...
No kickbacks were involved in the design of this speaker. ie. I bought and paid for everything. 1 Purifi driver was killed when my prototype cabinet fell from my rotating turntable.
Thanks to cabinet maker who built my cabinet and Purifi and Scan-Speak who built the drivers and Erin Hardison who measured them, but I doubt they will comment on them.
This is my project, for better or worse.
Edit: No idea where to donate? visit www.givewell.org and do a bit of charity shopping…