I've split this off from a HiVi B3S thread so the orginal thread is not hijacked.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=106632
This is a comical little speaker made from a 100mm PVC T-piece. There's quite a deal of items in hardware stores that can be adapted for diy audio.
This speaker was to give me a break from a 3-way that's taken 6 weeks to design, 2 weeks to build, 2 weeks of revisions and still on going. Here was something that could be made in 2 days and I was after another speaker for the computer. The TB W3-871SC looked the goods and TB was a driver I wanted to try even though I don't do many fullranges. For Australians that are after TB drivers, check Darcher Audio.
http://www.darcheraudio.com.au/
Since the baffle diameter is only 117mm, BSC was a must as well as a zobel to tame the impedance from hell.
Actual pipe T was 3.3 litres (filled with water) so a design was done for near field use (<1.5m) in a small room.
Vb=3 litres, Fb=85Hz vented , ø30mm x 55mm port, F3=73Hz. In a small room there was enough bass so a small sub was not required as initially thought.
The front chamber is lined with felt and the back has an acoustic tile cut to size and folded in a vee. There doesn't seem to be an issue with the backwave and assume that's because of the very small driver Sd. The driver is offset on the baffle to assist in diffraction (mild at best) but to ensure distances are different to the inside surfaces from the driver.
As I've said previously, no dogs allowed with 10m.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=106632
This is a comical little speaker made from a 100mm PVC T-piece. There's quite a deal of items in hardware stores that can be adapted for diy audio.
This speaker was to give me a break from a 3-way that's taken 6 weeks to design, 2 weeks to build, 2 weeks of revisions and still on going. Here was something that could be made in 2 days and I was after another speaker for the computer. The TB W3-871SC looked the goods and TB was a driver I wanted to try even though I don't do many fullranges. For Australians that are after TB drivers, check Darcher Audio.
http://www.darcheraudio.com.au/
Since the baffle diameter is only 117mm, BSC was a must as well as a zobel to tame the impedance from hell.
Actual pipe T was 3.3 litres (filled with water) so a design was done for near field use (<1.5m) in a small room.
Vb=3 litres, Fb=85Hz vented , ø30mm x 55mm port, F3=73Hz. In a small room there was enough bass so a small sub was not required as initially thought.
The front chamber is lined with felt and the back has an acoustic tile cut to size and folded in a vee. There doesn't seem to be an issue with the backwave and assume that's because of the very small driver Sd. The driver is offset on the baffle to assist in diffraction (mild at best) but to ensure distances are different to the inside surfaces from the driver.
As I've said previously, no dogs allowed with 10m.