Fostex FF85WK mini speaker (Double Bass-Reflex type, W.110mm, H.220mm, D.150mm)

I built a mini speaker using FOSTEX's best full range FF85WK ever.
Although it is small, it ensures the minimum necessary bass, and can be used for almighty with natural mid and high range.

The enclosure is made of 9mm thick MDF wood, and the finishing is done with vinyl sheets.
The total material cost for the enclosure amounts to $11.

HB-07F-ML+FF85WK-05.jpg
 

Attachments

  • HB-07F-ML+FF85WK-06.jpg
    HB-07F-ML+FF85WK-06.jpg
    184.7 KB · Views: 395
  • HB-07F-ML-01.jpg
    HB-07F-ML-01.jpg
    185.7 KB · Views: 430
  • HB-07F-ML+FF85WK-01.jpg
    HB-07F-ML+FF85WK-01.jpg
    106.1 KB · Views: 429
  • HB-07F-ML+FF85WK-02.jpg
    HB-07F-ML+FF85WK-02.jpg
    54.3 KB · Views: 328
It's the technically accurate term for an expanding quarter-wave pipe (aka 'horn') that has the terminus mass-loaded via a duct. ML TQWT is another (arguably less accurate, but commonly used) description.

Thanks, Scott.


Since this is not a double bass reflex design, perhaps it would be good to change the subject line accordingly?

I designed it as a double bass reflex, but since the design and measured resonance frequencies of fd1 and fd2 are the same, I think I can call it a "double bass reflex".

https://core.ac.uk/download/pdf/72747450.pdf