Amp.: NuForce Icon AMP (24W x 2) or
Elekit TU-870R (6BM8 single, 2W x2)
Driver: Alpair 10 V2, 4.0L sealed box/full damped
Amp.: Dayton Audio plate amp. (100W x 1, with built-in low-pass filter)
History of Bass Drivers in my system
I started with a powered subwoofer from Victor. Its sound quality was quite poor (due to maybe high amount of distortions). The digital boosted bass generated from tiny Alpair 5s was much better. I threw it away.
|Victor Powered Sub-Woofer|
|Dayton Audio DA135-8|
|Absolute SPLs are unknown. Levels are adjusted in the range of 200 to 500Hz.|
Hc: Coil length
Signal: sinusoidal 40Hz/0dB
(iii) approx. at Xmax
- The main reason why I could not be satisfied or felt some unpleasantness with those conventional woofers could be attributed to their large 3rd order distortions.
- Both Alpairs demonstrated excellent sound quality with much less 3rd order distortions within Xmax range comparing to conventional 13cm woofers. One of primary reasons for this could be attributed to Alpairs’ low mechanical losses thanks to ultra thin and soft spiders and edges.
1. Increase magnetic force relative to mechanical loss:
Rectangular wire for voice coil (Alpair 10 use this)