Subsonic Death Rays (was Re: day job)

[IXQY at aol.com]

In a message dated 99-01-18 10:12:25 EST, tpaddock at seanet.com writes:

<< In a lame attempt to make this on-topic I'll mention
 when I did a vib test on a Velodyne subwoofer.  It has 
 an accelerometer on the cone in a servo loop.  It was
 powered, but no audio signal.  When I shook it at low
 freq sine, the cabinet moved, but the cone tried to 
 stay in on place.  
  >>

 A really weird thing with those Velodyne subs with the accelerometer - if you
tap your finger on the cone (no audio input, but with power on), the servo
loop tries to compensate for this "uncalled for" cone movement.... It Rings!
 Great sounding sub though.

  Andrew Sanchez