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MMD > Archives > April 1997 > 1997.04.10 > 03Prev  Next


Building a Music Box
By Gregory Przyjemski

Thanks Nancy and Larry.  This information is all very useful.  I look
forward to hearing from Charlie Hind.  I guess my problem is that by
trade I am an Engineer and by nature I am a Technician.  I strive to
optimize, and create the best design for a given task.  I seem to be
approaching the design of my music box like Stradivarius built the
violin, trying to achieve the optimum sound.

Some of the questions that I have are:

  Volume of box to movement ratio?
  Dimensions, height, width, & depth ratios?
  Thickness of sides, top, & bottom?
  Materials and coatings?
  Height the box should sit above surface?
  Should the box be sealed or ported like a violin?
  If it should be ported, where should the port go and what size
    and shape?
  If glass is used as a lid or secondary lid, is vibration due to
    mounting technique a concern?
  Mounting the movement to the sound board, if mounting the "bedplate"
    off the "sound board", how high and do you use legs or block the
    sides or block the front and back?

I know, too many questions.  This is what gets me in trouble.  But the
end result of my efforts usually results in a very fine product.  This
is my first attempt in the world of acoustics so I have a steep learning
curve on this one.

Any comments, other than I'm crazy, would be greatly appreciated.

Greg Przyjemski
gaprzyjemski@papl.com


(Message sent Thu 10 Apr 1997, 15:03:59 GMT, from time zone GMT-0400.)

Key Words in Subject:  Box, Building, Music

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