H e l i o s    Picture     EQ/XO 

  MR earl's page 

L.E.Selmer   H e l i o s   A Symmetrical Dipole Speaker System

   A Significant Aspect of  H e l i o s  is the
 Equal and Complementary   Front and Rear Illumination.

   When one walks around a musician playing in a room,
 the sound is fairly Constant,  but  if one walks around most
 commercial speakers they don't sound complete from the rear
 because most of the top 3 octaves of the Musical Scale are missing.
 Old & Recent evidence shows that speakers sound Livlier when
 illuminating the space more like Real Musical Instruments.

            The  Inspiration for Helios came largely from Siegfried Linkwitz.