In 1908 Edison increased the playing time of the cylinders. From 1888-1902 the speed of the records varied so the record could fit the song, anywhere from 90-144rpm. After 1902 the speed was standardized at 160rpm. In 1908 Edison cylinders...
The Edison Triumph Model D pre-dates the Edison Opera. The lightweight, freestanding horn is something of a wonder in that there is no need for a crane to support the horn.
Notice the wax cylinder being used on this instrument.