The International Society of Antique Phonograph Enthusiasts (ISAPE) has issued new guidelines for playing records on vintage machines. Society chair Dr. Marta Meeling, PhD, DDS, issued a directive (effective April 1st, 2024) sanctioning collectors who ignorantly mismatch media (i.e., 78 RPM records) and playback devices (i.e., phonographs).
The directive states, first and foremost, that it is expressly forbidden to play electrically-recorded (post-1925) selections on acoustical-era (pre-1925) phonographs. “The mica diaphragms on the earlier instruments were not engineered to withstand the greater amount of energy contained in the groove on electrical recordings.
“Besides sounding over-driven and distorted, this can delaminate the mica diaphragm, and all of that excess sound energy has to go somewhere, so it follows the path of least resistance back down to the needle bar to the tip of the stylus—that is now trying to send energy to the diaphragm while at the same time receiving the excess energy from the diaphragm, so it’s carving away the walls of the record groove, ruining the record.”
And pre-1925 records should not be played on an Orthophonic Victrola, such as a Credenza. “The Credenza was designed as the mechanical equivalent of the Western Electric system’s recording curve. Therefore, only records made from 1925-1937 should be played on it.
“Records made afte
