it was on 15 IPS with DBX. It was fabulous with no trace of tape hiss and superb dynamics which totally blew away Dolby D.
Back in the day, that was known to be the best playback system.
Dolby noise reduction
I’ve brought up this topic before, and I believe my point was misunderstood. so, I’m trying again.
Many A’goners have commented that recordings originating in the late 50’s and early 60’s which have been transferred to CDs sound particularly open with better soundstaging than those produced later.
Ray Dolby invented his noise reduction system in 1965 to eliminate what was considered annoying tape hiss transferred to records of the time. The principle was to manipulate the tonal structure so as to reduce this external noise:
“The Dolby B consumer noise-reduction system works by compressing and increasing the volume of low-level high-frequency sounds during recording and correspondingly reversing the process during playback. This high-frequency round turn reduces the audible level of tape hiss.”
I maintain that recordings made prior to 1965 without Dolby sound freer and more open because the original tonal structure has not been altered and manipulated.
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