What is Real time vs. high-speed dub?
In real time duplication, tape stock is loaded into cassette shells at the specified length and your program is recorded at real time speed. In high speed duplication a “mirror-master” is created and the program is duplicated onto a large reel of “pancake”, the large spool that professional tape stock is loaded onto, at faster than real time speed through a process called cloning. The spool is then cut down to the proper length and loaded into the cassette shells.
