Location: Norfolk
Posts: 69
I'm John.
It gives the cutting head an easier time of it. It doesn't get so hot, and the groove is better cut as a result.
You need to get the eq correct when you do it - something at 80Hz translates to 40Hz at the cutter head.
Recent half speed cuts tend to use 24/96000 digital files, because they're easier to manipulate in the digital realm.
If you do it in the analogue domain every point of contact in the tape path can adversely affect the result.
Chris
Common sense isn't anymore!