The first answer was the right one:
Half-speed" mastering refers to slowing the cutting lathe to half-speed while cutting the album stamper. This resulted in a more accurate and deeply etched groove that improved bass response and produced more dynamic sonics.
Half-speed" mastering refers to slowing the cutting lathe to half-speed while cutting the album stamper. This resulted in a more accurate and deeply etched groove that improved bass response and produced more dynamic sonics.