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Category: DMM

What causes pre-echo / groove-echo?

What causes pre-echo / groove-echo?

Pre-echo on a record is somewhat of a phenomenon, it is not commonly known what causes a faint audio signal on a record slightly before the main recording. It is often the result of excessive groove swing and depth changes on the lacquer from stereo width in the bass frequencies.  This is one of the reasons as to why bass frequencies are mono’d on a vinyl record. So what actually is pre-echo or ‘groove-echo’? It is a result of the transmission of sound from one…

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DMM (Direct Metal Mastering) vs Lacquer. Which should you choose?

DMM (Direct Metal Mastering) vs Lacquer. Which should you choose?

DMM (Direct Metal Mastering) became popular during the 80’s but was soon less favourable as more cutting engineers went back to lacquer.   DMM (Direct Metal Mastering) was co-developed by Neumann and Teldec, and in stead of engraving the groove into a soft metal lacquer-coated aluminum disc, a DMM lathe engraves the audio signal directly onto a hard metal copper-plated master disc. The difference between a DMM cut and a lacquer cut is that the DMM is more precise, with sharper…

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