Hi,
it is necessary to "dehorn" mothers when the master was
a lacquer disk. Thats what all good plants do.
but it has to be done right. otherwise a looot problems can occur. (Don´t want to write a book now..)
This information on your mothers is important that it will not done twice.
afaik all good german pressing plants dehorn (in german : polieren = polish or schwabbeln) their mothers to get
proper quality pressed.
Good ones listen to the entire mother if it´s ok (1st audible quality check). One plant i know is able to cut out crackles which caused by dust when it was on the lacquer while silvering.
This can happen when dust sticks to the disk and could not be removed completely after washing the lacquers.
This is mostly interesting for laquers which get shipped in
dusty boxes or for audiophile stuff.
They can also repair overcuts sometimes, then they are nearly unhearable.
When i make cuts for overseas pressingplants to make sure the
quality of the record will be good i often sending them mothers from my favourite plant (dehorned, and tested) so the other plant
just have to do the stampers and can press. Makes more sense then to send out lacquers on a long journey, especcially not if its summer. And if you know that a plant has a bad Galvanik quality.
A lot of myths are going around if a mother is polished (dehorned) to long or to hard the highs can get lost.
Anyone made some experiments ?
greetings
Andreas
Schnittstelle
Mastering & Vinylschnitt
Frankfurt - Germany