Les Hemmings wrote:
Further to the "getting back into vinyl" saga....
Now have it sounding great.... but it's playing too fast. Not by much, just
enough to make things sound a tad hurried with accompanying pitch shift.
What on earth could make it play fast?
It's not had a new belt for years, it's been stored unused for 7 years.
Could this be the problem? It's the last thing I can do myself I think
without calling in outside help. If I can find a belt that is!
Any other ideas chaps?
Les
Hard to say what could make it go faster, lots of things will make it go
slower....
The 512 has a synchronous motor, so I would expect that if it goes round
at all smoothly, it would go round at the right speed. Having said that,
it could be that the pulley has some grot (technical term, sorry) round
it and that is effectively making the diameter slightly larger, and
hence the speed is fast. You say it's only slightly fast, so that could
be a cause.
Have you put a strobe disc on it, and measured just how fast it is
going? You can download a strobe disc from
http://www.extremephono.com/ftp/50Hz.PDF
From reading the 512 manual,
(
http://www.vinylengine.com/library_m...d_model=PL-512)
I don't think there is any speed adjustment on the 512, so the speed has
to be right if the motor is turning normally.
Belt slip will show up as high wow and flutter or of extreme, slow
speed, as will a tight main bearing. I suggest you give the motor
pulley a clean with lighter fuel or isopropyl alcohol, or Wodka if need
be, and check the speed again.
S.