Path: utzoo!attcan!uunet!cs.utexas.edu!uwm.edu!csd4.csd.uwm.edu!info-high-audio-request
From: cc_s425@ux.kingston.ac.uk (Syngen Brown)
Newsgroups: rec.audio.high-end
Subject: Linn LP12 Upgrades (Re: Info-High-Audio-Digest #8.19)
Message-ID: <4825@uwm.edu>
Date: 3 Jul 90 17:06:31 GMT
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> I own a Linn LP-12 that is approximately 12 years old.  I use a Dynavector 
> DV-505 arm with a Dynavector 23D MC cartridge.  I am very pleased with the
> performance of this setup and the deck has served me well for many years.
> 
> However, if I understand the above article correctly, LP-12 may be updated
> to become even better.  Would anyone out there tell me about these updates.
> I would be very interested in recommendations.  I will post a summary on the
> net if I receive anything interesting.
> 

All Linn LP12 upgrades may be retrofitted to any LP12.  Probably, the
most important upgrade since you acquired your LP12 has been the
"Valhalla" board.  This takes the AC supply, rectifies it and has a
quartz oscillator regenerate the AC at constant frequency, this has
been around since about 1981.  An LP12 having this can easily be
recognised by the motor switch being a momentary action push switch
with LED, earlier types had an illuminated rectangular on/off mains
pushbutton with incandescent indicator.  I have heard an LP12 without
this board, and it does make a considerable sonic difference.

Since circa 1984, the subchassis has been glued rather than spot welded.
There also have been a couple of changes in the type of springs.  More
recently there has been an improved arm board constructed of medite.
I understand that there have been numerous minor changes in
manufacturing, but these are the changes which have contributed to
improved performance.

My own LP12 is just over five years old, and during that time the only
significant change in the product has been of the armboard.  The LP12
is now a mature product.

It is advisable that you have the LP12 checked over, at least every
two years.  Your Linn dealer should be able to advise on upgrading to
current specification and perform the necessary work.

=======================================================================
Syngen Brown - Systems Group, Kingston Polytechnic Computer Centre,
Kingston upon Thames, Surrey, KT1 2EE, UK.     syngen@ux.king.ac.uk
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