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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!mtuxo!drutx!pmr
From: pmr@drutx.UUCP (RastocnyP)
Newsgroups: net.audio
Subject: Re: AR, Grado, Hafler, c-j
Message-ID: <320@drutx.UUCP>
Date: Tue, 22-Oct-85 11:11:40 EDT
Article-I.D.: drutx.320
Posted: Tue Oct 22 11:11:40 1985
Date-Received: Wed, 23-Oct-85 05:46:19 EDT
References: <165@msunix.UUCP>
Organization: AT&T Information Systems Laboratories, Denver
Lines: 20
Keywords: Tonearm mismatch

There may be one of two things wrong: 1) the cartridge is defective (unlikely
but possible), or 2) the vertical tracking angle (VTA) is set wrong.

I suspect that problem may be in the VTA.  VTA is the amount of forward "lean"
the stylus has in the groove.  If angled too little (too close to 0 degrees
VTA), the cartridge will sound overly brilliant and brittle.  

If VTA is the problem, the arm needs to be raised or the platter lowered.
Since the AR arm pillar cannot be adjusted, you could try a thinner platter mat.

Another possibility is shimming the front of the cartridge in the shell.  This
usually defeats the design of the rest of the arm and should be only used in
desperate situations.

If all else fails, a new arm or different cartridge is in order.

		Yours for higher fidelity,
		Phil Rastocny
		AT&T-ISL
		ihnp4!drutx!pmr