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From: mohan@uscvax.UUCP (Rakesh Mohan)
Newsgroups: net.audio
Subject: Phono Cartridge and Cleaning Records
Message-ID: <180@uscvax.UUCP>
Date: Fri, 19-Apr-85 02:12:53 EST
Article-I.D.: uscvax.180
Posted: Fri Apr 19 02:12:53 1985
Date-Received: Sun, 21-Apr-85 06:06:26 EST
Distribution: net
Organization: CS&CE Depts, U.S.C., Los Angeles, CA
Lines: 24

1. I have a Magnavox turntable (FP 7130) with the following cartridge:
   Model #    (Magnavox)               GP 330
   Sensitivity (1 kHz)                 0.8 mV/cm/sec
   Output Asymmetry (1 kHz)             <= 2 dB
   Channel Seperation (1 kHz)          >= 22 dB
   Stylus (diamond)                    15 um (spherical)
   Stylus Force                        15 .. 30 mN (1.5-3.0 gm ?)
   Dynamic Compliance (lateral)        >= 20 mm/N
   Trackability                        >= 80 um ( 2gm)
   
	The cartridge is Magnetodynamic (could someone please explain
what this means) and does not seem to be a P-mount type ( I tried to
remove the cartridge from the tone-arm but couldn't). Is it worthwile
replacing it with a different cartridge ( < $50) and if so, which one?

2. I recently obtained about 50 LPs at a sale. Most of them are not
sealed and although not scratched, they are dirty. How should Io
give them a first time cleaning?

Thanks

Rakesh Mohan
mohan@usc-cse
mohan@eclc