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amsmart

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  • Location
    Melb
  • Country
    Australia
  • First Name
    Alastair
  1. Hello all, About 20 or so years ago, a friend gave me his "faulty" Dynevector Karat 23R (head-shell mounted) and a MC pre-amp (not high quality - home made ?). He was going totally digital and parting with his TT and vinyl collection. This cart, in a box, sat in a cupboard until just recently when I though I'll try it on my Grace G707 (see another post of mine regarding this arm). After setting it up as best as I could on the Grace, I played some records, but audio (good as I could tell) came from only the LEFT channel - nothing from the RIGHT. After checking everything, I have concluded that the Dynevector is indeed the faulty component and not the inter-connects or pre-amp. Removing the cart from the head-shell, I carefully did some fault-finding. The LEFT coil DC resistance is 30ohm (as measured with a DMM) which I believe is correct but the RIGHT measured an open circuit. I double-checked this a few times but same result. On inspection under a professional microscope, the cantilever, tip, internal tiny wires, and everything looks "perfect" so I assume the coil itself is open. The coil (armature) is hidden and not visible and is not accessible without some micro-surgery and possibly damaging things further. I do have micro-electronic "surgery" equipment but it looks like the cartridge - inner case, magnets, wires etc are bonded together with an epoxy or some other material. Does anyone know if this can be fixed or even parts of it (like the beautiful ruby cantilever and diamond tip ) be removed and re-used?. Does it have any worth to anyone? thanks.
  2. Thanks for everyone's reply. I'll probably go a AT VM540ML (suggested by DeepEnd and others elsewhere) due to its close compatibility, excellent reviews, under budget and its available at my local vinyl shop, a quick bicycle ride away. I looked into the other suggestions - I'm a little dubious of paying quite a few hundred $ for a used cart from a supplier on the other side of the world. Have been bitten before! Thanks Stevoz. Re wen, the Garrott P77i and MCs are over my budget unfortunately. Could not find any MC20s for sale. Thanks for the suggestions and explanations. I'll post back with my results.
  3. Hello all, Turntable: Rega Planar 2 Tonearm: Grace G707 (Both 1980s, excellent condition) I'm looking for a replacement MM cartridge for my Grace G707 (which has a non-replaceable headshell). The original cartridge, an Ortofon VMS 5E MkII broke recently (tip broke off completely). Looking for something that will be compatible with the G707 and perhaps a step-up in performance. Budget ~$500Au or so. I've looked at Ortofon 2M Bronze but don't know if are suitable or compatible with the tonearm Any recommendations or advise? Thanks.
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