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Post by MartinT on Nov 18, 2017 23:28:09 GMT
Not so keen on the Connoisseur arm which has weird geometry that tilts the headshell through its arc of travel.
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Post by Deleted on Nov 19, 2017 7:23:32 GMT
Not so keen on the Connoisseur arm which has weird geometry that tilts the headshell through its arc of travel. Thats the Transcriptor 'Vestigal arm' aint it? Vestigal
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Post by MartinT on Nov 19, 2017 8:10:12 GMT
No, the Connoisseur geometry is different and I remember seeing one in action a long time ago.
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Post by ant on Nov 19, 2017 11:12:50 GMT
Yep its bearings are offset so that the bias is applied by the mechanical lifting of the rod and weight above the arm tube, it tips the headshell to the left by a few degrees as it goes across the record.
Despite this it sounds quite nice, bearing in mind it was designed when there was probably only spherical and elliptical stylus' around which it doesnt seem make a great deal of difference to.
Nice thing is that the deck can have another arm put on it, ive seen pics of one with a proper mission 774 on it, rather than alot of decks from the period that were all in one designs with the arm integrated
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Post by Deleted on Nov 19, 2017 12:23:15 GMT
Nice thing is that the deck can have another arm put on it, ive seen pics of one with a proper mission 774 on it, rather than alot of decks from the period that were all in one designs with the arm integrated Last Truspeed I had I fitted a Mayware Formula IV to and it was superb. Even in those days (late 70s) Leak kit was going for pennies. I still have the Stereofetic tuner in the system I'm slowly clearing out my extra T/Ts the Lencos are all going to the Brookmeister, I have a Phillips for which I need a new cartridge slide, then it's on the market. The two Garrard 401s I'm not sure about.
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Post by ant on Nov 19, 2017 13:52:06 GMT
I'll give you £12.73 each for the 401s :-) Seriously though, if they are restoration projects I wouldnt mind having a look. Been a long time since I had a 401
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Post by Deleted on Nov 19, 2017 17:38:21 GMT
I'll give you £12.73 each for the 401s :-) Seriously though, if they are restoration projects I wouldnt mind having a look. Been a long time since I had a 401 They are both ex BBC decks, so a bit tatty. When I was working with Loricraft/Garrard my son was getting into DJing so we took these and serviced them. I hen built a double console for them and fitted a pair of Rega RB200s on them. They sounded better than all the Techy DJ stuff etc. I think that I will keep one and sell the other to finance doing up the keeper.
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Post by Deleted on Nov 19, 2017 19:21:37 GMT
No, the Connoisseur geometry is different and I remember seeing one in action a long time ago. O right, Dont know this Arm Martin, with you saying tilted head shell i automatically thought of the Vestigal arm..
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Post by dsjr on Nov 19, 2017 19:33:52 GMT
I thought the tonearm bearings were 45 degrees, but it's so bloomin' long since I played with an SAU2, I can't remember what tricks it had, other than sometimes having higher bearing friction in one 45 degree plane over another, this doing all manner of things to a fairly compliant stylus of which there were many back then.
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Post by MartinT on Nov 19, 2017 20:22:34 GMT
O right, Dont know this Arm Martin, with you saying tilted head shell i automatically thought of the Vestigal arm.. The Vestigial tilts like my Dynavector sub-arm. The Connoisseur is a twisting motion. Should have used that word.
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Post by ant on Nov 19, 2017 20:34:41 GMT
There is more mass presented to the lateral bearing than the vertical bearing because of the 45 degree offset (22.5 up for one and 22.5 down for the other). Rhe offset is there so it lifts the bias rod and weight as it moves. so you get more friction on the lateral bearings than the vertical bearings. The mass is also moving upwards in an arc so this force lessens the further across it gets. Its an odd solution to a non existent problem. If the bearings weren't offset and a string and weight bias arrangement was used instead, there would be no azimuth change. Still sounds nice though.
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