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What Tonearm is this?

theoman

Confused Member
Subscriber
Anyone know what tonearm this is? shell is fixed.
 

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here is a front

It's a Jelco 250ST. Could be a number of different names on it as it was used by lots of companies. AR, Revolver, Sonographe, Mission, Audioquest, Koetso, etc. Budget entry level arm on level playing ground with the Rega 250. Runs 12grs effective mass. 210mm mounting distance with "linn" mounting pattern. 18mm overhang (228mm total) the little notch in the very front of the headshell area is 228mm. Set the stylus below that for Baerwald nulls. Easy arm to set up.
 
But, If you look at the flange were the anti-skate dial is located.
Its squared off.
The Jelco 250's Ive seen are rounded off
 
But, If you look at the flange were the anti-skate dial is located.
Its squared off.
The Jelco 250's Ive seen are rounded off
The square flange reminds me of the Mission 774LC (yet another 250 variant) but your's doesn't have the stepped arm tube :scratch2:

EDIT It could be a standard Revolver arm (picture added)? Reasonable arms if you stick to moving magnets.
 

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But, If you look at the flange were the anti-skate dial is located.
Its squared off.
The Jelco 250's Ive seen are rounded off

That is correct. The earlier 250 variants had the square bias boss. The later ones have the round boss. The ones with the square boss also have a smaller diameter horizontal bearing boss.
 
Hi All. Can anyone tell me what tonearm this is please . I think its a Thorens model, but I'm really struggling to find anything online. Would like to find the correct manual for set up. Thank you for any help!
 

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Google images says it's a TP16 Isotrack. Pretty sure that armwand is suposed to be straight. ;)

jeff
Thanks Jeff. I was not sure if it was meant to be straight, thats kinda why Ive been having trouble finding the curved one lol. Sounds fantastic, would you know why some one would bend it? I have it set up quite far back in the headshell and it really helps with the hot grooves. Thanks
 
Thanks Jeff. I was not sure if it was meant to be straight, thats kinda why Ive been having trouble finding the curved one lol. Sounds fantastic, would you know why some one would bend it? I have it set up quite far back in the headshell and it really helps with the hot grooves. Thanks

It should be straight. Some savage has bent the tonearm pipe. The good thing is that the tonearm pipes are exchangeable/removable.
 
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