What's this pick-up cable?

[Carosio]

I've not had chance to do the "iron test" yet, although I think the cable quality is good, and due to it being flexible its ideal for suspended decks which it will be used for.

This is the third RB I have had, the first would not balance out, it was either pointing up or down, so I got rid. The next (standard RB250) is like new and floats perfectly at horizontal, but this one is presenting problems. It sets to horizontal balance reasonably well, but I cannot set the bias (usually on a blank portion of the disc) as even on the minimum setting it will pull towards the outside. When the arm is at balance and I gently tap it towards the spindle, it resists strongly so I can only think that the bias system is not cancelling or there is too much lead torque? Also I have noted that just inside the arm tube where the leads emerge there is some kind of filler, a sort of elastic stuff the colour of putty, whether this extends up the arm tube I am not sure.

[colin.hepburn]

Your Best bet is to email J7 i.e. John as some of us have said he’s a top man what he doesn’t know about the rega RB250 isn’t worth knowing he is a great bloke he will help you sort it out
http://www.audioorigami.co.uk/QuotePage.htm
He is also a hi if world award winner for his very own pu7 arms

[Greg.]

If you want to get the best out of a Rega RB250, I'd have a look here.

http://www.audiomods.co.uk/

Certainly the biasing is properly sorted out amongst many other things including decent bearings that'll sort arm balancing. The original magnetic bias system is rubbish IMHO.

[Carosio]

Thanks for the advice to have the arm professionally upgraded, although I have re-wired arms in the past, in fact I have used one of the thinnest wires available and was used on the Connoisseur SAU 2.

Having had a closer look at the internal wiring on this RB300, I think it is excessively thick and I'm sure is degrading its performance. It also has a 5 pin DIN socket which is handy but not sure whether that is standard or not.