spg1986 wrote:Thanks for the replies.
In answer to where the problem had originated, I managed to break the stylus on the factory fitted cart, which I believe was an Audio Technica one? I hadn't got a clue what I'd done (as I say, relatively new to this stuff) so I took it into the repair shop. Given the option of new Ortofon cart or replaced stylus. As the Ortofon would be the quicker turnaround in terms of getting the part, and as it was supposedly an upgrade I went with it. Obviously the guy didn't really know what he was doing as when it was returned the cart was knocking on the vinyl. This issue's been resolved now by fitting the 2MM spacer, but it's the sound quality which is poor.
I know the obvious thing to do would have been to take it back to the shop, but I'd rather the guy kept his hands off it now. Plus if I can fix it myself then I know for future reference.
I've adjusted the bias and it doesn't really seem to improve matters unfortunately...
The tracking force is set correctly and it appears as if it's on straight based on the protractor but the amount of crackle and occasional popping, rustling etc. definitely doesn't seem right to me.
I should say also that the problem is more pronounced on heavier vinyl - 180/200G - it's happening on both older records of mine and also brand new copies. I've currently got the tracking force set at 1.5 - so right at the lightest end of the manufacturer's suggested range, reluctant to try and lighter as I've heard it can damage the vinyl?
I'm beginning to think the initial poor setup has damaged the stylus or cartridge maybe, reckon that might be a possibility?
And thanks a lot for your help again.
I have an OM5 and a couple of OM10's, the OMB10 and the Super10, although the latter two sound exactly the same to me but I digress. I have experimented a lot with VTA and whether toenarms should be level with the platter, and generally a large number of carts sound best when the toneram's level. But in the case of the OM5 and the OM10's, I think they need to be slightly tail up because they sure pick up a whole lot more of surface noise when they're exactly level or tail down. Note that I said 'more' as sadly it's well known fact that the OM5 and the OM10 highlight surface noise much more than other carts do.
While I can't say whether your stylus is defective or not, I definitely believe you're not getting the best out of your cart as I think you should have gone for at least a 4mm spacer for this cart. I also think that's the reason why thicker records are sounding worse than the thinner ones.