Some bits of my system are now getting a bit old and I have another problem.
For the record:
Roksan DP-1/DA-1/DS-4; The DP-1 was Attessa's the summer before last.
Naim: 72,Hi-Cap,140, NAT-01, IBLs Mk1
On certain CDs I get a quick series of 'clicks' which come from the tweeters. To make matters worse its only on certain tracks on certain CDs. It is NOT a part of the music (I'm not that stupid; I hope).
Does anyone have any suggestions / need any further info ?
ps.
I don't think Mana will fix it before anmyone suggests it 
Posted on: 31 October 2001 by MarkEJ
If the CD player is the cause, Roksan will be able to advise. They're very helpful, but you should speak to no-one but Touraj himself, as it is his baby, and the rest of them are very Caspian/Kandy oriented.
The adress I have for them is in Alperton, Mddx., tel: 0208-900-6801. Hope this is accurate!
Best;
Mark
(an imperfect
forum environment is
better than none)
Posted on: 31 October 2001 by Jez Quigley
As well as scratches and grease from finger marks, a badly copied CDR can click - are any of the offending CD's boots?
Posted on: 31 October 2001 by Manu
The clics you hear are due to unrecoverable reading error, missing samples.
Your laser lens can be dirty. Or if your transport is old, the laser can start to leave this world.
It can also be dirty CD.
Clean your lens, or make it clean by a specialist.
Clean your CDs, stop dropping jam on them.
If it is dying, it's an oportunity to buy a Naim CDP 
Emmanuel
Posted on: 01 November 2001 by Chris L
Another cause, which I heard and saw at a dealer not so long ago, is that the solver substrate in the disc can have very small holes in it - the precise position appears to determine whether a click can be heard or not.
Sometimes you can see them holding it up to a light, but the disc at my dealer required a microspope to see them properly.
Also, this appears to affect quality players much more than low end ones, mainly due to true hi-fidelity players using less error correction.
Just a thought,
Chris L
Posted on: 01 November 2001 by andrew mcmullins
I'll clean the lens and have a look at the disc. I doubt that it is the laser as its less than two years old (if it is I'll run it up to Roksan as the factory is only a few miles away).
I will also borrow one of the offending CDs from someone else to see if it just my copy. I'll let you know if I find anything interesting.
Thanks all.
Andrew
Posted on: 12 November 2001 by andrew mcmullins
The DP-1 is going to have to go back to the doctors' at Roksan. Please pray that it makes a speedy recovery !
