I am new to all this, but reading forth and back on this forum, I can read many places, that adjusting Tracking bias and Focus bias usually end up somewhere around the point where the two coils stay silent.
My question is this: How silent is silent?
Is that dead silent or is it a point where they go from loud and clearly audible, to a far suppressed noise? Is it a level where they give a very damped little sound if one put's ones ear to them? Or something else?
I am not speaking about the adjustment itself as a read out on an oscilloscope.
I am very interested in hearing about this.
More specifically, the lasers in question are Sony KSS-140 and KSS-151a, but also on a more general level.
Kind regards,
Jacques
My question is this: How silent is silent?
Is that dead silent or is it a point where they go from loud and clearly audible, to a far suppressed noise? Is it a level where they give a very damped little sound if one put's ones ear to them? Or something else?
I am not speaking about the adjustment itself as a read out on an oscilloscope.
I am very interested in hearing about this.
More specifically, the lasers in question are Sony KSS-140 and KSS-151a, but also on a more general level.
Kind regards,
Jacques
Last edited:
In my case I own 4 philips players mounting cdm4/19 and focus coil noise vary between them.
At the same time I’m writting, I’m hearing an opera CD that has too many low volume passages. In that passages I can hear the focus coil as a repetitive sound: tac tac tac tac tac tac.
If I change to other player mounting same cdm, I can hear the same noise but lower level.
All 4 players are well adjusted (Laser and Focus) so the difference in the coil noise must obey to other causes.
At the same time I’m writting, I’m hearing an opera CD that has too many low volume passages. In that passages I can hear the focus coil as a repetitive sound: tac tac tac tac tac tac.
If I change to other player mounting same cdm, I can hear the same noise but lower level.
All 4 players are well adjusted (Laser and Focus) so the difference in the coil noise must obey to other causes.