thanx for both of you i was actually refering the one slot screw
when i fastened up tight sound became really solid so i loosened a bit then sound became smooth.
i found that the transportation philips screw and plastic plate which secure midrange during transportation has a paper between them which says remove after transportation is done and the hint is that paper is bent a little bit
so the correct factory setting is one slotted screw should be protrude a little bit out from aluminium surrounding at which just a finger tight yension can be feeled
that is my conclusions
anyone who has exact numerical tension paramer please give me some help
when i fastened up tight sound became really solid so i loosened a bit then sound became smooth.
i found that the transportation philips screw and plastic plate which secure midrange during transportation has a paper between them which says remove after transportation is done and the hint is that paper is bent a little bit
so the correct factory setting is one slotted screw should be protrude a little bit out from aluminium surrounding at which just a finger tight yension can be feeled
that is my conclusions
anyone who has exact numerical tension paramer please give me some help