I have some sl3 and I washed them and it did seem to improve the sound . You have to learn which way the rails come off. And very lightlywarm water have to be carefully not high pressure and which a shower is not. Have to be careful where the wire attaches to the panel . If I remember it’s...
My SL3 I just washed awesome they look and sound nice . On my second speaker after washing and drying 24 hrs i plugged in got some popping with no sound awesome ! so I took the speaker panel back off discovered the black grounded wire on the stator is off . I tried to touch solder it on ...