Could do the same with any speakers. But most speakers are so bad that you would need to do more than a bit of felt to fix 'em.
Focal Tweaks
If you own Focals I encourage you to try two things which worked for me:
I. Put a PSA felt ring around the tweeter. You can buy premade from Maddisound, or buy PSA felt sheets, and stamp a perfect hole out of them with a hobby stamper.
II. Replace the film caps with Mundorf MKP or Clarity CSA caps. Wait 72 hours for the MKPs to settle in.
Best,
E
I. Put a PSA felt ring around the tweeter. You can buy premade from Maddisound, or buy PSA felt sheets, and stamp a perfect hole out of them with a hobby stamper.
II. Replace the film caps with Mundorf MKP or Clarity CSA caps. Wait 72 hours for the MKPs to settle in.
Best,
E