Ribbon Tweeters and Animal Hair

Always keep pets away from delicate gear. A good blast with pressurized air for cleaning on occasion sounds like a good idea to me.  👍

@oldhvymecI have the sierra towers with the raal ribbons. It's my first pair of ribbons so I can't compare. They are different from the ones on the sierra 2s. Aleksander Raal built the ones for the towers solely for David Fabrikant, owner of Ascend acoustics. You may want to pay them attention, they are everything I ever wanted in sound, uber clarity yet not harsh, lifelike sounding of anything high trebles.

My cat  doesnot go near the speaker , sonicly your music always sounds better without a grill , just put the grill on after your done
listening , some people take a bit of Ammonia on a piece of paper near the speaker ,they don’t like that.

It depends on room acoustics. I used to like them better without the grills off in my old room, but now in my new house of stereo room, with plenty of diffusers, they sound more natural with the grills on.