Want to remove grille from Soundbar but scared!


Hello,
 I have F&D T-180x soundbar (https//www.fendaaudio.com/t180x.html) connected to t.v via aux cable, it's been working fine but from a month ago I noticed very "disturbing shaking sound during high bass/frequency". I then opened it up and tested on laptop as much as I could,and it sounded good, I closed it & attached it again with tv, but after couple of days it again started to give disturbing noise with high frequencies ☹️ I now tried to remove its grille to check if it solves the issue and yes it did!! Soundbar is sounding even much better without grille. But I also came to know that Removing speaker's grille will shorten its life due to sensitive drivers exposed to dust? Please help! I don't know what to do!!! 😥

Thanx. 
mickey22
Thank you all for your response! I really got some helpful tips here.
 
@ebm can you plz explain how it can be bad.
@fuzztone  I'm gonna try changing cable first and give update, although i have tried using optical cable instead of RCA but still had same issue of shaking bass/frequency & with that removing "grille" was the only option which solved the issue, but i will check by replacing RCA now 😀

I appreciate all these valuable responses which cleared some of my misconception! I love this forum!
Thanx!
Hello,
I think the bigger issue is why it was making noise. I guess you figured out it’s the grill. Fix the grill. If it’s one of those metal perforated grills it was probably vibrating in the crease. Buy sone blue tack or white tack and mush it in the crease all the way around. Push the grill back in. The white Tack will act like an isolation gasket. https://www.walmart.com/ip/Blu-Tack-Reusable-Adhesive-75g/402831173
You will find this on Amazon too. It also works to tack down those light electrical items like small DACs and phono stages. I hope this helped you and anyone else in this predicament. 
@hshifi
Yes speaker is somehow affecting & making grille vibrate ,it wasn't like this before i opened the soundbar first time, it happened all of a sudden, may be too much bass/frequency affected grille's balance, and kept increasing, i tested soundbar before with bluetooth & that awful vibration is still there,its not the cable ,its this plastic grille frame which is the issue. Thank you for "White tack" idea! 👍

Thanx!