Hi Debbie,
I have had a strange "buzz" in one of my DSR's for some time ... only at a certain frequency, and only at high volume. It was very infrequent, and I was going to just wait until the warranty was out and find out what was rattling and fix it.
The end of last year, I decided to try to get it into warranty and have them do it .... even though the closest warranty repair center for me is about 1 hour drive each way.
After a couple of weeks in the shop ..... yep. "Nothin wrong with the speaker".
Another 1 hour trip to the store, I bring in the other DSR for comparison, another 2 weeks ..... yep. "Nothin wrong with the speaker".
Frustrated, I fall back to my original plan and take the speakers home.
A couple of weeks ago, I was plunking around on my guitar and found a 100% sure fire way to get it to buzz. This was both a relief, and a concern to me, so .... back to the store (a different one this time). I show the tech the problem with my phone and a cable hooked to the speaker. 2 weeks later I get "Nothing wrong with the internals of the speaker, adjusted the metal grill and the speaker is ready to pick up".
Last night I drove out again (this makes 4 one hour drives in both directions for me for a total of 8 hours on the road for this stupid issue) and bring my phone and cord to verify the problem is fixed..... NOPE. Buzzes at exactly the same frequency and volume.
Fortunately, the techs (3 them all jumped in) all got on this immediately. After 15 min, pressing around on the speaker, fiddling around with it in various ways, and then finally removing the speaker from the box and running the test again, it was determined that it was actually the woofer that was making the noise (not a rattle in the cabinet). They ordered a new driver for me under warranty (which runs out next month!).
So the moral of my story is that it was a giant PITA to get this fixed. I had thought it was something minor, but it wasn't. It was worth my effort (if only barely) to get it fixed (I think).
It may be that the speaker would have continued to work (longer than I will anyway) without getting worse. It was only an intermittent and infrequent buzz that wasn't really that loud (certainly not enough to be heard over the other speaker and subs at volume). It could have become much worse though, and the root cause is the $400 woofer in the speaker.
In all honesty, if someone gave me the choice of paying $400 or driving a total of 10 hours and leaving work early on several occasions to get to the shop while a tech was present ... I may have well just replaced the silly thing on my own dime!
My situation is much different than yours Debbie. I could have continued to use my speaker with no real issue. The buzz was rare, only at very high volume, and only at a very specific frequency.
My problem with the experience was the lengths I had to go to in order to get the problem fixed. I don't know that there was any other path for me really. It was just a particularly difficult to reproduce major issue disguised as a cabinet rattle.
Once I spent the time to create a test that reproduced the problem 100% of the time, I FINALLY got things fixed.
I thought I would share my experience in this thread just in case anyone else has a seemingly harmless "cabinet rattle" they are living with. Might want to get this looked at while still in warranty