Hartke 4x10 speaker issue

[Cary713]

Ok, I'm running a Behringer BX3000t head (*please hold the bashing comments*) through a Hartke 4x10XL cab, and when I turn it up about halfway, or use the Deep Bass button, the top right speaker rattles. (There is no obvious separation or damage)

I'm pretty sure it's not a mounting issue, because when I pulled the grill and push in slightly on the bottom of the cone I hear it more, but not when I push in on the top of the cone. And it doesn't do this on any of the other speakers.
My question is: Do I need to have it re-coned or would it be easier/cheaper to replace the speaker?
Could this be caused by it being used/stressed and have no obvious damage?

 

[jaywa]

I'm going to guess this is another occurrence of the infamous Harkte "dust cap" issue. but will let someone more qualified than myself confirm and elaborate on that here. I have a Hartke 210 cab from the mid-90s doing the same thing and suspect it is a dust cap but haven't gotten around to having it checked out yet.

 

[Cary713]

The seal looks good all the way around the dust cap, AFAICT. When I push in slightly on the cone it makes a sound like rubbing paper together.
I'm wondering if this could be the voice coil...?

 

[Dogbertday]

call larry hartke... his phone number is public... he put it on the back of Bass Player Mag

1-201-608-8153

 

[Rick Auricchio]

That speaker is bad if it rubs. It will fail soon.