NEED HELP-I THINK!!

[feisty]

Purchased VTF-2 MK-2 awhile ago. Sub works great!!
However, lately, shortly after it powers up-a minute or two later-it rumbles for a short period of time. Like a gurgling sound. Then the noise goes away and the sub works fine! No humming or hissing. Anybody know what I am experiencing? Should I be concerned? Does anybody know how to eliminate this noise?

Just knowing it's there is the most annoying thing. Tech. Support does not have the foggiest idea as to what is going on. Thanks in advance for whatever help you guys can give me. :confused::confused::confused::confused:

[thsmith]

I would call and speak to Pete, I have found HSU's tech support to be top knotch.

May be a problem with your receiver, try a different receiver if you can get you hands on one.

Purchased VTF-2 MK-2 awhile ago. Sub works great!!
However, lately, shortly after it powers up-a minute or two later-it rumbles for a short period of time. Like a gurgling sound. Then the noise goes away and the sub works fine! No humming or hissing. Anybody know what I am experiencing? Should I be concerned? Does anybody know how to eliminate this noise?

Just knowing it's there is the most annoying thing. Tech. Support does not have the foggiest idea as to what is going on. Thanks in advance for whatever help you guys can give me. :confused::confused::confused::confused: