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Discussion Starter #1
I dont know how quite old this stuff is, but I was given a Sony 7.1 Reciever STR-DE825 that I still need to get a remote for. I have a Mirage FRX-S8 sub.

The reciever has two outputs for subs. Both are black which I assume are both single outputs for a total of 2 subs. The sub has left and right inputs. Based on what i have read, I have connected to the Left input on the sub Using a coaxial audio cable. My problem is, the sub seems to sound great at times when it gets deep or loud, the air coming out of the duct seems rattly (if that's a word)

Nothing inside the sub rattles its just the air coming out. Its like it isnt coming out clean, and the only temporary fix i am using is shoving a shirt or sock inside the hole to clog it. I would prefer to leave it open. Any suggestions as to whats causing this ugly air ?
 
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