My HSU sub has double ports and comes with a foam plug. The sub can be used 2 ways.
Maximum extension and Maximum output. There is also a backpanel switch which should match the plug configuration.
If the plug is to be installed for shipping, it may be to limit woofer cone movement and possibility for damage? Unless it's open box, I can't imagine anything crawling in there!
Maximum extension and Maximum output. There is also a backpanel switch which should match the plug configuration.
If the plug is to be installed for shipping, it may be to limit woofer cone movement and possibility for damage? Unless it's open box, I can't imagine anything crawling in there!