Thanks Fihart. Is bathroom silicon sealant the same as Silicon RTV? Like the kind that come in a squirty gun?
I'd appreciate any ideas on what the specific product is that I could use.
The ideal sealant is called frost king mortite caulk rope. It is sold at hardware stores to seal weatherstrips, doors, windows.http://www.amazon.com
/Frost-B2-Mortite-Caulking-19-ounce /dp/B000LNODSQ/ref=cm_cr_pr_product_top /182-7823109-4059224
it is installed between the back of the speaker and the cabinet. It does not dry, and allows pulling the speaker out later on, if serviced.
Mortite is putty in rope form, and is ideal for gaskets on speaker cabinets, especially sub woofers.