JL uses what they call a W cone on the W7, the whole cone is basically an inverted dustcap.
Best picture i could find in a quick image search but you should be able to get the gist of it.
'07 Ranger Sport|Ext.Cab|3.slow|Mechman Elite 250|NSB Group 65(x3)
iPhone 6+ side slider|HRT iStreamer|AudioControl Matrix+ & EQS
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