I'm putting Purifi PTT6.5x04 midranges in the kick panel area to improve soundstage and imaging. They are aperiodic enclosures that use the airspace in the sill panel as a secondary enclosure to improve lower freq accuracy.
I used trailer light housings to compress the membrane between the enclosures.
I had dye mixed to match the interior to give these tumors an OEM look.
I'm really looking forward to finishing fabrication and tuning. Hopefully before the next trip to NC.