Vehicle Type: automobiles
Modification Type: Audio
Modification Name: RFB4121
Manufacturer: Rockford Fosgate
Used Most Often In: Volkswagen Jetta
How it was Used: The Monsoon sounds decent but it just didn't have enough range so I upgraded the headunit to a Kenwood KDC-MP922 and added a Rockford Fosgate RFB4121 enclosure factory packed with a 12" HE Series Subwoofer. It is being pumped by a Rockford Fosgate 301S 900 watt peak/200 watt RMS amp.
Price Paid: $450