20 Sundown X Series 6 5 s On 2 Rockford Fosgate T2500 1bdcp StrappedRockford fosgate t2500-1bdcp power series mono sub amp 2,500 watts rms x 1 dynamic thermal management cooling system. Variable bass boost (0-18 dB at 45 Hz). The seller is powercarstereo1 and is located in Everett, Washington. This item is in the category Consumer Electronics\Vehicle Electronics & GPS\Car Audio\Car Amplifiers.