I have a JL Audio system that I took out of my last Explorer...HD900/5 Amp, C5-650 Series 6 1/2" Components (Fronts), C5-650x Coaxes (Rear), TW3 Series 10TW3-D4 shallow-mount subwoofer and a PAC-Audio AmpPRO Amplifier Interface. Hard to expect anything out of the B&O System after having this setup. Can't wait to get it into my ST.