Ampeg Portaflex Series  4 x 10 Inches 800 Watt Bass Amplifier Cabinet,2043386 Rugged 15mm poplar ply enclosure 800W RMS power handling @ 8 ohms 4 x 10 Inch ceramic Eminence LF driver 1 Inch HF compression driver with L-Pad level control Shelf ported for additional low frequency extension