Technical specs and contents:

• 1 pr 6.8” Enhanced Mid-Bass Subwoofer
• Frequency response 10Hz-4000Hz
• Power handling: 300Watt Pk.
• Impedance 4 Ohm
• Sensitivity: 84dB
• Mounting depth: 3.0”
• Cast frame: OD 6.8”
• Cone: Mid/Kevlar/Fiber glass
• Magnet weight: 30 Oz
• Cone surround Buytal rubber
• Impedance: 4Ohm
• Voice coil: 38mm
• Fs: 39Hz