Alpine SPR-57LS 300 Watts Component Speakers 5 x 7 or 6 x 8

[Type R Woofer]
• Wave Guide
• Aluminium Die Cast Frame
• 40 mm Diameter Voice Coil
• Butyl Rubber Edge
• Multi-Layer Cone
• Linear Drive Magnet

[Type R Power Specification]
• Weight 2.3 kg (one piece)
• Mounting Diameter 181 x 125 mm
• Power Handling Capacity (Peak) 300W
• Power Handling Capacity (RMS) 60W
• Mounting Depth 69.5 mm
• Sensitivity 87 dB/W (1m)
• Frequency Response 35Hz-30kHz
• Impedance (Nominal) 4 ohms

[Type R Tweeter]
• Surface & Flush Mounting Ready
• Back Cabinet Construction
• Swivel Tweeter
• 25 mm "ULFC" Soft Dome Tweeter
• Neodymium Magnet

[Type R Others]
• 6 Tweeter Level Adjustment
• 6" x 8" Adaptor