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Alpine SPR-57LS
The all new 2005 Type-R speakers are all about better sound performance! All Type-R speakers feature a multi layer cone, for maximum strength, powerful bass and superior musical detail. True linear movement allows for a more accurate musical reproduction and deeper bass and better handling for higher volume levels. The SPR-57LS features a swivel tweeter which can be aimed to improve response for better sound imaging. A premium crossover network ensures superb conrol between the tweeter and woofer. The Wave Guide focuses sound waves for less distortion, creating a smoother midrange for better blending. 300W Peak Power 60W RMS Frequency Response: 35Hz – 30kHz Multi-Layered Hybrid Fiber Cone Wave Guide Linear Drive Magnet Motor Structure Lightweight Rubber Surround Custom Aluminum Woofer Frame 1" Soft Dome Tweeter with Tuned Back-Chamber External Crossover with 6-StepTweeter Level Adjusment Tweeter 1" Soft Dome Tweeter Feather Light Silk Dome Tweeter Flush & Surface (W/swivel) Mounting Kits Neodymium Magnet Woofer Wave Guide General-Speakers Crossover Attenuation Level : 0db, -3dB, -6dB Crossover Size (in) : 2-9/16" x 4-3/4" x 1-3/8" (WxHxD) Crossover Size (mm) : 65mm x 120mm x 35mm (WxHxD) Frequency Response : 35Hz - 30kHz Impedance (Nominal) : 4 ohm Sensitivity : 85 dB/W/m Woofer Mounting Depth (in) : 2-3/4 Woofer Mounting Depth (mm) : 69.9mm Woofer Mounting Diameter (in) : 5" x 7-1/4" Woofer Mounting Diameter (mm) : 127mm x 184.2mm Power Handling Capacity (Peak) : 300W Power Handling Capacity (RMS) : 60W External 12dBHP/6dBLP Crossover with Tweeter Protection and Level Adjustment
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