About the Alpine SPS-M601 High tide, high volume An afternoon out on the water is a pretty great thing already, but it's even better when you add great sound. Alpine designed their SPS-M601 marine speakers to look good, sound good, and stand up to conditions that would turn lesser speakers into paperweights. Alpine built these speakers to handle plenty of power, so they'll cut right through the wind, waves, and motor noise to give you the high fidelity you want. The super-stiff 6-1/2" poly woofers and titanium tweeters deliver accurate reproduction with impressive high-frequency details. These IPx5 water-resistant speakers feature sleek, UV-resistant grilles and specially treated surrounds. They're tested tough against salt, fog, and blazing sunlight, so they'll sound great for seasons to come. Product highlights: white 6-1/2" 2-way marine speakers (pair) poly woofers with weather-resistant surrounds 7/8" titanium/PEI balanced-dome tweeters UV-resistant grilles and high-temperature ABS custom frames power range: 2-35 watts RMS (110 watts peak power) frequency response: 60-22,000 Hz sensitivity: 89 dB impedance: 4 ohms cutout diameter: 5" frame diameter: 6.65" mounting depth: 2.53" warranty: 1 year MFR # SPS-M601 Item # 500SPS601 California customers: Please click here for your Proposition 65 WARNING. What's in the box: If you need assistance accessing this owner's manual, please give us a call. Two 2-way marine speakers 2 Grilles Two 10' Lengths of speaker wire (each has female quick-slides on one end and bare wire on the other) Eight 1-1/8" Stainless steel mounting screws 8 Speed clips Cutout template (on box) On-line product registration information Warranty information Specifications and instructions on box Features & specs General Speaker Size 6 1/2 Design 2-way Tweeter Design 7/8" Balanced Dome Tweeter Composition Titanium/PEI Woofer Composition Poly Woofer Surround Coated Fabric Parts Warranty 1 Year Labor Warranty 1 Year Specifications Sensitivity 89 dB at 1 watt Frequency Response 50 - 20k Hz Max RMS Power Handling 35 Peak Power Handling (Watts) 110 Impedance (Ohms) 4 Top-mount Depth (Inches) 2 9/16 Bottom-mount Depth (Inches) N/A Cutout Diameter or Length (inches) 5 1/16 Bolt Circle 6.151 The Alpine SPS-M601 replaces these items: Alpine SPS-M600 Features Channel: A channel in the flange and the grille allow any water splashed on the front of the speaker to drain away. Speaker Size: Because the grilles are removable, the SPS-M601 fits many car/truck applications. As the size applies to car installations, they are both 6-1/2 and 6-3/4 speakers. The 5" cutout required matches the 6-1/2 standard, but the 6.652" frame diameter is bigger than most 6-3/4 models. There are two sets of screw holes in the flange, one matching the 6-3/4 standard, the other a symmetrical four hole 6-1/2 pattern. If these speakers are to be installed in a car or truck, please enter your vehicle information to confirm fit. (If installed in a 6-1/2 application, it is likely that new screw holes will need to be drilled in the vehicle.)