Authorized Rockville Dealer! 

Video of MS525B:

 

What's In the Box:

• 2 Speakers
• Installation Hardware: (8 Stainless Steel Screws + 8 Stainless Steel  Speed Clips)
• Mounting Template
• Owner's Manual
• Warranty Card

Features:

• Pair Rockville MS525B 5.25" 400 Watt Waterproof Marine Boat Speakers 2-Way White
  
• Peak Power: 400 Watts per pair / 200 Watts each
  
• RMS Power: 200 Watts per pair / 100 Watts each
  
• Injection Molded Polypropylene Cone
  
• Aluminum voice coil with ASV winding
  
• Cloth surrounds
  
• Impedance: 4 Ohm
  
• Frequency Response: 110Hz – 20 Khz
  
• Sensitivity:87dB @1w/1m
  
• High quality magnet: 6 Oz Y30 Ferrite magnet
  
• 1” inch ASV voice coil
  
• IP56 waterproof
  
• Fully Marinized Against Salt & Fresh Water Conditions
  
• Completely Waterproof and rustproof at level IP56
  
• Anti-UV molded ABS plastic basket & grill
  
• Pre-installed mounting screws included
  
• Perfect for marine, outdoor, and car use
  
• 1” inch Tweeter: (PEI Diaphragm with NdFeB magnet)
  
• Injection Molded Polypropylene Dust Cap
  
• SPL: 87dB  ±  2dB (at  1M / 1W)
  
• Resonant Frequency (F0) 120Hz + or – 20% at 1V
  
• 3MM plate and 3 MM T-yoke
  
• Total Diameter: 5.79”
  
• Cutout Diameter in Inches for Mounting: 5.31”
  
• Total Height: 2.56”
  
• Mounting Depth in inches:1.85’’
  
• Shipping weight: 2.42 Lbs
  
• Shipping Dimensions:6” x 6” x 5.7” 

T/S Parameters:

• Magnet weight in OZ:6 OZ
  
• Magnet details:Φ70*Φ32*10
  
• Fs:142 Hz
  
• Re:3.2 ohms
  
• Qes:2.08
  
• Qts:1.3
  
• Qms:3.467
  
• Vas:1.712L
  
• Cms:195.49UM/N
  
• Bl:2.967
  
• MMS:6.4g
  
• XMAX:1.5 mm
  
• SD:78.54 cm²
  

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About Rockville Quality Control Procedures:
The Rockville brand stands for Quality, Innovation and Value. All Rockville products go through the most rigorous quality control standards in the industry. Products go through months of extensive testing before they reach your hands. All user functions are tested and all internal components are tested for quality. Rockville makes products that are virtually un-breakable! Rockville is one of the only brands in its class to test every concept model for weeks or months before starting production. Once production begins, Rockville sends product engineers to their factory to quality control every line of production. During production every product is tested and on top of that Rockville goes the extra mile and has their high level product engineers do an additional quality control. They test a certain percentage of all products from the production line a second time to ensure that the quality meets their vigorous standards, and to make sure that there is never a batch of products with even a slight problem. All Rockville products are backed with a hassle free warranty, though it is unlikely that you will need to use it.