Alpine SWR-1243D 12" 4Ohm 1800W Type R Subwoofer

New and Improved Alpine Type-R:
Delivering the best bass output, the Alpine SWR-1243D has been redesigned to enhance audio playback and become your ideal sound system. Type-R's new depth design offers a 20% reduction while adding the new and improved magnet structure. With this updated double-stacked strontium magnet, this product gains over 20% more motor force to provide a louder, cleaner bass. The optimized CRC machined motor creates an even magnetic field to provide the user with less distortion and overall improves the subwoofers power handling. This subwoofer features a High-Amplitude Multi Roll (HAMR) to provide excellent excursion with overall better output. Having a new and improved airflow management system controlling the temperature of the voice coils, the air is redirected across the heatsink to avoid overheating. With heavy playing time, this heatsink feature minimizes the amount of compression to reduce any heat damage to the voice coils giving you a long-lasting subwoofer.

• 12" Dual 4 ohm Type R Subwoofer
  
• Power Handling:
  
  
  
  • Peak: 1800 watts
    
  • RMS: 300-600 watts
    
  
  
• Kevlar reinforced pulp cone woofer
  
• 2-Piece Structural Parabolic diaphragm design
  
• Injection molded Santoprene rubber surround
  
• Alpine exclusive High Amplitude Multi-Roll (H.A.M.R) surround for impressive excusrion and clean, accurate bass
  
• FEA Optimized progressive NOMEX spider
  
• Radial vented VC head sink
  
• Concealed mount gasket system
  
• Reinforced layer spider integration tinsel leads
  
• Oversized 2-1/2" Voice coil
  
• 4-Layer dual voice coil design
  
• Voice coil made from 180°C high temperature wire on spiral cut aluminum former
  
• Single-piece cast aluminum frame with Alpine Patent Pending Airflow Management System for efficient cooling
  
• Airflow Management system controls the temperature of the voice coil by directing the air across the heatsink
  
• One sided push terminals make installation and wiring fast and simple
  
• Each terminal accepts up to 8 AWG wire for high power signal transfer
  
• Concealed gasket mounting system hides the screw holes and makes for a clean install
  
• Integrated grill technology allows for a seamless installation of a grill
  
• US Patented Compound Radius Curve (CRC) design with integrated short sleeve configuration
  
• CRC Machined motor structure creates a symmetrical magnetic field for less distortion and improves power handling
  
• High-power, double-stacked strontium magnet structure
  
• Newly redesigned for a 20% depth reduction
  
• Frequency response: 24-200 Hz
  
• Sensitivity: 83 dB