About Us
  Seismic™ Series
 
  High-Excursion Bass Driver
  High-Pressure Die-Cast Aluminum Chassis  
  Controls flexing and ringing, and since aluminum is non-magnetic, stray magnetic losses are eliminated.  
  AVS™ Airflow Ventilation Cooling System and Huge Heatsink Fins  
  AVS™ Airflow Ventilation Cooling System and Huge Heatsink Fins provide forced air cooling during extended cone excursion and convection cooling at all other times.  
  Mineral-Filled Co-Polymer Polypropylene Cones with RCR™ Resonance Control Ribs  
  Both sides of the cone are ribbed, providing superior stiffness with low mass and excellent internal damping for tremendous freedom from unwanted resonances and distortion.  
  Dual Spiders and Dual Ultra-Long-Travel Suspensions  
  One progressive and one linear, promote greater cone excursion while maintaining exacting control over cone movement.  
  Dual Balanced-Plane High-Velocity Passive Radiators  
  Dual Balanced-Plane High-Velocity Passive Radiators provide extended bass response with very low distortion. Solid, stable enclosures, unhampered by vibrations or resonances, contribute to the clean and articulate bass performance.  
  Oversize 4+4-Layer High-Temperature Aluminum-Wire Voice Coil  
  Wound on a high-temperature Apical™ former, with advanced high-temperature coating and twin-layer bifilar configuration for greater stability and support during extended cone excursion.  
  Proprietary Voice Coil Wire Guide  
  Proprietary Voice Coil Wire Guide allows large-gauge wire connection directly to the voice coil for unrestricted cone movement while eliminating the possibility of "cone slapping" of lead-in wires in this high-excursion application. Unique rigid wire guide cap stiffens the cone/voice coil interface.  
  Massive Computer-Optimized Magnet Structures with Focused Field Geometry  
  13-kg (29 lb) magnet structure on the Seismic™ 12 and 8.5-kg (19 lb) on the Seismic™ 10 generate an enormous magnetic force field while minimizing inductance distortion.  
  Massive Extruded-Aluminum Vented Center Heatsink  
  Massive Extruded-Aluminum Vented Center Heatsink provides internal forced-air cooling to drive heat away from the high-velocity low-turbulence pole piece, thereby increasing power handling and reducing distortion.  
 
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