SB Acoustics SB17CRC35-4 Carbon Fibre Midwoofer

The SB Acoustics SB17CRC35-4 is a 6 inch 4 ohm midwoofer drive unit featuring a composite woven Carbon fibre / Rohacell® sandwich cone; this space age material has a superb stiffness to weight ratio with high internal damping.

Also available in 8 ohms: SB17CRC35-8

Key Features:

• Rohacell®/Carbon fibre sandwich cone for optimised stiffness/damping ratio
  
• Vented cast aluminum chassis for optimum strength and low compression
  
• Low damping rubber surround for improved transient response
  
• Non-conducting fibre glass voice coil former for minimum damping
  
• Extended copper sleeve on pole piece for low inductance and low distortion
  
• CCAW voice coil for reduced moving mass
• Vented pole piece for reduced compression
• Long life silver lead wires.

Basic parameters:

Here's the full datasheet: