SB Acoustics SB42FHCL75-6 Honeycomb Subwoofer

The SB42FHCL75-6 from SB Acoustics is a 15 inch 6 ohm subwoofer featuring a lightweight but extremely rigid honeycomb / sandwich diaphragm comprised of a hard paper honeycomb core with glass fibre skins; this unique cone composition offers an extended pistonic action and an unusually flat frequency response. If you are looking for a high output, low distortion sub-bass unit this driver should be on your shortlist.

Key Features:

• Light weight rigid honeycomb cone (hard paper honeycomb with fibre glass skins).
  
• 3″ copper voice coil for improved power handling.
• Long life silver lead wires.
• 3"copper voice coil.
• Vented pole piece for minimum compression.
• Vented cast aluminum chassis for optimum strength and low compression.
• Low damping rubber surround for improved dynamic linearity.
• Non-conducting fiber glass voice coil former for minimum damping.
• Large motor system.

Basic parameters:

Here's the full datasheet: