Ten years ago if someone had told me that I would be writing a review on what I consider one of the most phenomenal Sub-Woofers ever built & that before having the chance to write about it I would be Listening to it in my daily driver for over three months I would of told them they were crazy!

This Sub-Woofer is the Digital Designs DD-Z18-D1.5 

The sound quality of the Z18 is just absolutely beautiful that no array of words could ever do it justice!

I have owned 18″ Sub-Woofers in the past, they have always been slow moving and have never been good for sound quality. The Z18 on the other hand moves extremely fast and the bass it produces is just breath taking (literally if turned up loud in the truck cabin) that I have found it hard to go back to having any other Sub-Woofer in the truck since.


  • Magnet Weight: 7 kilo-tones
  • Item: Z18
  • Nominal Impedance: various
  • Port Area (sq in): 104
  • Port Length (in): 19
  • Power Handling RMS/Peak: If you need to ask…
  • Rec Box (cubic ft): 6.5
  • Sensitivity: Emo
  • Series: Z
  • Shipping Weight: 60 lbs
  • Suspension Travel: Check
  • Voice Coil Diameter: 76.2mm
  • Woofer Diameter: 18″

Overall I have to say this is the most amazing sounding Sub-Woofer I have ever had the chance to hear let alone got the chance to use on a daily basis, as I stated before the Z18 is so beautiful sounding yet so brutal at high volumes that it has ruined me for any Sub-Woofer I will ever get to use or own after the Z18. Even though it is not fair to compare a Z18 to any other woofer out there I can’t help but do so now and somehow feel sorry for other Sub-Woofers that can’t perform to the same level of the Z18!