The Flagship CSW SW-218 is a Double 18”, passive true subwoofer.
Built with rugged ¾” 13 ply Russian birch and finished with the
most rugged truck bed liner available Line-X. This earth
shattering double 18 will outperform current similar products at
least two to one & naturally inherits a cardioid pattern of -12dB
at the rear. (RHR) Rear Hemisphere Rejection.
Our Maximum SPL has measured 140dB continuous and 150dB Peak. Each
CSW Black Box is housed with 2 18A drivers is with Lead Release
Technology (LRT). The LRT will not allow the 18-A driver to exceed