DS18 ZR212LD Bass Package 2 x ZR12.2 12" Subwoofers In a Ported Box 3200 Watts The ZR212LD provides dual 12 inch subwoofers loaded into a ported box for the listeners who like it loud! The ported box is tuned to 29 Hz and helps get the most from your subwoofers by delivering a deeper, punchier bass. Included in the ported box are two ZR12.4D subwoofers, one of our bestselling car audio subs, designed with dual 4-Ohms voice coils wired in parallel for a nominal impedance of 1-Ohm. This loaded sub
