Just with a shorter coil. Sundown Audio has decided to "revive" the SD-2 with several updates to reduce distortion, increase airflow around the coil, and increase long-term reliability (motor bolted together, aluminum cap bolted on, shorting ring added to magnet ID, spider bolted down, bigger leads, etc) by introducing a new "SLD" lineup. In order to maintain an inventory of 100%, Brand New, A-Stock, untouched products, all sales are final. We ask that you please be sure you are ordering the correct product.
This item is in the category "Consumer Electronics\Vehicle Electronics & GPS\Car Audio\Car Subwoofers". The seller is "woofersetc_outlet" and is located in this country: US. This item can be shipped worldwide.