[quote name='SounDrive']The X and Zv4 are inefficient subs due to the heavy moving mass. I personally don't like how they sound either. I like Sundown's products, but not the X and Zv4.
An ICON/XCON/ZCON would be more efficient and probably sound better too. The XCON is the most SQ oriented of the group with a shorting ring and also probably the most well suited for your power, followed by the smaller icon, and then there's the ZCON which is a SPL monster with tons of motor force that still has the potential to sound great. I've heard many SSA setups and never been disappointed with any of them, and their customer service is also amazing.[/QUOTE]
It did seem like it took a lot of power to get moving.
[quote name='jordon']This is where I keep getting mixed reviews.[/QUOTE]
If you have the money, I would recommend getting @NoLoud4U; 's DD's