ZCONS = I have 2 in my astro and when I was first tuned to 36hz in my box I did a 156.7 at 28hz and they sound AMAZING!!!!!!!! I would recommend the wall for sure tune it to 33hz IMO. Also dont exclude STETSOM! they are very fairly priced and sound amazing! I am currently running a stetsom5k2e at 2 ohms! its not for sale but for the right price it might be LOL I am thinking about running 4 and would need to buy a new amp! PM ME if interested in the amp do not respond on here as this is not a for sale thread I was just informing you! also you might want to check the store again that 4500 is not there oh and SSA FTMFW