goingdef 10+ year member
CarAudio.com Veteran
So it's been a few days now since switching from a single RF T1 12" to the sundown ZV4 12" all on the same amp RF T1500.1BDCP and in the same enclosure 2.45^3 tuned to 33hz and this sub STOMPS every sub I've owned up until it including several T2's in numerous sizes 10"-15" and none have ever been as loud or dug as low as this monster and it's not even getting warm! If your thinking about one DO IT you won't regret it!