Adamson SX sub

I bought 2 ksub early September and I had the opportunity to use the NEXO LS500 for many years and the Special features that I like is the roundness of its precision and low noise it is mounted on casters and for transportation is the easier it is easy to use and its look is confused in any provision regarding the minimum was listening to some music at the sub the sound is rather mediocre the its lagging a bit but nothing serious to the extent by most of music is well below enregistees and is not always present the value for money is very correct and I REFERRED that choice a few pounds less it'll have been great has bintot