The box is very low quality. The air tube came off on the first day, and that was the reason it was making noise

I will write strictly for those who want to buy it!
It was installed in a VW Golf 5 with 2 changed front speakers from Hertz and 2 more JBL speakers on the rear shelf with an amplifier! The Sub itself has an amplifier, that's why I chose it! It is the most VFM Sub you can get at this price, it simply doesn't exist, it is relatively small, it doesn't "eat up" much of your trunk space and you can adjust it to where you want, I set it a little above half, not because it was distorting but just because half, if not the whole car, was rattling at full volume!! Where I set it, I feel the boom in my stomach quite a bit, but not to the point where it gets on your nerves, it takes time but you will find the right spot for you! I should say I did the installation myself at home, it's easy but you need to have knowledge, if you DON'T know and have no idea, don't mess with electricity, it's best to go to a specialist!!! The cables are included in the package, I suggest you use them if you don't have a problem, but it's better to spend a little more money on wiring for peace of mind! I may sound exaggerated about its performance but it's really good for its price!! Of course, there are much better options and better brands but not at 50 euros with this performance!!!!! And finally, with a 10 amp fuse it will play at about 110 to 140w, with a 20 amp fuse 200 to 240w, which are the real numbers and not the 4800 or whatever it said on the package, which are just advertising numbers!!!

Guys, it's a very simple speaker, don't go for it if you think you'll see something good. I don't know if it's worth getting; better to spend double and get something good. Generally, I've noticed that in sound, it's not worth saving money anywhere. You buy branded to listen to your music like a human and they last for years.