Summary: big bass from a relatively small box. easy to follow instructions and the sound is pretty damn good for the price. it won't blow your windows out but it will transform your car stereo into something much louder with good bass. i have it installed in my jeep wrangler which is a big space to fill with sound so i reckon in a small car it will sound better again. i am thoroughly enjoying the music now. i would recommend one if you're on a small budget.
Summary: I just finished installing it today and have to admit I was surprised by the amount of bass this unit produces (and how much time a good install takes). It won't rattle any windows but it sure is capable of producing low frequencies and punchy bass. It complements my standard factory fitted 6 speaker system nicely (Kia Rio 3 2013). I like how little space it takes in the boot and weight wise it's not too heavy, I would say about 8kg. or so.
Summary: I choose this product because I didn't want to install another amp and because I needed a smaller SUB in my car. It has a good sound. Although its freq from 70 to 120 Hz, the Kick bass sounds pretty well. Only one word to add ---> JBL !
Summary: i've had one of these for nearly 3 years now, it has moved from car to car and has never faltered. it is easy to install yourself, a reasonable size so it doesnt take up your boot space, and it gives a very good quality base that is enough to make a big difference to your music but not so much that it rattles the trim off your car. it comes with a handy remote that can sit in the glovebox or somewhere in the front so it is easy to adjust volume of the bass.
Summary: Habe mir erst in mein Auto von JBL Lautsprecher eingebaut, die einen sehr guten klang haben. Es hat aber noch am Bass gemangelt. War mit den Lautsprechern sehr zufrieden, deswegen hab ich mir auch von der selben Marke den Bass bestellt. Der Bass macht ordentlich los obwohl er nicht gerade sehr groß ist, was ich gut finde da er nicht sehr viel Platz im Kofferraum nimmt. Ich kann ihn nur weiterempfehlen. Habe ihn in einen Opel Corsa C eingebaut.