This kit is pre-assembled and tested by a technician.
The S8 is LSK subwoofer, best suited to augment or extend the low frequency response of any LSK stereo speakers, but also not out of place in low to medium powered multi-channel home theatre systems. 
The S8 is a sealed box active subwoofer, in a very compact package - a 28cm cube. But don't let this small size fool you, the S8 sure packs a punch with 20mm of linear travel and 250W of clean RMS power!

The applications the S8 best suits are:
•    Subwoofer for stereo speakers for music listening
•    Home cinema subwoofer in a 5.1 or 7.1 setup
Included in the S8 active subwoofer kit:
•    Machined MDF cabinet 
•    Dayton SPA250 plate amplifier
•    1 LSK 8" paper cone subwoofer
•    1 piece of acoustic stuffing
•    1 Speaker grille