NHT Evolution W2 Subwoofer System comprising of:
4 only 12″ Subwoofers
2 only A1 NHT Amplifiers
1 only NHT X1 Electronic Crossover
I have used this system in my own home theatre.
Obviously this is a large system, and will suit medium to large rooms.
This system is in my home theatre.
Picture shows crossover and 2 power amps, unable to show a picture of the 4 sub-woofer drivers as they are behind the screen.