I have used many times with great pleasure the past few years, alone or with other complment 4000 and 9000 on large configurations.
Super Systm, unjustly mconnu, incredible power for its size, an incomparable finesse (motor 1 "?) Stro trs image nice and big thanks homognit the use of coaxial sources. We can do without subs in some configurations ... (The 4000LO is responsible for the band 45,160 Hz) can use the same voice 4000HI alone! Trs modular Easy set up, possibility to master the vertical as horizontal linkages based.
Report quality unbeatable price, very easy and can not be amortized by the sound quality and reliability