I have the 1000 GTX.
Immediately forget discos with these speakers: no bass (they should start cutting to 120 Hz) and treble are horrible has strong power. These piezo poorly filtered. The power may be waiting for you (a hundred watt max, not 400 advertised) but twetters you have ears pierced. A 100 w woofer saturates.
on the other hand for institutional (speech, music mute, ...) they are not too bad.