Woofer: Dual – Bandpass 2×30 cm Zeus – Serie 2 x 12″ (30 cm) Zeus ZX-1214 Subwoofer , Dual-Bandpass Housing with Plexiglas Load capacity: 900 watts , Impedance: 2 x 4 ohms Previously had a Crunch V2600 power amplifier in it, but it probably wasn’t quite enough, and is now broken. Measured power with it were: 127,8dB Now I bought a power amplifier from Hifonics: HIFONICS ZEUS ZXi-6400 12 dB Highpass filter 12 dB Lowpass filter 3-way crossover selector Bandpass function switchba r Variable bass boost @ 45 Hz 0 – 18 dB Adjustable input sensitivity 0.2 – 9 V Stereo/mono selector switch Encapsulated 4 gauge power connections Encapsulated 10 gauge speaker outputs Overload protection & 3-fold LED protection Bass remote cable remote control inclusive !! Blue-lit Hifonics logo 8-fold LED illumination in the upper cooling fins Chrome-plated end panels 4 x 85 / 170 Watt RMS at 4 / 2 Ohm 2 x 340 Watt RMS at 4 Ohms is enough for the woofers? Yes, right?) And what kind of performance can you expect? Would I be happy if someone knew about it?