Bosch LC2-PC60G6-10 Ceiling Mountable Woofer - 60 W RMS - White - 100 W (PMPO) - 10in Polypropylene Woofer - 45 Hz to 150 Hz - 167 Ohm

167 Ohm impedance extracts maximum power so you will get more output from your speakers Handles up to 60 W of RMS power Listen to deep lows and euphoric highs with a frequency range of sound from 45 Hz-150 Hz