EVE Audio TS108 8 in. 150W Active Subwoofer with Passive RadiatorThe EVE Audio TS108 8 Inch Active Subwoofer offers even more bass for your studio extending the low end of your setup. It features a frequency range of 33 to 300 Hz, an 8 Inch woofer size and 105 dB maximum sound pressure level. It delivers adequate and precise control over the bass frequencies in your room, without any low port noise distortion since all subwoofers have a passive radiator. All subwoofers feature the powerful accurate and low