The A-series subwoofers compliment the A-series speakers to give you that sound upgrade solution that you have been looking for. Constructed with thick particle board for assured strength and stability, the TS-A3000LB sealed enclosure system is well tuned to reproduce powerful rhythmical bass. Built for the beginner to intermediate car audio enthusiast The TS-A3000LB enclosure houses a durable 30 cm / 12 woofer. Car Audio Centre and Pioneer recommend an amp with at least 400W RMS.