Over 1000 watts drive this A/V system, and only the highest quality components are used in it. I built the sub woofers and satellite speakers. Power comes from a dedicated 30 amp line run direct from the fuse panel. The dual subs go down to 20 hz. The system produces a steady 250 watts RMS, and pure class A amplification up to 40 watts. The amplifiers are extremely stable. They can drive very difficult impedence loads without breaking up. The satellite speakers are three way. I use a foam strip on the outside face of each speaker to reduce the amount of refraction from the walls. The drivers are Seas and Tonegan brands, made in Finland. They sound very natural, but also can rock with incredible clarity. I like the natural sound of Wilson speakers so that was my benchmark when making these. I used software available at Madisound.com to design the cabinet geometry, cross-overs, and driver selections. Each sub is in a 3.5 litre cabinet, and they are Tonegan 12 inch drivers. They produce down to 20 Hz, which is nearly subsonic range. Thanks for stopping by.