Dual 10" subwoofer with dual power amps.
The E 210 Sub AS system subwoofer comes with two 1,200-watt amps. Power amp number one drives the two internal 10″ woofers, with plenty of juice left over to run an external passive type L Sub 1200. The second power amp delivers 900 watts at 2.6 ohms to drive up to three E 835s (or six E 435s).