For its newsletter subscribers only, newegg offers the Energy 10" 400-watt Powered Subwoofer, model no. ESW-C10, for $399.99. Coupon code "EMCNFND56" drops it to $149.99. With free shipping, that's $50 under our mention from last summer, and the lowest total price we could find now by $229. Features include a power rating of 400 watts RMS / 150 watts continuous, 32Hz to 140 Hz frequency response, and more. Deal ends April 8.