Check the listing for details. Electro-Voice Evolve 70 15-inch Subwoofer - Black. Condition: New. Listed at 1999.00 USD. Premium, Portable, High-impact Sound Are you in need of high-impact sonic performance for large, high-energy events? Is portability a concern? The Electro-Voice Evolve 15-inch subwoofer offers an effective, straightforward solution. Part of the Electro-Voice Evolve 70 column loudspeaker system, this 15-inch subwoofer exhibits low-frequency extension down to a thunderous 35Hz, further bolstered by an efficient laminar-flow vent design and a punchy 3-inch voice coil. Beyond that, the Evolve sub boasts lightweight construction using advanced materials for the utmost portability. Here at Sweetwater, we’ve found that this subwoofer, and the Evolve 70 system as a whole, strikes a perfect balance between high power, high output, and easy portability.