Check the listing for details. Electro-Voice Evolve 30M Subwoofer Cover. Condition: New with tags. Listed at 89.00 USD. Soft Cover for Your Evolve 30M's Subwoofer The Electro-Voice Evolve 30M Subwoofer Cover is made specifically to fit your Evolve 30M's subwoofer. This sharp-looking case is a secure and stylish way to transport your portable PA system from gig to gig. This durable nylon bag has a super tough exterior that protects your PA from surface damage such as dings, scratches, and rain during transport. Here at Sweetwater, we've found that this carrying case allows a solo performer to take one trip when bringing the Evolve 30M into a gig. Simply strap the column array and pole to your back, grab the subwoofer and cover, and you're ready to go. Whether you're storing it or taking it to your next gig, the Electro-Voice Evolve 30M Subwoofer Cover will keep your subwoofer in the best condition possible.