The ALX-S15P Extreme Performance Powered 15” Front Firing Subwoofer is perfect for all performance spaces, from the most laid-back to highest intensity. 600W RMS and 1,200W peak Class D digital power cuts through your audience while maintaining the incredible performance quality Altec Lansing is known for. Hosting a beastly 129dB of mind numbing bass, users will receive studio-quality sound through this active subwoofer. Altec’s specially designed solid premium grade multilayer plywood construction is both durable and dense, enhancing low frequency output.