The Neptune 8.0 spokeless stainless steel grill speakers with LED accents are constructed with with aluminum housing for durability. The speakers are built to last with little to no maintenance required and feature a high quality finish that won't fade from sun exposure. Pro 8 speaker technology creates loud, clear, and balanced sound that will not flex or distort. MC Edition Neptune 8.0 speakers come with Mastercraft tower nub adapters. 200 watts RMS/400 watts peak power handling. 4 ohm impedance.