The Heco SK 115 is a passive subwoofer that is designed to enhance the bass response of audio systems. It features a significant driver size, typically around 15 inches, which enables it to produce deep and impactful bass frequencies. The enclosure is designed to optimize sound projection and minimize distortion, often constructed from MDF for durability and sound quality. This model may also come equipped with adjustable bass ports to fine-tune the low-frequency output to suit different room acoustics. The SK 115 is suitable for a variety of applications, from home theaters to music listening setups, and is compatible with various amplifiers, providing flexibility for integration into a wide range of systems. Furthermore, it may feature a sensitivity rating that allows for efficient power usage while delivering powerful sound performance at various volume levels. Overall, the Heco SK 115 aims to provide a balanced sound profile with a strong emphasis on low frequencies.