The Klipsch Reference RS-42 II is a compact surround speaker designed for use in home theater systems. It features a sleek and modern design that allows it to blend seamlessly with various room decors. The speaker utilizes a 4-inch woofer and a 1-inch aluminum dome tweeter, which work together to deliver clear and dynamic sound across a wide frequency range. It has a frequency response that typically spans between 80 Hz to 24 kHz, allowing it to reproduce both low and high frequencies effectively. The RS-42 II has a sensitivity rating of around 90 dB, which means it can produce high output levels even with relatively low power input. Its horn-loaded technology helps in providing enhanced efficiency and better sound dispersion. The speaker is suitable for both wall-mounting and shelf placement, making it versatile for different room setups. It is also designed to work well with other speakers in the Klipsch Reference series for a matched sound profile in surround sound applications.