The MB Quart QL 90 W is a mid-range car audio speaker designed to deliver high-quality sound and performance in automotive settings. It features a robust construction with materials selected for durability and sound reproduction quality. The speaker is part of the QL series, which is recognized for its balance of performance and affordability. Key specifications include a frequency response range typically from 40 Hz to 21 kHz, allowing for deep bass and clear highs. The power handling capability is rated at around 90 watts RMS with a peak handling capacity that can reach up to 180 watts. Additionally, the QL 90 W may come equipped with a 1-inch silk dome tweeter, which enhances its ability to produce crisp treble frequencies. This speaker is designed to provide a smooth and detailed sound profile, making it suitable for various music genres. The installation process is straightforward, making it accessible for both professional installers and DIY enthusiasts.