Hi‑Fi audio filter module card (dual-frequency crossover) Key benefits Clearer, more detailed treble: the module routes high-frequency signals to the tweeter, producing clearer treble and improved definition in music and vocals. Better system balance and protection: by separating high and low/mid content, it prevents unwanted frequencies from reaching tweeters or subwoofers and improves overall speaker performance. Long-term reliability: ceramic winding resistors and high-quality metal film capacitors deliver stable charge/discharge behavior, extended service life, and strong resistance to burnout. What it does Acts as a frequency divider (crossover) that separates incoming audio into frequency bands. Sends treble signals to the tweeter unit while directing low-frequency content to the subwoofer/low-frequency driver. Supports dual-frequency treble operation for precise division and cleaner playback across the system. Compatibility and applications Designed for use with high speakers (tweeters) and full-frequency speakers in car audio systems. Suitable for systems that require dedicated treble separation or bi-amping between tweeters and subwoofers. Materials and performance Ceramic winding resistors for stable resistance under load. High-quality metal film capacitors for reliable filtering and consistent Hi‑Fi performance. Built for durability and consistent operation in automotive audio environments. Practical use scenarios Car tweeter upgrade: Install this module to channel only high-frequency content to aftermarket tweeters for clearer highs and reduced distortion. Full-range speaker system with subwoofer: Use the module to split the audio so the subwoofer receives only low-frequency signals and the tweeter receives only highs, improving clarity and bass control. Component speaker crossover replacement: Replace a failing crossover in an in-car component set to restore proper frequency separation and speaker protection. What to expect after installation Noticeably clearer treble detail and tighter integration between tweeter and woofer/subwoofer. Improved protection and longevity for high-frequency drivers due to proper frequency routing. Stable, reliable operation thanks to robust component selection. Note: Designed specifically as a Hi‑Fi audio filter module card for automotive speaker systems; verify compatibility with your speaker wiring and system configuration before installation.