What Is the Purpose of a Car Stereo Crossover?

Car audio crossovers are a necessity for specialized sound systems.

For many, the simple task of turning on your in-dash receiver is more about relaxing with familiar music than fretting over speaker balance and attenuating frequencies. Car audio crossovers are one reason we can simply enjoy music and the way it is intended to sound.

Bound By Frequency

Every audio system -- from the largest home theater to the typical four-speaker car set, is equipped with a crossover. This tool splits audio signals by frequency, moving highs to tweeters and lows into woofers. Without crossovers, speakers could be damaged and the balance distorted.

When to Cross Over

Car audio systems outside the typical four-speaker set up require a stronger crossover. In multi-speaker, multi-amp sets, crossovers serve a vital role in frequency control. However, full-range speaker sets, powered by a single amp, have ample passive crossovers to keep frequencies in check.

Crossover Types

Passive crossovers are the industry standard and don't require additional connections -- all the while keeping frequencies separated. In-line crossovers are the next step, allowing your car amplifier to mute unwanted frequencies. Active crossovers perform the same function, and offer the user a multitude of fine tuning options, despite requiring extra wire for power and grounding purposes.

References

• Car Audio Help: Car Audio Signal Processors
• Car Stereo.com: What is a Crossover?

Resources

• Crutchfield: Crossover Learning Center