For serious car audio enthusiasts, a high-output alternator is an essential component. It provides the necessary power to run your amplifiers, subwoofers, and other power-hungry components without draining your battery or causing voltage drops that lead to distortion and system failure. But choosing the right one can be tricky. This comprehensive guide will help you navigate the world of high-output alternators and find the perfect fit for your car audio setup.
What is a High Output Alternator?
A high-output alternator is simply an alternator designed to produce significantly more amperage (measured in Amps or A) than a standard alternator fitted as original equipment in your vehicle. Standard alternators typically output between 60-100 amps, while high-output units can range from 100 amps all the way up to 300+ amps, or even more in specialized applications. This increased amperage capacity is crucial for powering demanding car audio systems, especially those with multiple amplifiers and powerful subwoofers.
Why Do I Need a High Output Alternator for My Car Audio System?
If your car audio system draws significant current, a standard alternator might struggle to keep up. This leads to several problems:
- Dimming Headlights: When your audio system demands high current, the alternator may not be able to provide enough power, leading to dimming headlights, especially at high volumes.
- Voltage Drops: Voltage drops reduce the quality of your audio. You'll hear distortion, clipping, and a general decrease in the overall sound quality.
- Battery Drain: Continuously running a high-power car audio system can quickly drain your battery if the alternator can't keep up with the demand. This can leave you stranded.
- System Failure: In severe cases, insufficient power can cause components in your system, such as amplifiers, to overheat and fail.
What Size High Output Alternator Do I Need?
Determining the correct amperage is crucial. You need an alternator that can comfortably handle the total amperage draw of your entire car audio system plus the power needs of your vehicle's essential electrical components (lights, ignition, etc.).
To calculate your system's total draw, add the amperage ratings of each component (amplifiers, subwoofers, other accessories). Add a safety margin of 20-30% to account for peak demand and fluctuations. This total will indicate the minimum amperage rating you need from your high-output alternator. It's always better to overestimate than underestimate.
How to Install a High Output Alternator?
This is not a DIY task for everyone. Installing a high-output alternator typically involves removing the old alternator, installing the new one, and potentially upgrading the wiring to handle the increased amperage. Incorrect installation can damage your vehicle's electrical system, so if you're not comfortable working with car electrical systems, it's best to seek the services of a qualified auto electrician or car audio installer.
What are the common challenges faced when installing a high output alternator?
Installing a high output alternator can present challenges beyond the typical alternator replacement. These include:
- Wiring Capacity: Existing wiring might not be sufficient to handle the increased amperage. Upgrading to heavier gauge wiring is often necessary to prevent overheating and voltage drops.
- Belt Tension: High-output alternators are often physically larger and heavier, requiring adjustments to belt tension to ensure proper operation.
- Compatibility: Ensure that the alternator you choose is compatible with your vehicle's model and year. Incorrect fitment can cause problems with pulley alignment or mounting.
- Electrical System Load: Adding a powerful alternator to an older system that might have aging wiring or components elsewhere can cause other issues.
What are some of the best brands of high output alternators?
Several reputable brands manufacture high-output alternators for car audio. Research individual brands and models thoroughly to ensure they meet your specific requirements. Look for reviews from other users to gauge their reliability and performance. Avoid extremely cheap alternators, as these often lack the quality and durability needed for reliable operation.
Are there any potential downsides to using a high output alternator?
While offering significant advantages, high-output alternators aren't without potential drawbacks:
- Cost: High-output alternators are generally more expensive than standard units.
- Increased Load on the Engine: They place a slightly increased load on your engine, potentially affecting fuel efficiency (although this is often marginal).
- Potential for Overcharging: An improperly installed or malfunctioning high-output alternator could overcharge your battery, damaging it over time.
By carefully considering your system's power requirements and understanding the potential benefits and drawbacks, you can choose the right high-output alternator to power your car audio system reliably and efficiently. Remember to consult with a professional car audio installer for guidance and installation if you're unsure about any aspect of the process.
