A double humbucker, often referred to as a humbucker pickup, is a type of electric guitar pickup that's renowned for its warm, full-bodied tone and exceptional noise-cancelling capabilities. It's a popular choice among guitarists who play rock, blues, jazz, and other genres that require a rich, resonant sound.
At its core, a double humbucker is designed to combat the hum and noise that single-coil pickups are prone to, making it an ideal choice for players who want a quieter, more articulate sound. But what exactly sets a double humbucker apart from its single-coil counterparts, and what are the different types and configurations available? Let's delve into the world of double humbucker pickups.
Understanding Double Humbucker Pickups
To grasp the concept of double humbucker pickups, it's essential to understand their basic design and how they differ from single-coil pickups.
The primary distinction lies in the number of coils. As the name suggests, a double humbucker features two coils, each with its own magnet, while a single-coil pickup has just one. This dual-coil design is what gives double humbucker pickups their unique sound and noise-cancelling properties.
The Science Behind Humbucking
Double humbucker pickups use a process called humbucking to cancel out unwanted noise. Here's a simplified explanation of how it works:
Each coil in a double humbucker pickup produces an electromagnetic field that induces an electrical current in the pickup's wire. When a string vibrates, it disrupts this field, generating a small electrical signal that's sent to the amplifier. In a single-coil pickup, this signal is prone to interference from external electromagnetic fields, such as those generated by power lines or fluorescent lights, resulting in a humming noise.
How Humbuckers Cancel Out Noise
In a double humbucker pickup, the two coils are wired in opposite directions, so that when one coil picks up noise, the other coil picks up the same noise but in reverse phase. When these two signals are combined, the noise cancels out, leaving only the desired guitar signal. This is why double humbucker pickups are known for their exceptional noise-cancelling capabilities.
Types of Double Humbucker Pickups
While all double humbucker pickups share the same basic design and humbucking principle, they can vary significantly in terms of tone, output, and construction. Here are some of the most common types:
Active vs. Passive Humbuckers
Active humbuckers, such as those made by DiMarzio and Seymour Duncan, use an onboard preamp to boost the signal and enhance the pickup's dynamic range. This results in a hotter, more aggressive sound with improved clarity. Passive humbuckers, on the other hand, don't have a preamp and rely solely on the guitar's volume and tone controls to shape the sound.
Ceramic vs. Alnico Magnets
Double humbucker pickups can be equipped with either ceramic or alnico magnets. Ceramic magnets are known for their high output and bright, aggressive tone, making them a popular choice for rock and metal players. Alnico magnets, on the other hand, produce a warmer, more vintage sound with a smoother, more articulate response.
Coil-Tapping and Coil-Splitting
Some double humbucker pickups feature coil-tapping or coil-splitting capabilities, which allow players to access the sound of a single-coil pickup by disconnecting one of the coils. This can be a useful tonal option, providing a wider range of sounds from a single pickup.
In the world of double humbucker pickups, there's a vast array of options to suit every playing style and musical genre. From the classic PAF-style humbuckers to the modern, high-output active pickups, there's a double humbucker out there for everyone. So, whether you're a seasoned guitarist looking to upgrade your sound or a beginner just starting out, exploring the world of double humbucker pickups can be an exciting and rewarding journey.