The Seymour Duncan JB Model TB-4 Trembucker Pickup - Bridge / Reverse Zebra is a high-output bridge humbucker designed for six-string electric guitars.

Trembucker Spacing & Hot Rodded Component Architecture

Based on a design originating in the early 1970s, this model is engineered with hot coils and an Alnico 5 bar magnet to provide a prominent upper midrange attack, an articulate low end, and detailed high frequencies. 

Due to its tonal characteristics, this bridge pickup is used across a variety of musical styles, including blues, country, hard rock, and metal.

This version is a Trembucker, meaning it is built with wider pole piece spacing to achieve symmetrical alignment under the strings of guitars featuring a tremolo system or a wide-spaced hardtail bridge. 

This spacing is intended for instruments measuring two inches or wider from the centre of the low E string to the high E string directly over the bridge pickup. 

The unit features a high-output DC resistance of 17.4K. It can be utilised as a standalone bridge pickup or paired with a Jazz neck model to establish a calibrated set.

Production Standards & Installation Options

Manufactured at the Seymour Duncan factory in Santa Barbara, California, the pickup is built with a nickel silver bottom plate and features a reverse zebra colour scheme. 

It is equipped with a 4-conductor lead wire, which allows installers to choose between standard humbucking or multiple custom wiring configurations, such as coil-splitting. 

To prevent microphonic feedback and ensure stable operation under high-gain conditions, the entire assembly undergoes a vacuum wax potting process.

Seymour Duncan JB Model TB-4 Trembucker Pickup Features & Specifications

• Trembucker F-spaced layout designed for guitars with tremolo systems or wide hardtail bridges

• Bridge position placement with a high-output tonal profile

• Sound signature characterised by an upper midrange emphasis, tight low end, and singing highs

• Suitable for diverse genres ranging from blues and country to hard rock and metal

• Constructed using hot-wound coils and an Alnico V bar magnet

• Measured DC resistance rating of 17.4K

• Four-conductor lead wire supports multiple custom wiring configurations

• Vacuum wax potted to minimise microphonic squeal at high volumes

• Built with a standard nickel silver bottom plate

• Visual design features a reverse zebra colouration

• Designed for humbucker-equipped 6-string electric guitars

• Can be paired with the Jazz neck model for a hot-rodded configuration

• Hand-built at the manufacturer facility in Santa Barbara, California