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