Seymour Duncan HUMBUCKER SET JB/JZ CRIMSON RED
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Manufacturer Information
Seymour Duncan
https://www.seymourduncan.com
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A Classic Born in 1974, Still Relevant Today
Created by Seymour Duncan in England in 1974, this JB/Jazz pairing has become one of the brand's most timeless humbucker sets. The concept is simple and incredibly effective: a snappy, powerful bridge pickup for impact, paired with a clear and defined neck pickup for precision. The result: a balanced, ultra-musical set that has stood the test of time without losing its edge.
For Which Guitarist, Style, and Guitars?
This set is aimed at guitarists who want to cover a wide range of styles without switching instruments. The bridge JB excels from blues and country to hard rock and metal, with a pronounced midrange attack and great articulation in palm-muted playing. The Jazz Model neck pickup delivers smooth leads, rich chords, and ideal clarity for clean tones, crunch, and singing distortion.
On a guitar equipped with humbuckers, this duo is perfect if you're looking for a bridge pickup that "pushes" the amp while maintaining a precise neck sound that never gets muddy, even with gain.
What Defines the JB/Jazz Sonic Signature
The SH-4 JB humbucker is the most popular pickup in the range: its warm coils and Alnico 5 magnet provide a solid, articulated low end, expressive mids, and harmonious highs that sing in solos. It delivers punch, presence, and an immediate dynamic response under the fingers.
The SH-2n Jazz Model also uses an Alnico 5 magnet and a specific winding: it offers a crystalline high-end response, full yet tight lows, and a slight "openness" in the mids that adds a smooth and defined character. Originally designed to complement the JB, it remains a highly versatile humbucker capable of staying clear on complex voicings as well as sustained leads.
Both pickups are built for reliable performance: nickel-silver baseplate, 4-conductor cable for multiple wiring options, and vacuum wax potting to reduce feedback risks at high volume.
Technical specifications
| Electronics | Passive |
| Category | electric microphone |
| Instrument | guitar |
| Magnet | alnico V |
| Winding | 2 doubles |
| Position | handle, bridge, set |
| Color | Red |
| Colours | Crimson Red |
| Type | humbucker pickup set |
| Included models | SH-4 JB (bridge) + SH-2n Jazz Model (neck) |
| Magnet type | Alnico 5 (both pickups) |
| Bridge pickup | warm coils, incisive mids, articulated lows, harmonious highs |
| Neck pickup | clear highs, full and tight lows, scooped mids for a smooth tone |
| Baseplate | nickel-silver |
| Wiring | 4-conductor cable (multiple wiring options) |
| Feedback treatment | vacuum wax potting |
| Manufacturing | hand-wound in Santa Barbara, California |
Questions frequently asked
What styles does the JB/Jazz set cover?
The SH-4 JB in the bridge position is designed for blues, country, hard rock, and metal, with pronounced mids. The SH-2n Jazz Model in the neck position delivers a defined response for clean tones, crunch, and saturated leads.
Do the Seymour Duncan JB/Jazz pickups allow coil splitting?
Thanks to the 4-conductor wire, multiple wiring options are available. The set includes two passive humbuckers, an SH-4 JB and an SH-2n Jazz Model. Usable configurations depend on the wiring chosen on the guitar.
What is the Crimson Red color of this set?
The Crimson Red finish corresponds to the red color applied to both humbuckers in the set.
Can the JB/Jazz set handle feedback with high gain?
The vacuum wax potting of both pickups reduces the risk of feedback at high volume. The baseplate is made of nickel silver.
Which pickup is designed for the neck and bridge?
The pairing places the SH-4 JB at the bridge and the SH-2n Jazz Model at the neck. Both pickups use an Alnico 5 magnet.
