Seymour Duncan SH-4JB-7STR - JB MODEL 7 EASEL BLACK
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Manufacturer Information
Seymour Duncan
https://www.seymourduncan.com
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Algam SAS
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A reference in the Seymour Duncan range for decades
The JB is an absolute classic at Seymour Duncan: for over 35 years, it has established itself as the flagship "hot" humbucker of the brand and one of the most played double coils worldwide. Its identity is simple and highly effective: volume, character, and a harmonic response that makes you want to crank the amp.
For whom and for which styles?
Mounted in the bridge position, this SH-4JB-7STR is aimed at 7-string guitarists who want a pickup capable of handling both heavy riffs and expressive leads. From heavy blues to angry rock'n'roll to heavy metal, it remains musical while offering a clear attack and a biting tone.
The JB "punch": sustain, harmonics, and wiring options
Thanks to its Alnico V magnet and high output level, the JB Model 7 delivers singing highs, present mids, and harmonics that are easy to bring out-perfect for sustaining solos and punchy rhythms. The 4-conductor wiring allows for coil splitting to expand the tonal palette (clearer sounds, airier textures, sharper attacks). If you want to soften the top end, some guitarists pair it with a 250k potentiometer to tame the highs while preserving the pickup's character.
Technical specifications
| Electronics | Passive |
| Category | electric microphone |
| Instrument | guitar, 7-string guitar |
| Magnet | alnico V |
| Winding | double |
| Number of conductors | 4 |
| Position | bridge |
| Resistance | 18.8 KILOHM |
| Color | Black |
| Model | JB model SH-4JB-7STR |
| Applications | all styles, from heavy blues to heavy metal |
| Split | Yes |
| Active | No |
| Peak frequency | 5.5 kHz |
| Finish | Black |
| Others | Interference shielding |
Questions frequently asked
Is the Seymour Duncan SH-4JB-7STR compatible with a 7-string guitar?
This model is designed for a 7-string electric guitar and is mounted in the bridge position. Its format corresponds to the JB Model reference SH-4JB-7STR.
What sound does the JB Model 7 offer in the bridge position?
The Alnico V magnet and the 18.8 kΩ resistance provide a high output level, with present mids and bright highs. Harmonics stand out easily for leads, while the attack remains clear in rhythm playing.
Can the JB 7-string pickup be coil-split?
The 4-conductor wiring allows for humbucker splitting. It is thus possible to obtain clearer sounds and a more cutting attack.
What styles can this Seymour Duncan 7-string pickup cover?
Its output level and resonance peak at 5.5 kHz make it suitable for genres ranging from heavy blues to heavy metal. Energetic rock'n'roll is also within its recommended applications.
Which potentiometer should be used to soften the highs of the JB Model 7?
A 250 kΩ potentiometer can be used to tame the top end. This configuration preserves the pickup's character while softening the highs.



