The Making Of The Bare Knuckle POLYMATH Humbucker Set
Compare
Bare Knuckle Polymath vs Seymour Duncan JB Model (SH-4)

Bare Knuckle Polymath
bridge humbucker
89 match
high confidence

Seymour Duncan JB Model (SH-4)
bridge humbucker
Compared with the Bare Knuckle Polymath, the Seymour Duncan JB Model (SH-4) has a brighter top end.
Specs side by side
differs marks specs where they part ways| Spec | Bare Knuckle Polymath | Seymour Duncan JB Model (SH-4) |
|---|---|---|
| DC resistancediffers | 14.2k | 16.4k |
| Inductancediffers | 8.35 H (measured, 1 reading) | 8.54 H (measured, 3 readings) |
| Magnet | Alnico 5 | Alnico 5 |
| Coil | Hum-cancelling | Hum-cancelling |
| Resonant peakdiffers | — | 5.5 kHz (Seymour Duncan's own test load) |
| Bass (tone chart)Each maker grades its own chart, so read these within a brand | 5 / 10 | 5 / 10 |
| Mids (tone chart)differsEach maker grades its own chart, so read these within a brand | 7 / 10 | 6 / 10 |
| Treble (tone chart)differsEach maker grades its own chart, so read these within a brand | 6 / 10 | 8 / 10 |
| Slot | bridge humbucker | bridge humbucker |
| Traits | high output, dark, mid-forward | high output |
How close on each spec
100 means identical on that spec. The score weighs these, and counts anything we couldn't compare as a typical difference. How scoring works
Output
97
measured inductance
Magnet
100
both Alnico 5
Coil
100
same coil type
Brightness
32
each against its maker's average
Mids
86
each against its maker's average
Bass
94
each against its maker's average
Videos
Bare Knuckle Polymath
Adam Getgood signature Bare Knuckle Polymath demonstration
Seymour Duncan JB Model (SH-4)
Seymour Duncan JB SH-4/TB-4 Bridge Humbucker Pickup Demo Clean, Dirty and Lead Tones (NO TALKING)
DiMarzio SUPER DISTORTION vs Seymour Duncan JB SH-4 - Passive Bridge Guitar Pickup Comparison Demo
What players and reviewers say
On the Bare Knuckle Polymath
“The bridge humbucker delivers tight low end control with zero flub under palm mute.”
“There is enough upper mid articulation to cut through a dense mix, but the voicing avoids harsh spike territory.”
On the Seymour Duncan JB Model (SH-4)
“The Full Shred is a tad lower in output and gets close to the lead sound of a JB.”
Comparing with Seymour Duncan Full Shred (SH-10)
“JB is very touchy. It likes the heights about the same on the high and low side.”