Detail 01
Quarter-Pound
Oversized quarter-inch pole pieces widen the magnetic field, so output and low end both go up.
Product detailSKU #1274034493624
Seymour DuncanSJM-3 Quarter-Pound Jazzmaster Pickup Black Bridge
Independent shopping perspective
The Korena take
High-output single-coil replacement for Jazzmaster bridge position. For offset players who want more punch and less thin, glassy top end.
Strong match
Who this is for
- Fuzz and overdrive players who want the pickup to hit the pedal harder
- Replacing a stock Jazzmaster bridge pickup that sounds weak next to the neck
- Louder band settings where the stock bridge tone disappears
Consider the trade-offs
When to look elsewhere
- Players chasing the original quiet, glassy vintage Jazzmaster bridge tone
- Anyone with a Strat or Tele — the Jazzmaster route is a different size
- Players sensitive to single-coil hum, since this is not hum-cancelling
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Jazzmaster size
Wide, flat, shallow — it will not drop into a Strat, Tele, or P-90 cavity without routing.
Detail 03
Bridge position
Wound hotter to balance against the neck pickup, since strings move less near the bridge.
Detail 04
SS configuration
Part of a two-single-coil layout. Buy the matching neck pickup if you want a balanced pair.
Detail 05
Black cover
Standard Jazzmaster bobbin cover. Cosmetic, fits under the existing pickguard opening.
Final check
Know before you order
- 01Soldering required; no wiring harness, pots, or screws included
- 02Higher output can throw off balance if the neck pickup stays stock
- 03Big pole pieces sit close to the strings — set height low to start
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this fit a Squier Jazzmaster?
It fits standard Jazzmaster bridge routes, which Squier offsets use. Check yours isn't a model fitted with humbuckers or P-90s, which are routed differently.
02Does it hum?
Yes. It's a single-coil, so it will pick up 60-cycle hum near lights, screens, and transformers. Turning slightly changes how much you hear.
03Is it louder than the stock pickup?
Yes, noticeably. The oversized pole pieces raise output, which is the main reason people swap the Jazzmaster bridge position.
04Do I need the matching neck pickup too?
Not required, but a stock neck pickup will sound quieter by comparison. Adjusting pickup heights closes some of the gap.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsPickups & controls
- Pickup Configuration
- SS
2 detailsBody & build
- Color
- Black
- Body Shape
- Offset
