Seymour Duncan SMB-4A 4-String Alnico Magnet Pickup For Music Man

The SMB-4A delivers the articulate, punchy character that defines modern Music Man Stingray tone, with responsive dynamics that translate every nuance of your playing technique. Hand-built in Santa Barbara using oversized alnico 5 rod magnets, this pickup offers the clarity and sustain serious bass players demand. A direct drop-in replacement for 4-string Stingray basses, it accommodates series, parallel, and split-coil wiring for tonal flexibility without modification.

Tone & Electronics

The 4.18 kΩ DC resistance per coil and 9.9 kHz resonant peak produce a balanced EQ signature (8/8/5 bass/mids/treble) that emphasizes low-end punch and midrange definition while keeping treble articulate without harshness. Vacuum wax potting eliminates microphonic squeal, ensuring clean operation at any volume or playing intensity.

Design & Build

Constructed with Forbon flatwork and precision hand-assembly, this pickup maintains tight tolerances and reliable performance over years of regular use. The 4-conductor wiring plus shield supports multiple wiring configurations, giving you control over your signal path and tonal shaping without requiring additional hardware modifications.

Key Features

• Oversized alnico 5 rod magnets for enhanced clarity and sustain
• Hand-built in Santa Barbara, California
• 4.18 kΩ DC resistance per coil
• 9.9 kHz resonant peak in parallel configuration
• Balanced EQ: 8 (bass) / 8 (mids) / 5 (treble)
• Vacuum wax potted for squeal-free operation
• Forbon flatwork construction
• 4-conductor wiring plus shield
• Direct drop-in replacement for 4-string Music Man Stingray basses
• Supports series, parallel, and split-coil wiring configurations

The SMB-4A combines Seymour Duncan's proven engineering with premium materials to restore or upgrade your Music Man with authentic, articulate tone.