Jackson 2919904503 JS3 4-String Electric Bass

The Jackson JS Series Spectra Bass JS3 is a right-handed, 4-string electric bass designed for players who want flexible onboard tone shaping in a full-scale instrument. Its 34-inch scale length, 24-fret layout, and offset Spectra Bass body provide a familiar platform for practice, recording, rehearsal, and live performance. The Gloss Black version carries model number 2919904503 and uses a laurel fingerboard.

This bass is a practical choice for players moving beyond basic passive bass controls or building a versatile first performance rig. Two Jackson medium-output humbucking pickups provide the foundation, while a blend control lets the player balance neck and bridge pickup voices. A two-way toggle adds coil-split switching for additional pickup character.

The JS3 combines passive pickups with an active three-band EQ circuit. Its volume knob has a push/pull active-passive selector, allowing the active circuit to be bypassed when desired. This gives players a direct passive operating option if battery power is unavailable.

For feel and playability, the bolt-on maple neck uses a scarf-joint construction and a satin finish. The bound laurel fingerboard has a 12-inch to 16-inch compound radius, becoming flatter higher on the neck. Twenty-four jumbo frets and white dot inlays support a broad playing range.

The poplar body uses an offset shape with a large upper horn intended to distribute the instrument's weight and reduce neck dive. A Jackson HiMass bridge supports the strings, while sealed die-cast tuning machines handle tuning adjustment. It is well suited to a bass amplifier, recording setup, or a larger stage rig where onboard EQ and pickup options can be used to refine the instrument's voice.

Key Features

• 4-String, 34-Inch Scale: Full-scale dimensions provide standard electric-bass string spacing and feel.
• Dual Humbucking Pickups: Jackson medium-output neck and bridge pickups offer selectable blended tones.
• Active/Passive Operation: Push/pull volume control bypasses the active EQ circuit when needed.
• Three-Band Active EQ: Active bass, middle, and treble adjustment supports detailed tone shaping.
• Coil-Split Switching: Two-way toggle switch changes the humbucker pickup configuration.
• Compound-Radius Fingerboard: Laurel fingerboard transitions from 12 to 16 inches across its length.

Design & Installation

The JS3 uses a gloss-finished poplar Spectra Bass body, a satin maple neck, white neck binding, and black nickel hardware. Its black pickup covers, dome-style control knobs, and unique Jackson 2x2 headstock complement the Gloss Black finish. The instrument has no pickguard or neck plate listed in its manufacturer specifications.

Set up the bass with the supplied nickel-plated steel .045-.105 string gauges or a compatible replacement set appropriate for its 34-inch scale. The supplied saddle-height wrench and truss-rod wrench support routine setup adjustments; the truss rod adjusts at the nut. Use the push/pull volume control to select active or passive operation, then use the blend, coil-split toggle, and active EQ controls to configure the sound for the rest of the bass rig.