Jackson 2919914585 Pro Series Spectra Bass IV Electric Bass

The Jackson Pro Series Spectra Bass SBP IV is a four-string electric bass built for players who need a flexible, stage-ready instrument with detailed control over their sound. Its 34-inch scale, 24-fret layout, and offset Spectra body provide a familiar long-scale bass format for rehearsals, recording, and live performance. The Transparent Black Burst finish highlights the layered wood construction while maintaining a professional, understated look.

This model combines a neck-through-body design with a five-piece maple and walnut neck to support stable feel and sustained note response. Graphite reinforcement is integrated into the neck construction, and the satin Speed Neck profile is designed for fluid movement across the fingerboard. A 12-inch to 16-inch compound-radius caramelized jatoba fingerboard supports both lower-position grooves and higher-register playing.

Nordstrand SB4-N and SB4-B single-coil soapbar pickups provide neck and bridge voices that can be blended to suit different musical roles. The pickup set uses Alnico V magnets and is paired with volume, blend, and active three-band EQ controls. A three-way variable mid-frequency switch adds another layer of tonal shaping when dialing in a bass sound for a particular mix.

The SBP IV includes a two-way active/passive toggle, allowing the bass to operate with the active EQ engaged or bypassed. This gives the player a direct passive option if the active circuit is not in use. The Jackson Single-String bridge is designed to provide separate string support for note attack and sustain.

Gold hardware, sealed die-cast tuning machines, Dunlop Dual-Locking strap buttons, and nickel-plated steel strings complete the instrument's performance-focused hardware package. It is a practical option for bassists upgrading from an entry-level instrument or adding a versatile four-string to an existing bass rig. Connect it to a suitable bass amplifier or recording interface chain to use its pickup blend, EQ, and active/passive switching options effectively.

Key Features

• Multi-Laminate Body: Layers poplar burl, walnut, maple, and mahogany for a distinctive visual and structural design.
• Neck-Through Construction: The five-piece maple and walnut neck runs through the body for stable feel and sustained response.
• Nordstrand SB4 Pickups: Neck and bridge soapbar pickups provide blendable bass tones with Alnico V magnets.
• Active/Passive Switching: A two-way toggle lets you engage the active EQ or bypass it for passive operation.
• Variable Mid Control: A three-way switch selects mid-frequency ranges for more targeted EQ adjustment.
• Compound-Radius Fingerboard: The 12-inch to 16-inch caramelized jatoba fingerboard supports low-position and upper-register playing.

Design & Installation

The Spectra Bass SBP IV uses a satin-finished multi-laminate body, a satin five-piece maple/walnut neck, gold-finished hardware, and a color-matched 2x2 Jackson headstock. Its body has the offset Spectra shape, with no pickguard or neck plate. Oval dark pearl position inlays, black pickup covers, dome-style control knobs, and a black plastic nut round out the visual details.

As an electric bass, this instrument is used with a compatible bass amplifier, DI, or recording setup and a standard instrument cable. Set the volume and pickup blend first, then use the active three-band EQ and variable mid switch as needed; use the active/passive toggle to bypass the active circuit. The included truss rod wrench is intended for truss-rod adjustment at the nut, while normal string height and intonation setup are handled at the individual-string bridge.