Form Factor 4B10

The Flagship of the Bass Instinct Series™ — A Full-Scale, Full-Impact 4×10" Cabinet with Compression Driver

The Form Factor 4B10 is the largest and most commanding cabinet in the Bass Instinct Series™. Designed for bassists who need absolute authority on stage, the 4B10 produces a massive, room-filling wall of sound with the clarity, punch, and refined detail that define every Form Factor product. It is a cabinet built not only to be heard, but to be felt.

With 1000W RMS power handling, four high-performance 10" ceramic transducers, and a 1.4" high-output compression driver, the 4B10 delivers explosive low-end extension, articulate midrange, and crisp, controlled highs that remain musical at all volumes. Whether powering stadium stages or high-demand studio sessions, this cabinet delivers uncompromising performance.

1000 Watts of Headroom and Heavy-Duty Authority

The 4B10 is engineered for bassists who demand large-format projection and maximum sonic stability.
Its 1000W RMS rating ensures enormous clean headroom, maintaining low-frequency integrity even under extreme playing dynamics.

Despite its power and size, the 4B10 retains the same transparent, uncolored character as other Form Factor models—accurately reproducing the true sound of your instrument and technique.

Precision-Crafted in California — Built for a Lifetime of Performance

The 4B10 is milled on state-of-the-art CNC machines and hand-assembled at our California production facility. Every cut, joint, and brace is engineered to enhance structural rigidity and optimize acoustic behavior.

Key construction details include:

• Precision-jointed Baltic Birch cabinet

• Internal cross-bracing for reduced resonance and maximum clarity

• Dual-component polyurethane finish for extreme durability

• 18 AWG powder-coated steel grill

• Side handles for balanced lifting and transport

Every detail of the enclosure is optimized to support the most powerful 4×10 configuration we’ve ever built.

Four 10″ Ceramic Woofers + 1.4″ Compression Driver

This cabinet features four custom-voiced 10″ ceramic transducers designed for fast transient response, dense low-frequency reproduction, and a high-impact midrange that cuts through any mix.

A 1.4″ high-output compression driver adds controlled, studio-grade high-frequency detail, ideal for players who require enhanced articulation, clarity, and dynamic nuance. The side-mounted attenuator allows the high-frequency content to be shaped to your performance environment and playing style.

The result is a full-range, powerful, harmonically rich tone with exceptional projection.

The Form Factor Sound: Power, Precision, and Musical Depth

The 4B10 embodies the sonic philosophy that defines Form Factor Audio:

• Transparent tone that honors your instrument

• Controlled, musical lows with zero flab

• Midrange clarity that holds its place in dense mixes

• Smooth, articulate highs without harshness

• Consistency across all playing styles—from fingerstyle to pick to slap

This is a cabinet that elevates your sound while remaining faithful to your technique.

Specifications

Model: 4B10
Configuration: 4×10" Ceramic Woofers | 1×1.4" Compression Driver
Frequency Response: 45–18,000 Hz
Sensitivity: 101 dB
Power Handling: 1000W RMS
Impedance: 4Ω or 8Ω
Connectors: 2 × NL4 Speakon™
Finish: Gig Armor™ Textured Black
Hardware: 18-AWG Powder-Coated Steel Grill
Handles: 2 (one per side)
Materials: Calibrated Baltic Birch
Dimensions:

• 591 × 776 × 400 mm

• 23.3 × 30.5 × 15.7 in
  Weight: 94 lbs / 43 kg
  Made In: California, USA

A Statement Cabinet for Bassists Who Demand the Best

The Form Factor 4B10 is a precision-engineered, American-built powerhouse designed for players who expect immense output, uncompromising tonal accuracy, and tour-grade durability.
It is the cabinet that anchors the biggest stages—and brings out the absolute best in your sound.

Experience the flagship of the Bass Instinct Series™.

Add the Form Factor 4B10 to your arsenal today.