Form Factor 4B8LH-4

4×8" Neo Bass Cabinet with High-Output Center Tweeter

Compact Footprint. Massive Stage Authority. Precision American Engineering.

The Form Factor 4B8LH-4 is a next-generation compact bass cabinet engineered for players who demand clarity, speed, low-frequency punch, and portability without sacrificing power. Designed and hand-assembled in California, the 4B8LH-4 leverages our proprietary engineering processes to deliver the unmistakable Form Factor sound in a highly portable, tightly tuned enclosure.

With 800W RMS power handling, four precision 8″ Neo transducers, and a high-output center tweeter, this cabinet brings extraordinary articulation and depth to stages and studios of every size. From modern slap and fusion to vintage thump and rock-driven low end, the 4B8LH-4 reacts instantly to your playing while maintaining exceptional transparency and controlled punch.

High Power, Low Weight, Maximum Expression

Despite its compact footprint, the 4B8LH-4 is built for demanding real-world performance.
With 800 watts RMS and a 4-ohm load, it converts every watt of amplifier power into tight, controlled low end and clear, harmonically rich detail.

Our Neo/Lite platform dramatically reduces weight to just 46 lbs (20 kg), making load-in and load-out effortless while preserving the depth, projection, and musicality that Form Factor cabinets are known for.

Engineered for Precision — Built for the Road

Every 4B8LH-4 cabinet is milled on state-of-the-art CNC machines and hand-assembled at our California facility. This ensures exact component alignment, flawless structural integrity, and long-term reliability under professional touring conditions.

The cabinet features:

• Precision-jointed construction

• Internal cross-bracing for reduced resonance

• Our proprietary Italian Lite Ply enclosure for superior rigidity and reduced mass

• A dual-component polyurethane exterior finish for decades of durability

This combination of next-generation engineering and classic craftsmanship produces a cabinet with remarkable consistency, stability, and sonic purity.

Four 8″ Neo Transducers + High-Output Tweeter

The 4B8LH-4 is built around four lightning-fast 8″ neodymium drivers, providing exceptional transient response, tight low-frequency control, and a remarkably articulate midrange.

A high-output tweeter sits at the center of the cabinet, delivering crystalline high-frequency detail that remains smooth and musical—never harsh. The side-mounted attenuator allows you to dial in exactly the right amount of high-end extension for your style.

The Form Factor Sound: Transparency, Punch, and Musical Depth

Every contour of the 4B8LH-4 was engineered to support natural, uncolored bass reproduction. This cabinet moves air with authority but retains the nuanced detail and tonal complexity that discerning bassists demand.

The result is a cabinet that:

• Enhances the natural character of your instrument

• Maintains definition at high stage volumes

• Responds musically across all playing techniques

• Provides studio-grade articulation in live environments

This is the Form Factor signature—refined, powerful, transparent, and unmistakably modern.

Specifications

Why Bassists Choose the Form Factor 4B8LH-4

• Compact cabinet with exceptional projection and low-frequency authority

• Four Neo 8″ drivers for unmatched clarity, articulation, and transient speed

• High-output center tweeter with adjustable attenuation

• Lightweight yet rugged construction for touring reliability

• Precision-engineered enclosure for optimal driver performance

• Transparent, full-range tonality suitable for every genre

• Hand-built in the United States using premium components

Compact Size. Full-Scale Power. Refined American Craftsmanship.

The 4B8LH-4 delivers a level of articulation, punch, and tonal neutrality rarely found in compact cabinets. Whether used as a standalone solution or in a multi-cabinet stack, it brings new life to your bass tone and performs at the highest professional level.

Experience the next generation of bass cabinet engineering with the Form Factor 4B8LH-4.

Add to Cart and elevate your sound.