JBL 4281F Dual 18-Inch High-Power Cinema Subwoofer for Immersive Theater Systems
1600W Rated | 139 dB Peak SPL | 30 Hz Extension | 14.97" Shallow Depth
Overview
The JBL 4281F is a dual 18-inch professional cinema subwoofer engineered for high-impact low-frequency performance in modern theater environments. Designed as part of the JBL Cinema Series, it delivers powerful, room-filling bass in a compact, installation-friendly form factor. With a shallow 14.97-inch depth and top-mounted input terminals, the 4281F integrates easily behind screens or into baffle walls—ideal for Dolby Atmos, DTS:X, and traditional surround formats.
Capable of producing up to 139 dB peak SPL, the 4281F features two high-excursion 18" transducers housed in a vented enclosure tuned for extended response down to 30 Hz. Its 4-pin input connectors allow for flexible wiring in either parallel or discrete mode, depending on amplifier configuration. Built-in rigging points support overhead or wall-mounted deployment, and the cabinet footprint matches JBL’s 3153, 4253, and C200 Series screen speakers for seamless system alignment.
Whether used in single-screen cinemas, multiplexes, or immersive post-production rooms, the 4281F delivers the clarity, punch, and reliability expected from JBL’s professional cinema lineup—without exceeding budget or space constraints.
Technical Specifications
| Category | Specification |
|---|---|
| Transducers | Dual 18" (457 mm) high-excursion woofers |
| Frequency Response | 30 Hz – 500 Hz (-10 dB) |
| Rated Power Handling | 1600W |
| Peak SPL | 139 dB |
| Nominal Impedance | 4 Ohms |
| Input Connectors | 4-pin terminal block (parallel or discrete mode) |
| Rigging Support | Yes – Dolby Atmos / DTS:X compatible |
| Enclosure Construction | MDF cabinet with black vinyl wrap |
| Mounting Terminals | Top-mounted binding posts |
| System Compatibility | Matches JBL 3153, 4253, and C200 Series footprint |
Physical Data
| Dimension | Value |
|---|---|
| Height | 43.3 in (1100 mm) |
| Width | 29 in (737 mm) |
| Depth | 14.97 in (380 mm) |
| Net Weight | 120 lbs (approx.) |
| Shipping Weight | ~135 lbs (estimated) |
