Sound Barrier SBLA285SUB — Dual 18″ Passive Subwoofer
SBLA285SUB Overview
The Sound Barrier SBLA285SUB is a 4800W passive subwoofer engineered for professional touring, concert, and large-venue applications where high-output bass reinforcement is required. Its proprietary double Sub Scoop cabinet construction integrates the efficiency advantages of horn-loaded designs with the extended low-frequency reach of vented-box principles, delivering exceptionally clean, punchy bass from a compact enclosure. Each cabinet houses two 18″ woofers with 125mm voice coils, consistent with the demands of professional line-array concert systems. This design is well-suited for system integrators, touring companies, and production engineers who require reliable, high-SPL subwoofer performance at scale.
The reverse woofer orientation optimizes rear chamber volume and reduces the horn flare rate, extending low-end performance while avoiding the time delay and weight penalties associated with conventional horn-loaded subwoofer designs.
Key Features
- 4800W Power Handling — High-capacity passive design capable of handling demanding touring and concert-level drive levels
- Double Sub Scoop Cabinet Construction — Proprietary enclosure geometry combines horn-loaded and vented-box behavior for broadband low-frequency efficiency
- Dual 18″ Woofers with 125mm Voice Coils — Large-format drivers deliver the displacement and thermal capacity required for sustained high-SPL output
- Horn-Loaded Behavior Over Primary Range — Provides the efficiency and pattern control advantages of horn loading without conventional horn time-delay artifacts
- Vented-Box Assist for Lowest Octave — Vented-box principles extend low-frequency reach and contribute to tight, articulate bass reproduction
- Reverse Woofer Orientation — Optimizes rear chamber volume and decreases horn flare rate for improved low-end extension
- Line-Array System Compatible — Cabinet design and construction standards align with professional concert line-array deployment requirements
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