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FBT KEIRON 8S eight-element active install column speaker shown from side angle with vertical array configuration
FBT KEIRON 8S eight-element active install column speaker showing driver configuration and mounting details
FBT KEIRON 8S eight-element active install column speaker with integrated amplifier and controls
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FBT KEIRON 8S eight-element active install column speaker shown from side angle with vertical array configuration
FBT KEIRON 8S eight-element active install column speaker showing driver configuration and mounting details
FBT KEIRON 8S eight-element active install column speaker with integrated amplifier and controls
Home Speakers & Amplifiers Speakers Passive Subwoofers FBT KEIRON 8S Passive 8″ Subwoofer
FBT Keiron 8C 8-element passive install column speaker with vertical driver array and mounting bracket
FBT KEIRON 8C Passive 8" Loudspeaker $799.99
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FBT KEIRON 8S wall mount bracket in black and white finish, front view
FBT KR-W 8S KEIRON 8S Wall Mount Bracket - Black or White $139.99
FBT

FBT KEIRON 8S Passive 8″ Subwoofer

$624.99

The FBT KEIRON 8S is a compact passive subwoofer engineered to extend low-frequency response within KEIRON column speaker systems. It houses an 8″ LF woofer in a scratch-resistant wooden enclosure and requires external processing, with no internal passive crossover.

Available on backorder

SKU: FBT-KEIRON 8S BLK & WHT Categories: Passive Subwoofers, Speakers, Speakers & Amplifiers Tag: FBT Brand: FBT
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Description

FBT KEIRON 8S — Compact Passive Subwoofer for KEIRON Systems

KEIRON 8S Overview

The FBT KEIRON 8S is a compact passive subwoofer purpose-built to complement and extend the low-frequency performance of KEIRON column speaker systems. It features a high-performance 8″ LF woofer housed in a robust wooden enclosure finished with scratch-resistant paint, delivering clean, musical bass extension. Notably, the KEIRON 8S is designed without an internal passive crossover, requiring external DSP or amplifier processing for optimal system integration and tuning. It is well suited for system integrators, install engineers, and venues deploying KEIRON column arrays in fixed-installation environments.

The compact enclosure form factor allows for discreet placement in architectural settings where low-frequency reinforcement is needed without sacrificing aesthetics or footprint.

Key Features

  • 8″ LF Woofer — High-performance low-frequency driver engineered for clean, musical bass reproduction within KEIRON system configurations
  • Low-Frequency Extension — Supports bass response down to 42 Hz for full-range system coverage when paired with KEIRON column speakers
  • No Internal Passive Crossover — Crossover-free design requires external processing, enabling precise system tuning and DSP-controlled integration
  • Robust Wooden Enclosure — Rigid cabinet construction provides acoustic integrity and durability in permanent installation environments
  • Scratch-Resistant Paint Finish — Durable surface treatment suited for fixed-install applications where long-term appearance is a priority
  • KEIRON System Integration — Designed specifically as a low-frequency companion to FBT KEIRON column speaker systems for cohesive, matched performance
  • Compact Form Factor — Space-efficient enclosure allows discreet placement in architectural and venue environments

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Learn More About the FBT KEIRON 8S

    • Official FBT KEIRON 8S Product Page
    • KEIRON 8S Datasheet (PDF, 1.29 MB)
    • KEIRON 8S Datasheet Revised January 2026 (PDF, 0.31 MB)
    • KEIRON User Manual (PDF, 4.35 MB)
Additional information
Brand

FBT

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About brand
The FBT elettronica SpA was founded in 1963 in Recanati, a small town in the center of Italy, historically known for its affinity to the poetic, musical and artistic world. For over 60 years they have been designing and manufacturing in Italy highly professional audio products, with the aim of providing sound specialists around the world with the best quality in touring, install and portable sound.
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