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    Bose Forum FC108 Multipurpose Loud Speaker User Manual

    By Updated:3 Comments5 Mins Read
    Bose Forum FC108 Multipurpose Loud Speaker

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    Bose Forum FC108 Multipurpose Loud Speaker

    Bose-Forum-FC108-Multipurpose-Loud-Speaker-Product

    Overview

    • Forum FC108 is an 8-inch full-range coaxial point-source loudspeaker that delivers exceptional fidelity and output in a compact, install-friendly form factor. With a frequency range of 53 Hz–20 kHz and 122 dB max peak SPL, Forum FC108 provides clear, impactful sound for small-to-mid installations.
    • The design features a high-excursion coaxial driver and Beamwidth Matching Waveguide technology for consistent 110° × 60° coverage, ensuring even audio distribution across the space.
    • The fully tuned passive crossover means no additional processing is required—just plug in and get excellent performance with any full-range signal.
    • Designed for easy installation, Forum FC108 offers surprisingly high output from a compact enclosure, making it well-suited for a variety of installations—right out of the box.

    For larger venues or higher output needs, you can also check the Bose Forum FC112 12-inch Loud Speaker Instructions Manual for setup and technical details.

    Key Features

    • Fully tuned passive crossovers for excellent performance right out of the box.
    • High-excursion coaxial drivers deliver up to 122 dB max peak SPL.
    • Beamwidth Matching Waveguide technology for consistent 110° × 60° coverage.
    • Compact, rotatable cabinets with square grilles for flexible installation.
    • Robust cabinet construction for long-lasting durability. Factory-optimised loudspeaker presets, when combined with Bose.
    • Professional amplifiers and processors IP43-rated for indoor and protected outdoor environments
    • Mounting options include U-bracket, surface-mount pan-and-tilt bracket, suspension rail, and optional eyebolt suspension.

    Applications

    • Retail / restaurants
    • Houses of worship
    • Performing arts
    • Education
    • Corporate
    • Hospitality

    Footnotes

    1. Frequency response and range measured in passive mode using the Klippel Near Field Scanner (NFS) system.
    2. AES transducer test and Bose Professional extended-lifecycle test, passive and bi-amplified.
    3. Bose Professional extended-lifecycle test using pink noise filtered to meet IEC 268-5, 6-dB crest factor, 500-hour duration.
    4. Bose Professional peak power test using 6-dB crest factor pink noise, 96-hour duration with recommended loudspeaker processing.
    5. Maximum SPL calculated using sensitivity and power ratings, exclusive of power compression.

    Frequency Response

    Side profile view of the Bose Forum FC108 loudspeaker showing mounting inserts

    Beamwidth

    Front view of FC108 speaker driver and compression tweeter exposedDimensions

    Back panel of Bose FC108 showing Neutrik speakON NL4 connector and barrier strip

    Right View

    Top of Bose Forum FC108 loudspeaker with mounting points

    Front View (without grille)

    Underside of FC108 speaker displaying threaded inserts for mounting

    Rear View
    Bose FC108 loudspeaker coverage diagram showing 110° × 60° dispersionTop View

    FC108 speaker frequency response chart from 53 Hz to 20 kHz

    Bottom View

    Forum FC108 surface-mount pan-and-tilt bracket and U-bracket installation

    1. Dimensions are shown in millimetres over inches.
    2. Dimensions also apply to the opposite side.

    Technical Specifications

    SINGLE-LOUDSPEAKER PERFORMANCE
    Frequency Response (-3 dB) 175 Hz – 17,000 Hz
    Frequency Range – (- -10 dB) 153 Hz – 20,000 Hz
    Nominal Coverage Pattern110° horizontal × 60° vertical
    AUDIO PERFORMANCE 2PassiveBi-amp
    Power Handling, Long-term Continuous 3150 W150 W (LF) + 20 W (HF)
    Power Handling, Peak 41200 W1200 W (LF) + 320 W (HF)
    Sensitivity (SPL / 1 W @ 1 m)94 dB94 dB
    Calculated Maximum SPL @ 1 m, Continuous 5115 dB116 dB
    Calculated Maximum SPL @ 1 m, Peak121 dB122 dB
    CrossoverInternal passive or external bi-amp. Use Bose Professional presets for optimal performance when bi-amplified.
    Loudspeaker EQBose Professional presets available
    TRANSDUCERS
    Low Frequency1 × 8.0 in (203 mm) woofer
    High Frequency1 × 1.7 in (43 mm) compression driver
    Nominal Impedance8 Ω, passive / 8 Ω (LF) + 8 Ω (HF), bi-amp
    PHYSICAL
    Enclosure MaterialBirch plywood
    Finish2-part spray polyurethane coating, black
    GrillePerforated steel, powder-coated finish, black
    LogoRotatable
    Environmental 6IP43, protected-outdoor usage
    Connectors(1) Neutrik® speakON® NL4, (1) barrier strip
    Suspension / Mounting(6) M10 threaded inserts (2 on top, 2 on bottom, 1 per side)

    (4) M8 threaded inserts (rear panel, for surface-mount pan-and-tilt bracket)

    (4) M6 threaded inserts (1 on top, 1 on bottom, 1 per side)

    (3) M8 threaded inserts (bottom, for external pole adapter)

    Product Dimensions (height × width × depth)318 mm × 318 mm × 279 mm (12.5 in × 12.5 in × 11.0 in)
    Net Weight, Single Loudspeaker12.7 kg (28.1 lb)
    Shipping Weight14.7 kg (32.3 lb)
    Package Contents(1) Forum FC108, (1) installation guide
    Optional AccessoriesForum FC108 U-bracket, AMM suspension bracket, surface-mount pan-and-tilt bracket, AMUPOLEAT external pole adapter
    PRODUCT CODES
    Forum FC108 loudspeakerA00205-0100  FC108 MULTIPURPOSE LDSPKR
    Forum FC108 U-bracketA00508-0100  FC108, U-BRACKET, BLACK
    AMM suspension bracket843344-0010  AMM SUSPENSION BRACKET
    AMUPOLEAT external pole adapter893630-0100  KIT, AMU POLE CUP, BLK
    Surface-mount pan and tilt bracket, black889687-0100  PAN & TILT BRACKET, BLK
    Surface-mount pan and tilt bracket, white889687-0200  PAN & TILT BRACKET, WHT

    Warranty

    Customer Support

    MA 01748 USA Bose is a trademark of Bose Corporation. ArenaMatch is a trademark of Transom Post OpCo LLC. ©2024 Transom Post OpCo LLC.

    FAQs

    Q: What type of loudspeaker is the FC108?

    The FC108 is a two-way, full-range loudspeaker with a high-frequency tweeter and an 8-inch low-frequency driver.

    Q: What is the coverage pattern of the FC108?

    The FC108 is perfect for evenly dispersing sound in small to medium-sized spaces because of its wide horizontal dispersion and controlled vertical coverage.

    Q: Can multiple FC108 units be used together?

    It is possible to use numerous FC108 devices for greater sound levels or broader coverage.

    Q: Which amplifiers are recommended for the FC108?

    Make use of an amplifier that offers the proper power and impedance match. For best results and overload prevention, Bose suggests Bose Professional amplifiers.

    Q: Does the FC108 have built-in volume or EQ controls?

    No, neither volume nor equalisation controls are integrated into the FC108. The amplifier or external DSP system must be used to modify the sound.

    Q: Is the FC108 compatible with Bose DSP systems?

    Indeed, it works with Bose Professional DSP systems for accurate equalisation, protection, and tuning, enabling uniform sound quality throughout installations.

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