FBT Install Keiron 4C W White

A Speaker from the Keiron Series, Dedicated to Refined Installations

The FBT Install Keiron 4C W belongs to the Keiron series, a range focused on installation sound reinforcement where compactness, finish, and ease of integration are paramount. With Italian manufacturing and a particularly discreet cubic form factor, it naturally fits projects seeking a clean visual appearance while maintaining controlled response for daily sound distribution.

Intended Uses and Venues

This passive speaker is designed for nearfield sound reinforcement and environments where aesthetics are as important as intelligibility: retail stores, restaurants, hotels, meeting rooms, reception areas, museums, and exhibition zones. Its 4-inch driver favors clear midrange reproduction, helping to maintain intelligible vocals and pleasant background music even at moderate volume levels.

With a nominal impedance of 16 Ohms, it suits multi-speaker configurations well (depending on amplification and wiring choices). The manufacturer recommends a 100 W RMS amplifier for comfortable operation, while the speaker's nominal power handling is 50 W RMS.

Coaxial Design, Even Dispersion, and Simplified Integration

2-Way Coaxial Architecture

The Keiron 4C W features a 2-way coaxial configuration, combining a 4-inch woofer (1.5-inch voice coil) and a 1-inch tweeter (1-inch voice coil). This design aims for a more "point source" sound with increased coherence between frequency ranges, useful when the speaker is placed close to listeners or in reverberant spaces.

90deg x 90deg Coverage and Recommended Filtering

The 90deg H x 90deg V dispersion facilitates placement to cover an area evenly. The crossover frequency is specified at 3 kHz. To ensure safe operation in the low-frequency range, a recommended high-pass filter at 90 Hz (24 dB per octave slope) is advised, which can be implemented via a processor or digital management system.

Wiring and Installation

The Euroblock input connector with " in & through " design is intended for installation wiring (feed and return), convenient for chaining to a second speaker. The enclosure is made of plywood. For mounting, an adjustable bracket is available as an option (reference WM-45 ), sold separately, allowing precise aiming of the speaker according to the coverage area.

Technical specifications

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Brand / Series	FBT Install, Keiron series	Frequency Response	100 Hz - 20 kHz
Model	Keiron 4C W	Sensitivity	91 dB (1 W / 1 m)
Type	Passive speaker	Max Peak SPL	114 dB
Manufacturing	Italy	Crossover Frequency	3 kHz
Color	White	Dispersion	90deg H x 90deg V
Configuration	2-way coaxial	Recommended High-Pass Filter	90 Hz - 24 dB per octave
Enclosure	plywood	Recommended External Filter	digital management with preset
RMS Power	50 W	Input Connector	Euroblock in & through
Peak Power	200 W	Mounting	adjustable bracket sold separately (WM-45)
Recommended Amplifier	100 W RMS	Dimensions	134 x 134 x 134 mm
Nominal Impedance	16 Ohms	Weight	2.6 kg
Driver	4 inches (101.6 mm), 1.5-inch (38.1 mm) voice coil	Manufacturer Reference	46174
Tweeter	1 inch (25.4 mm), 1-inch (25.4 mm) voice coil