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Description
JOSAWA ALFC-457 - 2-Way 4″ Ceiling Loudspeaker with Backbox and Aimable Tweeter
JOSAWA ALFC-457 is a compact 2-way 4″ ceiling loudspeaker featuring an integrated backbox and an aimable tweeter for precise high-frequency directionality. With a frequency response of 90–20000Hz, sensitivity of 87dB (1W/1m), and compatibility with both low-impedance (8Ω, 40W) and 100V/70V constant voltage systems (20/10/5/2.5W), this speaker is ideal for AV installations in commercial, educational, and office environments.
The enclosure is made of white ABS (RAL 9016) with a powder-coated iron mesh grille, ensuring durability and a clean appearance. The 4″ woofer features a 25.8mm voice coil, ferrite magnet, and PCK+PF cone for solid low and midrange performance, while the ¾″ silk dome tweeter delivers clear high frequencies. Installation is simplified with a 180mm mounting hole.
Functionality:
- 2-way design with 4″ woofer and aimable tweeter
- compatible with low-impedance (8Ω) and 100V/70V systems
- integrated backbox - improved acoustic control and easy installation
- wide frequency response - 90Hz to 20000Hz
- high sensitivity - 87dB (1W/1m)
Features:
- rated power: 40W (8Ω)
- power taps: 20W / 10W / 5W / 2.5W @ 100V
- frequency response: 90-20000Hz
- sensitivity: 87dB (1W/1m)
- line input: 100V / 70V; 8Ω
- mounting hole: Ø180mm
- dimensions: Ø204x137mm
- panel material: ABS, white RAL 9016
- grille: powder-coated iron mesh
- woofer: 4″ (PCK + PF), voice coil Ø25.8mm, KSV former, 416g ferrite magnet, iron basket, Conex spider
- tweeter: ¾″ silk dome
- unit weight: 2.1kg
- gross weight (4 pcs): 13.5kg
- packing dimensions (4 pcs): 58x55x28cm
JOSAWA ALFC-457 is a reliable ceiling speaker solution that combines compact design, high-quality sound, and clean aesthetics - perfect for professional AV installations.