TOA / F-1521SC

TOA's F-1521SC is a wide-directivity in-ceiling speaker that achieves an extremely wide coverage area thanks to its unique acoustic structure. It provides consistent sound quality balance, not just directly below the speaker. It is compatible with both high and low impedances.

■Speaker System
■Wide Directivity Ceiling-Mounted Speaker

■Rated Input Power
3 W (High Impedance)
■Power Capacity
Continuous Pink Noise: 9 W (8 Ω)
Continuous Program: 18 W (8 Ω)
■Rated Impedance
High Impedance 100V: 3.3 kΩ (3 W), 10 kΩ (1 W), 20 kΩ (0.5 W)
8 Ω
■Output Sound Pressure Level
88 dB (1 W, 1 m)
■Frequency Response
65 Hz to 18 kHz (-10 dB), 45 Hz to 20 kHz (-20 dB)
Installed in a Semi-Free Sound Field (Measured with the Speakers Mounted in the Center of the Ceiling)
■Speaker Type
10 cm Cone-Type
■Speaker Type
3 W: Class L (92 dB when measured with the Fire Service Act Enforcement Regulations' second voice alarm signal) dB(A) or higher)
1 W: M-class (measured at 87 dB(A) or higher with the second signal of the audio alarm sound according to the Fire Service Act Enforcement Regulations)
0.5 W: S-class (measured at 84 dB(A) or higher with the second signal of the audio alarm sound according to the Fire Service Act Enforcement Regulations)
■Acoustic Power Level
90 dB
■Directivity Classification
X (0° to 15°: Q=1.6, 15° to 45°: Q=2.1, 45° to 90°: Q=1.5)
■Mounting Hole Dimensions
φ135 mm (Maximum Panel Thickness: 37 mm)
■Input Terminal
One-touch Plug-in Connector (Feed Terminal, 2-Branch Type)
■Compatible Wire
600 V Vinyl-Insulated Wire (IV Wire, HIV Wire)
Solid Wire (Copper Wire): φ0.8 to φ1.6 mm (equivalent to AWG 20-15)
2
Stranded Wire (7-Core Copper Wire): 0.75-1.25 mm (equivalent to AWG 18-17)
■Operating Temperature Range
-10°C to +50°C
■Finish
Body: Flame-retardant ABS resin (resin material flame-retardant grade: UL94 V-0 equivalent), black
Frame: Flame-retardant ABS resin (resin material flame-retardant grade: UL94 V-0 equivalent), off-white (similar to Munsell N9.5), painted
Punched Net: Rolled steel plate, off-white (similar to Munsell N9.5), painted
Dust Bag: Synthetic fiber, black
■Dimensions
φ155 x 117 (D) mm
■Weight
1 kg (including panel)
■Accessories
Panel...1, Template...1

*Do not cover the speaker with insulation or soundproofing material. Also, keep the speakers away from insulation.