TOA PC-648R Ceiling Speaker

Certainly, here’s a rewritten list based on the provided information:

– **Rated Input:** 15 W (100 V, 70 V line)
– **Rated Impedance:**
– 100 V line:
– 670 Ω (15 W)
– 1 kΩ (10 W)
– 2 kΩ (5 W)
– 3.3 kΩ (3 W)
– 70 V line:
– 330 Ω (15 W)
– 670 Ω (7.5 W)
– 1 kΩ (5 W)
– 2 kΩ (2.5 W)
– 3.3 kΩ (1.5 W)
– **Sensitivity:** 96 dB (1 W, 1 m) (500 Hz – 5 kHz, pink noise)
– **Frequency Response:** 45 Hz – 20 kHz (peak -20 dB)
– **Speaker Component:** 20 cm (8″) coaxial cone-type
– **Dimensions for Fixing Hole:**
– Mounting hole: φ250±3 mm (φ9.84″±0.12″)
– Ceiling thickness: 5 – 25 mm (0.2″ – 0.98″)
– **Speaker Mounting Method:** Spring clamp
– **Applicable Cable:**
– 600 V vinyl-insulated cable (IV wire or HIV wire)
– Solid copper wire: φ0.8 – φ1.6 mm (equivalent to AWG 20 – 14)
– 7-core twisted copper wire: 0.75 – 1.25 m² (equivalent to AWG 18 – 16)
– **Connection:** Push-in connector (bridging terminal-2 branch type)
– **Finish:**
– Baffle: Steel plate, white (RAL 9016 equivalent), paint
– Grille: Surface-treated steel plate net, white (RAL 9016 equivalent), paint
– **Dimensions:** φ280 × 92 (D) mm (φ11.02″ × 3.62″)
– **Weight:** 1.6 kg (3.53 lb)
– **Accessory:** Paper pattern

Integrated with a speaker unit and panel, the PC-2852 Ceiling Mount Speaker features an all-metallic construction, ideal for use in a voice alarm system. Its spring clamp mechanism facilitates easy mounting to the ceiling. Additionally, the input impedance can be easily adjusted by changing the tap position of the transformer. The push-in type input terminal block simplifies cable connections and allows for bridge wiring.