6.5″ full‑range driver — Uses a 6.5‑inch paper‑cone speaker unit, suitable for broad-range audio (music and speech).

Selectable Power Taps: 6 W / 3 W at 100 V line — Lets you choose output power depending on room size and usage (background music, PA, announcements, etc.).

Frequency Response: 100 Hz – 15 kHz — Covers a wide frequency range, ensuring clarity for both low and high audio frequencies.

Sensitivity / Sound Pressure Level: ~93 dB @ 1 W / 1 m — Good efficiency, so even with modest power it can produce clear and audible sound in small‑to‑medium spaces.

100 V (or 70 V) line compatibility — Built-in transformer for PA / distributed audio systems, making it easy to integrate into common public‑address setups.

Compact ceiling‑mount design with spring‑clip installation — The speaker’s shape and mounting mechanism support quick in‑ceiling installation, ideal for commercial or residential ceilings.

ABS enclosure + metal grille, white finish — Gives a clean, low‑profile look that blends well with typical ceilings and interiors.

Well‑suited for background music, announcements, and PA systems — Because of its power taps and decent frequency range, CSK‑66E is a good choice for offices, shops, schools, hotels, waiting rooms — anywhere you need background sound or periodic announcements.

Efficient multi‑speaker setups possible — With 100 V line support and modest power draws, you can use multiple such ceiling speakers in one zone without heavy amplifiers — useful for larger areas or distributed audio systems.