5″ Full‑Range Speaker Unit — Uses a 5-inch paper‑cone driver that covers a broad audio range suitable for music and voice.

Selectable Power Output — Offers power tap settings of 1.5 W, 3 W or 6 W at 100 V line — making it flexible for different room sizes and amplifier capacities.

Line Input: 100 V (or 70 V when configured) — Compatible with common public‑address / background‑music systems, simplifying integration in large or multiple‑speaker setups.

Frequency Response: 100 Hz – 15 kHz — Covers typical range for speech and general music playback, ensuring clear vocals and good mid/high fidelity.

Sensitivity / Sound Pressure Level (SPL): ~93 dB @ 1 W/1 m — Efficient output, meaning even at lower power settings it can deliver clear sound over a reasonable distance.

Compact and Low‑Profile Design — Approx. dimension Ø 175 mm × 60 mm height; cut‑out diameter about 150 mm — ideal for ceiling installation with minimal intrusion.

ABS Enclosure + White Metal Grille — Gives a clean, discreet look for ceiling installation; housing suitable for indoor commercial / residential use.

Easy “In‑Ceiling” Mounting with Spring‑Clip — Quick installation using spring clips — useful for retrofit or new ceiling installations without heavy labor.

Good for Background Music, PA, & Announcements — With moderate power output and wide frequency range, it’s well suited for background music, public-address systems, offices, retail shops, schools, or waiting areas.

Scalable Multi‑Speaker Systems — Because of the selectable power taps and 100 V line support, you can use multiple CSK‑56E speakers in series for larger spaces — ideal for distributed audio systems or zoned installations.