The NR‑20KS is an 8 Ω passive horn speaker designed for dependable public address and paging applications. With a moisture‑proof build and compact form, it delivers clear sound projection across a focused frequency band. This model is ideal for environments requiring robust, weather‑resistant audio solutions and straightforward installation.
Constructed with durable plastic housing and a secure mounting bracket, the NR‑20KS facilitates installation in outdoor or mildly humid conditions. The moisture‑proof design ensures longevity and reliability, while its compact size--90 mm in diameter and 105 mm in depth--weighing only 0.39 kg--makes it discreet and versatile.
| Specification | Details |
|---|---|
| Total power rating | 10 W |
| Power rating (RMS) | 5 W |
| Impedance | 8 Ω |
| Frequency range | 800-7 000 Hz |
| Sound pressure level (SPL) | 103 dB/W/m |
| Radiation/beam angle (H × V) | 80 degrees × 80 degrees |
| Housing material | Plastic |
| Colour | Black |
| Mounting | Mounting bracket |
| Ambient operating temperature | 0 degreesC to 40 degreesC |
| Dimensions (Ø × depth) | Ø 90 mm × 105 mm |
| Weight (net) | 0.391 kg |
| Package dimensions (W × H × L) | 0.115 m × 0.1 m × 0.09 m |
| Gross weight | 0.43 kg |
With a 103 dB/W/m SPL, the NR‑20KS offers clear, intelligible sound for announcements, alarms, or spoken word in small‑ to medium‑sized spaces. The 5 W RMS rating ensures compatibility with standard PA amplifiers without overwhelming acoustic output. Its focused 800-7 000 Hz frequency range makes it particularly well‑suited for speech clarity rather than full‑range music reproduction. The 80 degrees dispersion pattern provides a good balance between coverage and directivity.
