Visaton K 40 8 Ohm, 1.6 Inch, Miniature Speaker
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The K 40 is a compact 4 cm miniature speaker with a Mylar diaphragm and a metal basket, made for voice and signal output in machines and equipment indoors and outdoors. This 8 Ω version handles 1 W rated power and weighs 10 g. Its IP67 front-side protection applies when it is built into a sealed enclosure.
Typical applications
- Voice and signal output in machines
- Indoor and outdoor equipment
Full specifications
| Rated power | 1 W |
|---|---|
| Maximum power | 2 W |
| Nominal impedance | 8 Ω |
| Frequency response (−10 dB) | 350–6000 Hz |
| Mean sound pressure level | 83 dB (1 W/1 m) |
| Resonance frequency fs | 520 Hz |
| Voice coil diameter | 13.5 mm |
| Height of winding | 1.8 mm |
| Cut-out | 36.5 mm |
| Net weight | 0.01 kg |
| Terminals | Solder joints |
| Protective system | IP67 — front side in a sealed enclosure |
| Temperature range | –25 to 70 °C |
Dimensions and drawings

Dimension drawing · Open original image
Installation and cabinet guidance
Allow for a 36.5 mm opening and the 40 mm basket, with about 6 mm behind the panel for the body and solder points. Support the basket evenly; bonding to the panel may be needed for the front-side sealing.
Solder to the rear points and observe polarity. Use an output stage suitable for the 8 Ω load and keep the drive within the 1 W rating.
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