January 2012 – Murata Electronics North America introduced the the world’s thinnest waterproof piezoelectric speaker product line, complementing their existing line of non-waterproof thin speakers. The new VSLBG2216E1100-T0 Waterproof Piezoelectric Speaker provides enhanced sound quality and placement flexibility for Smartphone and Tablet PC designs. Measuring only 0.9mm in thickness, the speaker retains its ultra low profile proportions and unique watertight abilities (IPX7 compliant) while increasing performance. These innovations make the speaker ideally suited for mobile electronics, particularly thin ones that may be exposed to wet environments or possible short-term submersion.

Waterproof Piezoelectric SpeakerThe new larger waterproof piezoelectric speaker can offer greater sound output yet still eliminate the need for the costly waterproof cover sheet that is required for conventional speakers.

This new Waterproof Piezoelectric Speaker is IPX7 compliant device. IPX7 is Waterproof performance grade defined by JIS and IEC. This grade indicates waterproof protection against immersion in water for a short period of time. To be more specific, this standard is defined in JIS C0920 (IEC 60529).

There are numerous other benefits to Murata’s impermeable speakers. The high torque piezoelectric motor allows the thin speaker to effectively work with very small back cavity volumes (i.e. 20cc) that prove to be very challenging for conventional speakers. In addition to eliminating the costs of the waterproof sheet and its installation, the VSLBG2216E series offers higher quality music playback because the sound output hole is no longer blocked. Piezo thin speakers do not use a magnet, so designers do not need to worry about iron sand absorption or electromagnetic noise. Further, the new speaker uses a lower primary resonant frequency than the previously introduced VSLBG1914E1400-T0, enhancing lower frequency response.