Based on the development and production of the company's SCS series, Sonitron improved on the frequency characteristics of its piezo speaker system for more flatness in the frequency response curve. The SPS series are based on a sandwich construction of a specially-shaped piezo ceramic disk and a composite polymer membrane. The complex polymer membrane reduces resonance peaks and converts vibrational energy into a highly damped frequency response curve with low distortion. The speakers are very flat in design. They can be delivered with open front and mountable against the panel inside a closed unit in which sound holes are provided. The sound output pressure is created through air holes in the front on which the speakers are mounted.
The piezo speaker has 60% more net sound output per membrane surface than an electro-dynamic speaker with respect to the average current drain and average sound pressure level. They have high sound quality and they can be used in difficult environmental conditions and applications because of the resistance of the front to water, humidity, vibration and dust.
Applications are found in mobile communication equipment such as GSM, WAP, GPRS, flat LCD computer screens and computer monitors, car radio sound systems, instrumentation, portable sound reproduction devices, public address systems, paging systems, etc.
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