• Product Info.
  • A New Exciter Vibrates any Solid Object to Make Sound

    photo:DAB390RA

    Star Micronics has developed a new exciter device, DAB390RA, which could vibrate any solid object to make it into a high fidelity speaker.

    The newly developed DAB390RA is a dynamic exciter, which consists of a coil and a magnet. It is yet another achievement of Star Micronics, made possible only with Star’s long tradition of minituarization and micro audio technology.

    DAB390RA can turn virtually any solid object into a speaker. As it does not need an opening to let out sound, it provides you a greater design freehand. Also, it is intrinsically watertight and dust proof. The vibrating surface can be curved or of other non-flat shape. DAB390RA offers a great design versatility.

    Attach it to a conference room table and it is now a speaking table. A whiteboard, or a presentation screen can be an multimedia audio system with no dedicated cone speakers. Automobile applications could be limitless; the console panel now talks to you and guides you when you are at the wheel. The walls and pillars beeps alarm if you are in danger. Some hybrid and eletric cars may be dangerously quiet, but no more. They could now gently talk to pedestrians, as its talking bumper can say "coming through".

    Star Micronics now starts marketing activities for the DAB390RA exciter, and continues to refine its design for an optimized commercial product. We hope we could serve our customers in many different applications.

    Features

    • Attaches to solid object and vibrates it to make sound
    • Excites multiple oscillation modes for wide directivity
    • Easily becomes watertight as it needs no opening as sound outlet
    • Rigid structure for robust circuitry
    • Light and compact, yet gives high output

    Specification

    Model Name DAB390RA
    Impedance 8Ω ±15%
    Sound Pressure(*) Typ. 98dB at 500Hz
    Typ. 92dB at 1kHz
    Typ. 89dB at 2kHz
    Typ. 91dB at 5kHz
    Minimum Resonant Frequency(*) 570Hz
    Rated Input 1W
    Operating Temperature -20 to +70℃
    Storage Temperature -40 to +85℃
    Dimensions ø39 – h11.5mm
    Weight 25g

    *Measured with 1W input, microphone at 10cm distance, Open air on rear side.
    Attached to acrylic panel (PMMA) 10cm(H)×20cm(W)×2mm(D)