Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Visaton Exciter – an exciting loudspeaker

Visaton Exciter – an exciting loudspeaker

A loudspeaker without a membrane which can be mounted on any flat surface solves aesthetical and technical problems.

Fans of HiFi sound and similar „audiophils“ usually don´t cover their loudspakers and surely not their membranes. Firstly, to cover a beautiful top-class loudspeaker is almost a sin :-) and naturally all that stands in a way of sound usually influences it in a negative way.
However, totally different situation is in traffic, audio bells, industrial conditions, in various kiosks (POS) and other applications. Here a loudspeaker is usually mounted behind various covers so as to be protected from mechanical damage. For these applications we can use various industrial loudspeakers which are available in dust- and water-proof versions.

If we go even further, applications where even a perforated loudspeaker cover is undesirable – weather from aesthetical or a technical point of view. For these purposes German company Visaton offers elegant solution – “Exciter”. Visaton Exciter is in fact a loudspeaker without a membrane optimized to be mounted on a flat panel, where by a mechanical connection with a given surface a final “loudspeaker” arises.

How does it function?
Do you remember the physics from a primary school and something about Newton´s law of action and reaction? This is exactly the same principle. Electromagnetic field in loudspeker´s coil acts by a force on a front plate of the Exciter and also on a rear part of the loudspeaker (the magnet). As a rear part with a magnet is much heavier than the front plastic one, the loudspeaker has sufficient “reserve” to efficiently wobble a given panel (on which it is mounted). This way a panel becomes a membrane.
To reach the highest possible efficiency, it´s desirable to mount the Exciter on the panel which is relatively thin and lightweight. An extreme example it might be to mount the Exciter on (infinitely) rigid panel and then a rear part with magnet would oscillate, i.e. the sound would be produced only backwards – behind the panel. It´s easy to imagine, that resulting properties of a sound generated by Exciter are strongly dependent on a panel on which it is mounted. That´s why a frequency response can´t be found in the datasheet. As for mounting – it can be done by screws or by glueing.

 Usable materials and shapes: 

  • the bigger the surface, the better reproduction and volume of low frequencies
  • efficiency (and the volume) is higher at light-weight panels
  • the panel should be rigid (anti-resonant) and from a non-magnetic material

Advantages:: 

  • „invisible “ loudspeaker
  • completely protected from environment influence (weather, water, vandalism,…)
  • easy installation
  • able to produce quality sound in a wide radiation pattern
  • usable on many materials including plexi-glass (acryl) and glass

Disadvantages: 

  • lower efficiency in comparison to standard loudspeakers
  • devices, which can touch a vibrating panel can cause sound distortion
  • acoustics strongly dependent on a material, dimensions and a shape of the panel

Further tips for practical usage as well as a list of suitable materials (panels) can be found in the EX45S, EX60S datasheets as well as in the “Principles of Exciter technology” description.
We´re able to supply you Visaton Exciter in a short leadtime at favourable conditions. Many other Visaton components belong to our standard stock offer.


Visaton Exciter – an exciting loudspeaker – [Link]

The post Visaton Exciter – an exciting loudspeaker appeared first on Electronics-Lab.







 

More Articles to Read

Peeqo is a desktop bot that communicates through GIFs
Peeqo is a desktop bot that communicates through GIFs
Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs
Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs
Serial seven segment LED display shield
Serial seven segment LED display shield
G-code controlled drawing plotter
G-code controlled drawing plotter
An Arduino round word clock
An Arduino round word clock
The Sandwich-o-Matic will make your lunch automatically
The Sandwich-o-Matic will make your lunch automatically
Scalar Network Analyser Jr
Scalar Network Analyser Jr
An Arduino-controlled automated whiskey distillery
An Arduino-controlled automated whiskey distillery
The Rex800 looks like a dinosaur Terminator
The Rex800 looks like a dinosaur Terminator
Home Environment Monitor
Home Environment Monitor
Understanding the Operation of the Frequency Synthesizer in Maxim’s RF Transceivers
Understanding the Operation of the Frequency Synthesizer in Maxim’s RF Transceivers
App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor
App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor
Noisy ESP8266
Noisy ESP8266
App note: Noise analysis for high-speed op amps
App note: Noise analysis for high-speed op amps
Skill Sunday: Arrays
Skill Sunday: Arrays
App note: Infrared remote control implementation with MSP430FR4xx
App note: Infrared remote control implementation with MSP430FR4xx
Gesture Controlled Smart Home
Gesture Controlled Smart Home
Design for a Wideband, Differential Transimpedance DAC Output
Design for a Wideband, Differential Transimpedance DAC Output
Wrist thrusters let you fly through the water effortlessly
Wrist thrusters let you fly through the water effortlessly
Bertan/Spellman 225-20R HV power supply teardown
Bertan/Spellman 225-20R HV power supply teardown

Top


Shares