Vibration Exciters: Transform Any Surface Into a Speaker

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Fundamental Similarities

Operating Principle:

Both employ electromechanical conversion (Lorentz force) to generate structural vibrations

Coupling Method:

Direct surface excitation via bending waves (Lamb waves in kHz range)

Energy Transfer:

Mechanical energy transmission through solid materials (structure-borne → air-borne sound)

Visaton Exciter unterschiedlicher Größen

Visaton EX45S 8 Ohm
Elektrodynamischer Exciter zur Anregung von Platten zu Biegewellenschwingungen.
48,00 €*
Visaton EX60S 8Ohm
Elektrodynamischer Exciter zur Anregung von Platten zu Biegewellenschwingungen.
57,00 €*
Visaton EX80S 8Ohm
Elektrodynamischer Exciter zur Anregung von Platten zu Biegewellenschwingungen.
118,00 €*

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Technical Distinctions

Parameter	Vibration Exciters	Tactile Transducers
Frequency Focus	100 Hz - 20 kHz	5 Hz - 500 Hz
Resonance Design	High-frequency bending waves	Low-frequency longitudinal waves
Moving Mass	Light voice coils (≤5g)	Heavy inertial masses (≤200g)
Force Factor	0.3 - 0.6 N/A	1.2 - 3.5 N/A
THD @ 90dB	<1% (200Hz-5kHz)	<5% (20-200Hz)
Impedance	4-8 Ω (audio optimized)	2-4 Ω (current optimized)

Material Science Considerations

Vibration Exciters:

Tactile Transducers:

Optimal for high-stiffness materials (Young's modulus >10 GPa)

Effective in lossy materials (tan δ >0.01):

MDF board

Softwoods

Peak performance with:

Laminated glass (6-12mm thickness)

Hardwoods (oak, maple)

CFRP panels

Application Differentiation

Vibration Exciters (Audio):	Tactile Transducers:
Museum audio systems (ISO 3382-3 compliant)	Haptic feedback (IEC 62336-1)
Architectural sound installations	Motion simulator vibration (SAE J1441)
Transparent speech reproduction	Bass shakers for home theater

Installation Techniques

Vibration Exciters	Tactile Transducers
Point coupling via epoxy bonding	Surface mounting with PSA adhesives
Requires impedance matching	Current amplification critical
Minimum 4mm material thickness	Effective from 2mm thickness

Psychoacoustic Effects

Vibration Exciters: Create localized phantom sound sources (HRTF effect) Tactile Transducers: Produce non-localized whole-body vibration (Vibrotactile perception)

Conclusion:

While both technologies utilize bending wave principles, spectral analysis reveals key differences:

>500Hz: Vibration exciters superior (group delay <0.1ms)

<200Hz: Tactile transducers dominant (displacement ≤5mm)

For audiophile applications, we recommend combining both systems with a 250Hz crossover. Material selection impacts performance more than device parameters - empirical testing is essential. The optimal solution depends on whether the priority is acoustic fidelity (exciters) or tactile immersion (transducers).