EX25VCS-4 IMS™ Vented Conex Suspension 25mm Interchangeable Hardware Mount Exciter 20W 4 Ohm

Quick Overview

Take your product or project to the next level by turning it into a speaker! The EX25VCS-4 is designed by Dayton Audio with the exclusive IMS™ Interchangeable mounting system as well as a Conex spider and voice coil cooling air vents, for high-power applications.

Product Highlights

  • Conex suspension provides low-distortion excursion and increases power handling
  • Exclusive IMS™ Interchangeable mount allows you to A/B test different exciters
  • Rare-earth neodymium motor and a proprietary voice coil
  • Easily swap non-functional units out in the field
  • 4-ohm impedance for use with small, Class D amplifiers
  • Pre-applied 3M VHB™ adhesive for quick, durable installation

Product Manuals / Spec Sheets / Downloads

Dayton Audio EX25VCS-4 Specification Sheet

Buying Options

Dayton Audio EX25VCS-4 IMS™ Vented Conex Suspension 25mm Interchangeable Hardware Mount Exciter 20W 4 Ohm

Test the limits of your imagination and turn any surface into a great sounding speaker system

Surface exciter technology provides a universal, cost-effective alternative to loudspeakers, allowing for sound reproduction virtually anywhere it is desired. Issues such as weather, space constraints, vandalism or visibility can be avoided or minimized with the use of a sound exciter. Dayton Audio IMS™ Interchangeable Exciters may be used in a host of DIY executions to easily add sound to an existing non-audio specific project or create a portable speaker system, the unique mounting system allows you to try out the assortment of exciters offered by Dayton Audio!

Want to learn more about exciters? See our Exciters & Tactile Transducers Introduction Paper!


Key Specs:

  • Power Handling (RMS): 20 Watts
  • Power Handling (MAX): 40 Watts
  • Impedance: 4 Ω
  • Neodymium Motor


1/12th octave smoothing - measurement taken with transducer adhered off-center on a 12" x 12" x ½" foam core board in an infinite baffle setup.

Note: This information is for comparison purposes only, the actual frequency response will depend on many factors of which the diaphragm being the greatest contributor.


Aural Excitement

Dayton Audio's 25 mm EX25VCS-4 IMS™ coin type exciter features the ability to turn nearly any surface into a speaker, this exciter's small size enables audio reproduction in places never imagined: toys, monitors, cabinet doors... even windows! A neodymium magnet is employed to create maximum magnetic flux around the proprietary voice coil for increased sensitivity when compared to similar-sized exciters. In turn, this reduces power requirements and makes it possible to use very small audio amplifiers, without sacrificing total output. The 1" voice coil, and cooling vents, allows for more input power for higher output applications while maintaining a slim-line form factor.


Exclusive IMS™ Interchangeable Mounting System

IMS Tech in action

With Dayton Audio's exclusive IMS™ interchangeable mounting system, you can try out many different configurations, placements, and exciters to find the best combination for your project. Each exciter comes with a threaded mounting pad that can be permanently installed anywhere. Installation is easy, simply remove the pad from the exciter assembly, mount the pad to your project with 2 screws or with the 3M Adhesive, and screw the exciter assembly back onto the pad! The non-destructive nature of the interchangeable mount allows you to A/B different exciters or swap non-functional units out in the field without risking damage to your project or exciters.


Model Number EX25VCS-4
Color Black
Unit of Measure Each
UPC 848791009105
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) .2
Speaker Type Exciter
Power Handling (RMS) 20 watts
Power Handling (max) 40 watts
Continuous Program Power --
Impedance 4 ohms
Sensitivity --
Frequency Response --
Voice Coil Diameter 25 mm
Magnet Weight --
DC Resistance (Re) 4.4 ohms
Voice Coil Inductance (Le) 0.07 @ 10kHz
Resonant Frequency (Fs) 104.1 Hz
Mechanical Q (Qms) --
Electromagnetic Q (Qes) --
Total Q (Qts) 1.24
Diaphragm Mass Inc. Airload (Mms) --
Moving Mass Of Diaphragm (Mmd) --
Mechanical Compliance of Suspension (Cms) --
Surface Area Of Cone (Sd) --
Volume of Displacement (Vd) --
BL Product (BL) --
Compliance Equivalent Volume (Vas) --
Maximum Linear Excursion (Xmax) --
Drivers Mechanical Losses (Rms) --
Entry / Exit Diameter --
Surround Material --
Voice Coil Wire Material --
Voice Coil Former --
Basket/Frame Material --
Magnet Material --
Overall Outside Diameter 51.5 mm
Overall Depth 26 mm
Baffle Cutout Diameter --
Mounting Hole Diameter --
Bolt Circle Diameter --
Product Weight --
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