Dayton Audio 25mm Coin Exciter DAEX25CT-4 10W 4Ω

The Dayton Audio DAEX25CT-4 is a compact 25 mm coin-type exciter that converts surfaces into speakers, delivering up to 10 W RMS from a 1" voice coil with a peel-and-stick 3M VHB mount.

Small but powerful, this coin exciter is engineered to make nearly any rigid surface radiate sound—from cabinet doors and displays to toys and interior panels. Built around a neodymium motor and proprietary voice coil, the DAEX25CT-4 offers higher sensitivity than many similarly sized exciters and uses a 4 Ω load compatible with small Class D amps. The pre-applied 3M VHB adhesive makes attachment fast and durable, so you can prototype or install permanent audio solutions without drilling or extra hardware.

How loud and powerful is this tiny transducer?

Despite its compact footprint, the DAEX25CT-4 supports 10 W RMS input thanks to a full-inch voice coil that accepts more power than typical coin exciters. Loudness will vary with the chosen mounting surface, but the neodymium motor and efficient coil design help maximize acoustic output while keeping power needs modest.

• 10 W RMS power handling through a 1" voice coil for higher output
• Neodymium magnet improves sensitivity and lowers amplifier demand
• 4 Ω impedance suitable for many small Class D amplifiers
• Surface-dependent SPL — thin/smaller panels trend brighter, thicker/larger panels yield fuller sound

What surfaces work best with the DAEX25CT-4 and how does mounting affect sound?

This exciter turns rigid materials into radiating surfaces; characteristics of the surface determine frequency balance and loudness. Thinner, lighter panels emphasize mid and high frequencies and often sound louder, while thicker, larger panels reproduce fuller low frequencies but may need multiple exciters to reach similar SPLs.

• Ideal for plastics, woods, glass, and thin metal panels
• Smaller/thinner panels = brighter, mid/tweeter character
• Larger/thicker panels = fuller range, may require multiple exciters
• Pre-applied 3M VHB adhesive ensures efficient energy transfer to surfaces

How easy is installation and wiring for prototypes or final builds?

Installation is designed to be quick and compact: peel the pre-applied 3M VHB backing and press the exciter to the chosen surface for a strong bond. Two PCB solder pads keep wiring neat; because of the high sensitivity, you can often use very small amplifiers for powering the unit.

• Pre-applied 3M™ VHB™ adhesive — peel-and-stick mounting
• Two PCB solder points for tidy, low-profile connections
• Compact dimensions (≈48 mm diameter, 15 mm depth) fit tight spaces
• Works with small Class D amps at 4 Ω for simple system design

What technical specs and design details should I know before buying?

The DAEX25CT-4 is engineered around a 25 mm (1") voice coil and neodymium magnet to balance power handling and compact size. While its resonant frequency and frequency response depend on the mount, the transducer's mechanical design allows efficient coupling and robust performance in many lightweight audio applications.

• Voice coil diameter: 25 mm (1") for 10 W RMS handling
• Impedance: 4 Ω, DC resistance ~3.6 Ω
• Overall diameter ≈48 mm, depth ≈15 mm; adhesive outer diameter 27 mm
• Pre-applied adhesive and solder pads for quick installs; 5-year parts and labor warranty

Who is this for? The Dayton Audio DAEX25CT-4 is aimed at designers, makers, and integrators who need a discreet, high-sensitivity exciter for compact enclosures, interactive exhibits, toys, displays, or furniture-based audio. Choose this model if you want a peel-and-stick installation, higher-than-average power handling for its size, and compatibility with small 4 Ω amplifier modules. For larger installations or deeper bass, pair multiple exciters or select thicker panel materials to achieve the desired frequency balance.