Soft Dome Tweeter

Three drivers, one sound signature: warm, smooth, natural. The ETON 25SD4, 28SD1 and Arcosia 28-1 soft-dome tweeters were developed for audiophile DIY projects where fatigue-free treble and precise sound staging are the top priorities. All three drivers share an extremely low voice coil inductance of Le = 0.02 mH – the foundation for a simple, predictable crossover design. Made in Germany, from the ETON factory.

All three ETON Soft Dome tweeters share the same sound signature and the same extremely low voice coil inductance of Le = 0.02 mH. The difference lies in physical size, efficiency, and power handling – and thus their intended application.

The 25SD4 is the premier choice for high-efficiency systems: 92 dB, 1.8 T, compact form factor (90 mm diameter) – and thanks to identical dimensions, it is a direct drop-in replacement for the Harddome 26HD3. Anyone looking to switch between soft dome warmth and hard dome precision will not need a new enclosure.

The 28SD1 delivers the lowest resonant frequency in the ETON soft dome lineup (580 Hz) and thus the most flexibility when selecting a crossover frequency. It also comes in 90 mm size – and is enclosure-compatible with the Harddome 29HD2.

The Arcosia 28-1 is the most powerful soft dome driver in the ETON product lineup: 150 W power handling (IEC 60268-5), 110 mm diameter, resonant frequency 390 Hz. For high-headroom high-end systems with no compromises.