Symphony II 5-212/C8/25 HEX

The ETON Symphony II 5-212 is a top-class 5" midwoofer driver for audiophile DIY loudspeaker projects and speaker manufacturers that demand Hexacone diaphragm technology, genuine deep bass extension down to below 50 Hz, and a wide range of applications from deep bass to the midrange. The heart of the Symphony II 5-212 is the patented multilayer Hexacone diaphragm: the honeycomb structure, adopted from aerospace technology, combines exceptional flexural rigidity with low moving mass (Mmd = 9.6 g) and an effective radiating area of Sd = 80 cm². The Hexacone diaphragm remains dimensionally stable even at high excursions up to Xmax ±2.5 mm – linear, controlled, without partial resonances at high levels. With a resonance frequency of 53 Hz (TSP), a force factor of BL = 5.8 Tm, and a power handling of 50 W (IEC 60268-5), the Symphony II 5-212 delivers a high-SPL, deep-reaching reproduction from 53 Hz to approx. 2–3 kHz.

With a Qts of 0.43 and an equivalent volume of 8.5 dm³, the Symphony II 5-212 is flexibly designed for bass-reflex enclosures from approx. 10–20 liters – with optimal tuning around 40–50 Hz, deep bass extension down to below 40 Hz is achievable. The mechanical Xmax of ±7.5 mm provides a generous safety margin beyond the linear range – even at 50 W and low frequencies, reproduction remains controlled and low in distortion. With a total diameter of 148 mm and a weight of 1.26 kg, the Symphony II 5-212 is the 5" format in the Symphony II range for projects that demand genuine deep bass and Hexacone diaphragm quality in a compact enclosure. Made in Germany, from the ETON factory.

Why the ETON Symphony II 5-212 for your project?

• Patented multilayer Hexacone diaphragm: aerospace technology in loudspeaker construction – dimensionally stable at the highest levels, linear at 50 W as at 1 W, without partial resonances
• BL = 5.8 Tm / fs 53 Hz (TSP) / Sd = 80 cm²: powerful motor with generous diaphragm area for deep-reaching bass reproduction down to below 40 Hz in a bass-reflex enclosure
• Xmax ±2.5 mm electrical / ±7.5 mm mechanical: high linear excursion for low-distortion reproduction even at 50 W and low frequencies below 50 Hz
• Qts 0.43 / Vas 8.5 dm³: designed for bass-reflex enclosures from approx. 10–20 liters – compact 2-way loudspeakers with genuine deep bass
• 88 dB / 50 W (IEC 60268-5) / Ferrite 1.15 T / Le = 0.46 mH: high efficiency and thermal power handling for high-SPL reproduction in long-term operation
• 148 mm Ø, 68 mm depth, 1.26 kg: compact 5" format for 2-way and 3-way systems with genuine deep bass. Made in Germany.

For DIY projects and speaker manufacturers that demand Hexacone diaphragm technology, genuine deep bass, and a wide range of applications in a compact 5" format – the ETON Symphony II 5-212. Made in Germany, from the ETON factory.