Symphony II 8-212/C8/37 HEX

The ETON Symphony II 8-212 is the most powerful bass driver in the Symphony II line – a top-class 8" driver for audiophile DIY loudspeaker projects and speaker manufacturers that demand Hexacone diaphragm technology, maximum bass dynamics, and extension down to below 28 Hz. The heart of the Symphony II 8-212 is the patented multi-layer Hexacone diaphragm with an effective radiating area of Sd = 222 cm²: The honeycomb structure, adopted from aerospace technology, remains dimensionally stable even under the extreme excursions that an 8" bass driver physically produces at frequencies below 30 Hz and 120 W – without partial resonances, without distortion under load. The force factor BL = 9.0 Tm is the highest value in the entire Symphony II line: precise, powerful drive at 120 W power handling (IEC 60268-5) and a mechanical Xmax of ±14.2 mm – one of the largest safety margins in its class.

With a resonance frequency of 28 Hz (TSP), a Qts of 0.31, and an equivalent volume of 80.0 dm³, the Symphony II 8-212 is designed for bass reflex enclosures of approx. 60–120 liters with low tuning around 20–28 Hz – for extension down into the infrasonic range below 20 Hz. With 91 dB efficiency, the Symphony II 8-212 is the most efficient driver in the Symphony II line: maximum volume with minimal amplifier effort. With a 223 mm overall diameter and 2.23 kg weight, the Symphony II 8-212 is the 8" bass driver for projects that demand Hexacone diaphragm quality, maximum bass dynamics, and true low-end extension in a single enclosure. Made in Germany, from the ETON factory.

Why the ETON Symphony II 8-212 for your project?

• Patented multi-layer Hexacone diaphragm: aerospace technology in loudspeaker construction – dimensionally stable even at mechanical Xmax ±14.2 mm, linear at 120 W just as at 1 W, without partial resonances
• BL = 9.0 Tm / fs 28 Hz (TSP) / Sd = 222 cm²: the most powerful drive and largest diaphragm area in the Symphony II line – for extension down to below 20 Hz in a bass reflex enclosure
• Xmax ±4.0 mm electrical / ±14.2 mm mechanical: enormous mechanical safety margin – level-stable, low-distortion bass reproduction even at 120 W and low frequencies below 30 Hz
• Qts 0.31 / Vas 80.0 dm³: designed for bass reflex enclosures from approx. 60–120 liters – tuned around 20–28 Hz for extension down into the infrasonic range
• 91 dB / 120 W (IEC 60268-5) / 37 mm copper voice coil / ferrite 1.00 T: the highest efficiency and highest power handling in the Symphony II line – maximum dynamics with minimal amplifier effort
• 223 mm Ø, 87 mm depth, 2.23 kg: compact 8" format for 2-way and 3-way systems with subwoofer-like low-end extension. Made in Germany.

For DIY loudspeaker projects and speaker manufacturers that demand Hexacone diaphragm technology, maximum bass dynamics, and extension down to below 20 Hz in an 8" format – the ETON Symphony II 8-212. Made in Germany, from the ETON factory.