ZELLATON REFERENCE ULTRA

Controlled Bass

Three 220 mm full-cone woofers provide substantial cone area for low-frequency reproduction, helping the REFERENCE ULTRA deliver deep bass extension and dynamic impact. With a frequency response reaching down to 22 Hz, the system is designed to reproduce the weight and scale of demanding musical passages while maintaining a balanced presentation.

High Sensitivity and Dynamic Performance

With a sensitivity of 91 dB (1 W/1 m), the REFERENCE ULTRA is designed to deliver strong acoustic output from a given amplifier power. Its nominal impedance of 4 ohms should be considered when selecting a compatible amplifier to ensure stable operation and optimal performance.

Precision Engineering and German Craftsmanship

ZELLATON combines decades of loudspeaker-development experience with modern engineering techniques and carefully manufactured components. The ULTRA diaphragm is produced using a detailed, largely manual process, reflecting the company's focus on precision, consistency, and natural musical reproduction.

Impressive Scale and Refined Design

Measuring 131 cm tall and weighing approximately 135 kg per speaker, the REFERENCE ULTRA is a substantial high-end loudspeaker built for dedicated listening spaces. Its large enclosure accommodates the five-driver system while giving the model a commanding presence in a premium stereo setup.

The ZELLATON REFERENCE ULTRA combines advanced diaphragm technology, an extensive five-driver configuration, and deep bass capability in a meticulously engineered floorstanding design. With its wide frequency response and high sensitivity, it is built for listeners seeking a large-scale, detailed, and natural music reproduction experience.

Key Specifications

• Type: 3-way floorstanding loudspeaker
• Frequency response: 22 Hz – 40 kHz
• Sensitivity: 91 dB (1 W / 1 m)
• Impedance: 4 Ω
• Tweeter: 1 × 33 mm full-cone
• Midrange: 1 × 180 mm full-cone midwoofer
• Woofers: 3 × 220 mm full-cone
• Number of drivers: 5
• Dimensions (H × W × D): 131 × 45 × 71 cm
• Net weight: Approximately 135 kg per speaker
• Diaphragm technology: ZELLATON ULTRA three-layer sandwich construction
• Manufacturing: Handmade in Germany