Zellaton REFERENCE ULTRA
Image source — © Zellaton
Model name
REFERENCE ULTRA
Frequency Response low +/- 3dB (Hz)
22
Frequency Response high +/- 3dB (Hz)
40000
Sensitivity (dB at 1 W/1m)
91
Impedance (Ohms)
4
Power amplifier requirements (W)
N/A
Has internal amplification
N/A
Internal amplification power (W)
N/A
Size (sm)
131 x 45 x 71
Weight (kg)
135
Official link
The special feature of the model is that the housings are absolutely tolerant to resonances, and there are special drivers. The weight of one speaker is 300 kg, 11’ woofers are used, frequency response starts from 20 Hz. The amplification requirements are gentle – only 50 watts.
The REFERENCE MkII is equipped with a 40mm treble, a 180mm midrange driver, and three 220mm bass drivers. Acoustics operate in the frequency range from 22 Hz to 40,000 Hz.
The model has aluminum cabinets with a vibration suppression system, its own drivers (a 1.6' tweeter, a 7' midrange driver and 9' woofer diffusers are all made of a complex sandwich, patented back in 1930 and still being upgraded).
The ZELLATON Plural Evo sports 30 mm tweeters, 180 mm midrange speakers, and a pair of 280 mm bass speakers, all designed by the company itself. ZELLATON acoustics have always been praised for their exceptional transparency, well, the described speakers clearly exceeded all the wildest expectations in this regard.
The floorstanding speakers are equipped with a 30 mm soft dome tweeter and a 220 mm woofer/midrange driver with a conical sandwich diffuser.