Opera Loudspeakers Grand Callas
Image source — © Opera Loudspeakers
Model name
Grand Callas
Frequency Response low +/- 3dB (Hz)
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Frequency Response high +/- 3dB (Hz)
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Sensitivity (dB at 1 W/1m)
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Impedance (Ohms)
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Power amplifier requirements (W)
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Has internal amplification
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Internal amplification power (W)
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Size (sm)
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Weight (kg)
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Official link
Opera Quinta has a closed acoustic design, divided into three sections. The woofer section is loaded with its own volume of 40 liters. The midrange section is insulated with high-density MDF walls and damped with polyurethane seals. The HF section has its own small volume in the upper part of the speaker. The speaker body is made of MDF with a thickness of 30 mm, has rounded corners of the front panel for better sound dispersion, and is covered with high-quality leather.
Opera Seconda SE has a 2.5-way design. The woofer section is built on custom drivers from Scanspeak with a diffuser made of aluminum coated with mastic to dampen the resonances of the material.
The Grand Mezza has a 3-way design with a front-mounted bass reflex. The woofer section is built on two custom speakers from Seas with a polypropylene diffuser with a diameter of 120 mm. A midrange section on a single driver of a similar design. All drivers are mounted on a cast basket, characterized by increased rigidity.
The Callas Diva floor-mounted three-way speaker system is equipped with proprietary Cross Link Dipole technology, which allows you to create a stereo picture by reflecting sound waves from the back wall of the listening room.