Linea Callas

The Absolute Voice of Music
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Callas

Callas Diva

Grand Callas

Callas

Type

Two-way Rear Bass-Reflex Bookshelf Speaker

Finish
Lacquered Walnut, Lacquered Mahogany
Tweeter
1” Scanspeak 9700 tweeter without ferrofluid and double decompression chamber
Woofer
7” long-throw woofer with polypropylene re-cooked cone and phase plug
Sensitivity (2.83V/1m)
89 dB
Frequency response (-3 dB)
40-25000 Hz
Nominal impedance
4 Ω
Minimum impedance
3 Ω
Maximum power
100 W (without clipping)
Controls
Vocal adjustment switch
Recommended amplifier power
Starting from 10 W
Crossover frequency
2000 Hz (aprox.)
Position in the room
At least 5 cm from the rear wall. Distance between speakers 1.5 – 3 m, directed toward the listening point
Dimension

42 x 24,5 x 42 cm (h x l x p)

Net Weight
15 kg each

Callas Diva

Type

Three-way Rear Bass-Reflex floor-standing Speaker with rear firing radiation system (dipole)

Finish
Lacquered Walnut / Lacquered Mahogany
Tweeter
1” Scan-speak 9700 tweeter without ferrofluid and double decompression chamber
Mid
7” midrange with polypropylene re-cooked cone and phase plug
Woofer
8” long-throw woofer
Sensitivity (2.83V/1m)
90 dB
Frequency response (-3 dB)
30 -25000 Hz
Nominal impedance
4 Ω
Minimum impedance
3.2 Ω
Maximum power
240 W (without clipping)
Recommended amplifier power
Starting from 10 W
Crossover frequency
200 e 2000 Hz ( aprox )
Position in the room
At least 10 cm from the rear wall
Dimension

116 x 37 x 53,5 cm (HxLxP) 65 Kg each including metal base

Net Weight
Lacquered Mahogany / Lacquered Walnut

Grand Callas

Type

Three-way Rear Bass-Reflex floor-standing Speaker with rear firing radiation system (dipole)

Finish
Lacquered Walnut / Lacquered Mahogany
Tweeter
1” Scan-speak 9700 tweeter without ferrofluid and double decompression chamber
Mid
7” midrange with polypropylene re-cooked cone and phase plug
Woofer
2 x 8” long-throw woofer
Sensitivity (2.83V/1m)
89 dB/2.83 Volt/1 meter
Frequency response (-3 dB)
32 - 25000Hz
Nominal impedance
4 Ω
Minimum impedance
3.2 Ω
Maximum power
500 Watt (without clipping) for musical programs with crest factormore than 5
Controls
Low Frequency adjustment switch
Recommended amplifier power
Starting from 10 Watt RMS
Crossover frequency
200 e 2000 Hz (aprox.)
Position in the room
At least 20 cm from the rear wall
Dimension

130 x 31 x 55cm (hxlxp)

Net Weight
75 Kg each Walnut, Mahogay
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Opera’s Masterpiece

The Callas Line stands at the absolute pinnacle of Opera Loudspeakers’ production, a benchmark for quality and sonic refinement.

Relaunched in 2014 after an extensive process of research and development, it includes three models – one bookshelf and two floorstanding speakers – unanimously recognized among the most acclaimed high-end loudspeakers worldwide.

With this series, Opera transforms the home environment into a true three-dimensional and focused stage, delivering extraordinary timbre, dynamics, and detail, together with a listening experience entirely free from fatigue.

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An Iconic Name, a Sonic Legend

This line is named after Maria Callas, the celebrated soprano of American origin who became Italian by choice, a great ambassador of Italian excellence and a symbol of vocal mastery, range, and interpretative agility.

All models in the series are distinguished by elegant design, noble materials, high-end components, and an execution that transcends mere listening.

To achieve this result, every element of the project has been subjected to rigorous listening tests.

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Craftsmanship and Innovation in Harmony

Each model of the prestigious Callas Line is born from a perfect fusion of artisanal tradition – with cabinets handcrafted in our Italian workshops with meticulous attention to detail – and cutting-edge technologies.

Every model in the series is built using carefully selected fine woods and premium materials, together with components representing the state of the art in electroacoustics.

This ensures not only outstanding build quality, but also superior performance.

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Exclusive Technology, Superior Experience

A defining feature of these speakers is the rear-firing system: two additional tweeters arranged in a natural dipole configuration.

This system enriches the reflected sound field without interfering with the direct signal, preserving transient accuracy and enhancing detail, balance, and brilliance – all contributing to an amplified and immersive perception of space.

All of this is the result of the passion and dedication of the Opera team, who have created a line of loudspeakers of the highest quality: captivating to behold and enchanting to hear.

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Technical specifications

Callas

Callas Diva

Grand Callas

Type

Two-way Rear Bass-Reflex Bookshelf Speaker

Three-way Rear Bass-Reflex floor-standing Speaker with rear firing radiation system (dipole)

Three-way Rear Bass-Reflex floor-standing Speaker with rear firing radiation system (dipole)

Finish Lacquered Walnut, Lacquered Mahogany Lacquered Walnut / Lacquered Mahogany Lacquered Walnut / Lacquered Mahogany
Drivers
Tweeter 1” Scanspeak 9700 tweeter without ferrofluid and double decompression chamber 1” Scan-speak 9700 tweeter without ferrofluid and double decompression chamber 1” Scan-speak 9700 tweeter without ferrofluid and double decompression chamber
Mid 7” midrange with polypropylene re-cooked cone and phase plug 7” midrange with polypropylene re-cooked cone and phase plug
Woofer 7” long-throw woofer with polypropylene re-cooked cone and phase plug 8” long-throw woofer 2 x 8” long-throw woofer
Sensitivity (2.83V/1m) 89 dB 90 dB 89 dB/2.83 Volt/1 meter
Frequency response (-3 dB) 40-25000 Hz 30 -25000 Hz 32 - 25000Hz
Nominal impedance 4 Ω 4 Ω 4 Ω
Minimum impedance 3 Ω 3.2 Ω 3.2 Ω
Maximum power 100 W (without clipping) 240 W (without clipping) 500 Watt (without clipping) for musical programs with crest factormore than 5
Recommended amplifier power Starting from 10 W Starting from 10 W Starting from 10 Watt RMS
Controls Vocal adjustment switch Low Frequency adjustment switch
Crossover frequency 2000 Hz (aprox.) 200 e 2000 Hz ( aprox ) 200 e 2000 Hz (aprox.)
Position in the room At least 5 cm from the rear wall. Distance between speakers 1.5 – 3 m, directed toward the listening point At least 10 cm from the rear wall At least 20 cm from the rear wall
Dimension

42 x 24,5 x 42 cm (h x l x p)

116 x 37 x 53,5 cm (HxLxP) 65 Kg each including metal base

130 x 31 x 55cm (hxlxp)

Net Weight 15 kg each Lacquered Mahogany / Lacquered Walnut 75 Kg each Walnut, Mahogay

Callas

Type

Two-way Rear Bass-Reflex Bookshelf Speaker

Finish
Lacquered Walnut, Lacquered Mahogany
Tweeter
1” Scanspeak 9700 tweeter without ferrofluid and double decompression chamber
Woofer
7” long-throw woofer with polypropylene re-cooked cone and phase plug
Sensitivity (2.83V/1m)
89 dB
Frequency response (-3 dB)
40-25000 Hz
Nominal impedance
4 Ω
Minimum impedance
3 Ω
Maximum power
100 W (without clipping)
Controls
Vocal adjustment switch
Recommended amplifier power
Starting from 10 W
Crossover frequency
2000 Hz (aprox.)
Position in the room
At least 5 cm from the rear wall. Distance between speakers 1.5 – 3 m, directed toward the listening point
Dimension

42 x 24,5 x 42 cm (h x l x p)

Net Weight
15 kg each

Callas Diva

Type

Three-way Rear Bass-Reflex floor-standing Speaker with rear firing radiation system (dipole)

Finish
Lacquered Walnut / Lacquered Mahogany
Tweeter
1” Scan-speak 9700 tweeter without ferrofluid and double decompression chamber
Mid
7” midrange with polypropylene re-cooked cone and phase plug
Woofer
8” long-throw woofer
Sensitivity (2.83V/1m)
90 dB
Frequency response (-3 dB)
30 -25000 Hz
Nominal impedance
4 Ω
Minimum impedance
3.2 Ω
Maximum power
240 W (without clipping)
Recommended amplifier power
Starting from 10 W
Crossover frequency
200 e 2000 Hz ( aprox )
Position in the room
At least 10 cm from the rear wall
Dimension

116 x 37 x 53,5 cm (HxLxP) 65 Kg each including metal base

Net Weight
Lacquered Mahogany / Lacquered Walnut

Grand Callas

Type

Three-way Rear Bass-Reflex floor-standing Speaker with rear firing radiation system (dipole)

Finish
Lacquered Walnut / Lacquered Mahogany
Tweeter
1” Scan-speak 9700 tweeter without ferrofluid and double decompression chamber
Mid
7” midrange with polypropylene re-cooked cone and phase plug
Woofer
2 x 8” long-throw woofer
Sensitivity (2.83V/1m)
89 dB/2.83 Volt/1 meter
Frequency response (-3 dB)
32 - 25000Hz
Nominal impedance
4 Ω
Minimum impedance
3.2 Ω
Maximum power
500 Watt (without clipping) for musical programs with crest factormore than 5
Controls
Low Frequency adjustment switch
Recommended amplifier power
Starting from 10 Watt RMS
Crossover frequency
200 e 2000 Hz (aprox.)
Position in the room
At least 20 cm from the rear wall
Dimension

130 x 31 x 55cm (hxlxp)

Net Weight
75 Kg each Walnut, Mahogay

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