Opera Callas Diva Floorstanding Speakers; pair

The Opera Callas Diva brings the performance of Opera's flagship Grand Callas into a more compact floorstanding design, reaching down to 30Hz with 90dB sensitivity. This three-way speaker features premium Scan-Speak drivers throughout, including an 8-inch long-throw woofer, 7-inch midrange, and the signature rear-firing dipole system with dual out-of-phase tweeters for an immersive, three-dimensional soundstage.

Key Features of the Opera Callas Diva

• 8" Scan-Speak Long-Throw Woofer: Aluminum cone with rubber surround in reflex-loaded configuration delivers deep, controlled bass to 30Hz.
• 7" Midrange Driver: Annealed polypropylene cone with phase plug and 12mm peak-to-peak linear displacement for exceptional vocal clarity.
• Scan-Speak 9700 Tweeter: Premium 1-inch dome tweeter with symmetrized magnetic circuits and flux stabilization rings.
• Natural Dipole Rear Radiation: Two rear-firing tweeters configured out-of-phase create a natural dipole effect for expansive soundstage depth.
• Adjustable Bass Response: Closeable reflex port allows fine-tuning for different room acoustics and placement options.
• Shaped Front Panel: Optimized geometry enables "close listening" from approximately 1.5 meters for intimate musical experiences.

The Callas Line from Opera Loudspeakers

Opera's Callas series represents the pinnacle of their speaker design, named after the legendary soprano Maria Callas. Each Callas speaker features the distinctive rear-firing dipole system: two additional tweeters arranged in a natural dipole configuration that adds depth and spatial information to the soundstage. The result is a listening experience that transcends typical box speakers, approaching the openness of panel designs while maintaining the dynamic punch of traditional cone drivers.

Three-Way Driver Topology

The Callas Diva employs a true three-way configuration with dedicated drivers for bass, midrange, and treble. The 8-inch Scan-Speak woofer features an aluminum cone and long-throw motor structure, loaded in a reflex enclosure for extended bass response. The 7-inch midrange uses an annealed polypropylene cone with phase plug, offering 12mm of linear excursion for distortion-free reproduction of vocals and instruments. The Scan-Speak 9700 tweeter handles frequencies above 2kHz with symmetrized magnetic circuits eliminating flux modulation distortion.

Natural Dipole Rear Radiation System

Behind the Callas Diva, two additional tweeters fire rearward in a natural dipole arrangement. These tweeters are wired out of phase with each other, creating a figure-eight radiation pattern that mimics the behavior of planar and electrostatic speakers. An independent crossover filter allows adjustment of the rear tweeter level to optimize the soundstage for different room acoustics and listener preferences. The result is a three-dimensional presentation with depth, width, and height that conventional forward-firing speakers struggle to achieve.

Room Adaptation and Placement

The Callas Diva offers remarkable flexibility in room placement. The shaped front panel enables nearfield listening from as close as 1.5 meters, while the adjustable rear tweeters and closeable bass port accommodate everything from small studios to larger living spaces. For rooms with reflective rear walls, reducing the rear tweeter level tames excess ambience. In well-treated spaces, running them at full level maximizes the dipole effect for concert-hall depth.

System Matching Recommendations

With 90dB sensitivity and 4 ohm nominal impedance (3.2 ohm minimum), the Callas Diva rewards quality amplification. The speakers handle up to 240 watts, making them suitable partners for everything from refined tube amplifiers to high-current solid-state designs. Consider amplifiers from Unison Research, Rogue Audio, or Primare to maximize the Callas Diva's potential.

Explore the Opera Callas Series

The Callas Diva is the compact floorstanding option in Opera's flagship Callas lineup. Looking for a different form factor? Explore the full series:

• Opera Callas - Stand-mount speaker with the same rear dipole technology in a bookshelf design.
• Opera Grand Callas - Full-size flagship floorstanding speaker with the ultimate expression of Opera's dipole technology.

THE LISTENING ROOM DIFFERENCE

We're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on trust, not hype. Whether you're visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don't just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection.

Opera Callas Diva Specifications