R 909 vs Audio Physic Caldera
The Caldera's sensitivity is 90 dB against the R 909's 89 dB and its low-frequency extension 22 Hz against 35 Hz. Both share impedance (4Ω) and ways (3).
AI-generated product photo — not official manufacturer imagery.
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The Jamo R 909 is a revolutionary floor-standing dipolar loudspeaker designed and hand-built in Denmark, combining exquisite craftsmanship with advanced electro-dynamic technology. It features two massive 15-inch woofers with open magnesium baskets and lightweight air-dried paper cones, a patented Seas magnesium midrange driver with a neodymium magnet for stiffness and low weight, and a customized Scan Speak Revelator tweeter with a coated textile dome and anti-resonator plug to eliminate turbulence. The speaker employs a 43mm thick multi-ply baffle mounted on a heavy 26kg cast-iron base with stainless steel bracing to minimize resonance. This design avoids traditional box enclosures to eliminate cabinet coloration and resonances, delivering extremely fast, firm, and precise bass with superb transient response and a wide frequency range from 35Hz to 30kHz. With a sensitivity of 89dB and a stable 4-ohm load, it can be driven by high-end amplifiers and handles up to 800 watts peak power. The R 909 is intended for serious music lovers preferring a two-channel system for music listening, offering crystal clear dialogue, transparent vocals, and room-filling high-fidelity sound. It is available in striking colors such as Porsche black, Ferrari red, and Lamborghini yellow, standing 1276mm tall and weighing approximately 63kg per speaker. The speaker has received the European High-End Loudspeaker of the Year 2006-2007 award by EISA for its innovative design and sound quality.
Driver and acoustic performance characteristics
Driver configuration and enclosure design
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Caldera's sensitivity is 90 dB against the R 909's 89 dB and its low-frequency extension 22 Hz against 35 Hz. Both share impedance (4Ω) and ways (3).
The 800D's sensitivity is 90 dB against the R 909's 89 dB, its impedance 8Ω against 4Ω, and its high-frequency extension 33 kHz against 30 kHz. Both share ways (3).
The Venere S's sensitivity is 90 dB against the R 909's 89 dB and its low-frequency extension 40 Hz against 35 Hz. Both share impedance (4Ω) and ways (3).
The CS 2.7's sensitivity is 87 dB against the R 909's 89 dB. Both share impedance (4Ω), low-frequency extension (35 Hz), and ways (3).
Focal Utopia Be L
Hyperion Sound Design HPS-938W
The specs and the pairings above are open to everyone. Sign up and you get the system builder, the assistant, a compatibility check against the gear you already own, and a watch on this product so a price or pairing change reaches you.
Sign up free