Concentro Floorstand

Concentro S 509 Floorstanding Speaker

Concentro is synonymous with the ultimate in workmanship, design, and sound.The Concentro S509 retains all the features and benefits of the larger Concentro loudspeakers but creates its own unique visual impact.


The progressive design elements from the Concentro Series combined with the clean lines of the Vela Series to create a strong visual presence. The trapezoid basic shape, convex shaped baffle, and gently angled cabinet combine in a strikingly organic way to create a strong visual statement.


The extensive list of patented features and the revised woofer magnet system guarantee superlative sound. The effortless performance can be adjusted to suit the room acoustics. Close your eyes and you’ll instantly forget you’re listening to a compact speaker ... all you hear is music.


The Concentro S509 is available in black and white high-gloss finishes .

Meet Concentro S

High-End on High Heels.

Concentro is synonymous with the ultimate in workmanship, design, and sound. The Concentro S 507 retains all the features and benefits of the larger Concentro loudspeakers but creates its own unique visual impact.

Design Methodology

Bringing Concentro Down to Earth

The ELAC Concentro S 509: a loudspeaker with characterful design and an impressive feature set. The wraparound baffle forms the basis for magnificent acoustic performances. Combined with the gently angled cabinet, the trapezoid basic shape, and an expressive bottom assembly, complete with a ‘high-heel’ effect, the result is a powerful yet natural and elegant appearance. Its exterior is a perfect symbiosis of the extravagant design of the Concentro and the clean lines of the VELA Series. The trapezoid basic shape, wraparound baffle, and gently angled cabinet combine to convey a natural, low-key appearance. The striking bottom assembly achieves a ‘high-heel’ effect, imparting a sense of elegance and stability. Incidentally, it also guarantees an exceptionally sound footing.

Directivity Control Ring (DCR) Technology

Exchangeable Wave Guides to Optimize Listening

Since no two rooms are identical, midrange directivity can be adjusted using three exchangeable Directivity Control Rings (DCRs). This provides the ability to optimize the Concentro S Loudspeakers for the listening space. They range from more Direct (often preferred for nearfield) to more Diffuse (often preferred for farther listening positions). A patented technology uses exchangeable DCRs (Directivity Control Ring) to tailor the directional characteristics in the mid-frequency range to conditions in the listening area. The different DCRs (three aluminum DCRs are included as standard) are used to influence the relationship between direct and diffuse sound in the listening area.

Crystal Membrane Driver

Engineered for Low Distortion

Based on ELAC’s Aluminum-Sandwich AS Technology. Resembling the surface of a large crystal, the aluminum-foil stamping stiffens the aluminum dome, diminishing resonances and minimizing coloration, while improving power handling and dynamics. The voice coil design of the drivers results in an expanded frequency range, and driver surround allows for longer cone excursions for truly prodigious volume and lowest distortion, a unique engineering achievement for a driver of its size.

JET 5 Tweeter

Lightning-Fast Response and Wide Dynamic Range

Delivering true high-definition sound, ELAC’s JET 5 tweeter enthralls with its lightning-fast response and wide dynamic range, offering minimal distortion, lots of headroom, and a distinctly wider frequency range than conventional dome tweeters. The ELAC JET tweeter is one of the most legendary tweeters in the industry and has won international praise for its transparent and effortless sound image.

Height1320 mm with Spikes/Washer
Width325 mm with Spikes/Washer
Depth460 mm with Spikes/Washer
Weight42.8 kg
Type4-Way, Bass Reflex
Woofer4 × 180 mm Ø, AS cone
Low-Midrange1 x 180 mm Ø, AS-XR cone
High-Midrange1 × 50 1130 mm, Ø AL cone
Tweeter1 x JET 5c
Crossover Frequency120 | 400 | 2600 Hz
Nominal Power Handling280 W
Minimal Impedance3.2Ω bei 360 Hz
Peak Power Handling340 W
Frequency Range (IEC 268-5)22 - 50000 Hz
Sensitivity88 dB / 2.83 V/m
Suitable for Amplifiers from4 - 8Ω
Nominal Impedance
Recommended Amplifier Power60 - 600 W/channel
FinishesBlack High Gloss, White High Gloss, Walnut High Gloss
Accessories IncludedBi-Wiring-Set, Gloves, Spike-Set, Washer

Explore the Concentro Series

Step into impeccable acoustic experiences with ELAC Concentro Series. Explore more products in the series.