DECA
DECA: The All-in-One Bookshelf Loudspeaker with Integrated Bandpass Subwoofer
Introducing the DECA, our latest high-end bookshelf loudspeaker meticulously engineered for audiophiles seeking exceptional sound quality and versatility. This innovative 3-way loudspeaker combines advanced acoustic technology with a sophisticated design to deliver a powerful audio experience.
The DECA features an integrated bandpass subwoofer that provides deep bass response down to 33.5 Hz (-3dB), making it an ideal choice for those who desire authentic low-frequency energy without distortion. The unique design incorporates three specialized drive units, including the acclaimed ATTO low-mid driver and the ATTO compression drivers. This setup ensures a seamless transition across the frequency spectrum while maintaining clarity and precision.
DECA not only looks stunning but also minimizes unwanted vibrations and resonances. The elegantly integrated horn design enhances directivity, ensuring sound is projected accurately, even in challenging acoustic environments.
A standout feature of the DECA is its bandpass reflex port, which effectively reduces second harmonic distortion by approximately 20 dB and third harmonic distortion by about 30dB. This design choice results in a remarkably clean and powerful bass output, providing an immersive listening experience free from the muddiness often associated with lesser loudspeakers.
The DECA requires a dedicated loudspeaker management system, such as our 3960 DSP, allowing for tailored amplifier matching for each frequency band. Equipped with a high-quality 3 channel integrated amplifier, the ATTO - A provides ample power to drive the drivers effortlessly. Complementing this is the Danville Greywolf DSP, a state-of-the-art platform that offers unparalleled performance compared to traditional COTS crossovers. The SHARC ADSP-21565 DSP is the most powerful crossover ever implemented in an embedded design, operating at 192kHz with a remarkable S/N ratio exceeding 123dB.
Proudly designed and manufactured by Lange Loudspeakers SA in Switzerland, the DECA represents the pinnacle of high-end audio innovation. Elevate your sound experience with the DECA bookshelf loudspeaker, where deep bass meets precision engineering.
Technical features
Fully active concept, 2 x 125W MF & HF plus 1 x 500W LF
Tree-Way 33,5 Hz to 28 kHz frequency range
Wood finish, various veneer available - All aluminum front area
Aluminum Diaphragm, optimized geometry that achieves metamaterial performance
Custom designed high frequency driver
Band-Pass Low Frequency enclosure with long excursion 8” driver
Coherent Coverage on Stated Frequency Response
Suitable applications
High-End Home Entertainment
Studio Monitoring
Home Cinema – THX/Dolby Atmos
Description
3-Way. including a Band-Pass Box System
Net weight & Dimensions - 12,5 kg – 380* mm depth, 250 mm width, 400 mm height
Wood cabinet, various veneer available
Drive units
1x Lange 1705-XA LMF Driver
1 x Lange 1425-8A HF Driver
1 x High Power 8” subwoofer
Frequency range - 33,5Hz to 28kHz (+/-1,5 dB from reference axis)
Sensitivity - 89 dB (on axis at 2.83Vrms at 1m)
*Add 25 mm for connectors
High-Performance Compression Driver in the DECA
The FEMTO features an exceptional compression driver that delivers an impressive frequency response, ranging from 1200 Hz to 28 kHz. This driver utilizes an ultra-light magnesium dome and is equipped with a 3-channel circumferential phase plug, specifically engineered for optimal performance within our loudspeaker systems.
With a magnetic induction of 15,000 gauss and a 0.5 mm Xmax, this driver ensures high efficiency and low distortion, making it ideal for audiophiles seeking clarity and detail in their sound reproduction. The relatively large horn integrated into the FEMTO design enhances controlled coverage, providing precise sound dispersion even at frequencies beyond the human hearing threshold.
This combination of advanced materials and innovative engineering makes the FEMTO's compression driver a key component in achieving a superior audio experience, ensuring that every note is reproduced with accuracy and fidelity.
Precision Engineered Low-Mid Driver for Superior Sound
At Lange Loudspeakers SA, our ATTO loudspeaker features an in-house designed low-mid driver that exemplifies high-performance engineering. The driver’s CNC-manufactured chassis is meticulously crafted to reduce reflections from the loudspeaker frame back to the diaphragm, enhancing sound clarity
Our driver design incorporates a comprehensive array of refinements, ensuring reliable operation and simplified manufacturing. By addressing strict manufacturing tolerances, we optimize performance across our loudspeaker systems. The slug-type magnet is engineered for optimal efficiency, minimizing reflections towards the diaphragm thanks to its compact design and promoting superior coil cooling.
Strategically placed ventilation holes in the coil support minimize mechanical resistance (Rms) and enhance operational efficiency. The diaphragm is crafted to maximize frequency response, utilizing a transitional geometry instead of a traditional dome or cone shape. Constructed from anodized aluminum and paired with nitrile suspensions, the design effectively reduces Mms tolerance and maintains precision.
The absence of a dust cap further ensures minimal tolerances, while the CNC-manufactured frame facilitates precise component centering during production. This geometry effectively dissipates heat from the coil and promotes smooth acoustic energy flow, resulting in minimal reflections and superior sound reproduction.