ZENSOR TECHNICAL WHITE PAPER
ZENSOR 1 ZENSOR 5 ZENSOR 7 INTRODUCTION Since 1983 bit by bit DALI has become synonymous with manufacturing and marketing speakers of the highest standard at any price point. The road has been long, and our R&D engineers have spent thousands of hours refining products and technologies in their relentless search for improving the best. And they still do so every day.
INTEGRATES EASILY… The DALI ZENSOR series has been fully designed and developed at DALI’s headquarters in Denmark The idea with DALI ZENSOR was to introduce genuine - but affordable - hi-fi in a compact and stylish design. DALI has a tradition of applying in-house refined technology in multiple products across the entire range.
SOUND DESIGN PRINCIPLES The primary purpose of any loudspeaker is to convert the electrical signal from the amplifier into a realistic audio experience in the listening room. Any distortion or coloration of the original signal by drivers, enclosure, crossover, or other parts of the speaker is to be considered a degradation of the sound. The ZENSOR series – just as other DALI loudspeakers – have been designed in accordance with our fundamental acoustic and electro-acoustic principles.
DALI ZENSOR 5 impedance 50.0 180.0 Ohm Deg 40.0 108.0 30.0 36.0 20.0 -36.0 10.0 -108.0 0.0 20 50 100 200 500 1k 2k Hz 5k 10k 20k -180.0 As an example of our commitment to making ’amplifier-friendly’ speakers, the impedance of the ZENSOR 5 – just as the rest of the series - never drops below 5Ω, a stable load at a level which benefits smaller amplifiers and at the same time allows bigger amplifiers to shine.
Cut-through showing the 7” woofer developed for the ZENSOR series. WOOFER At DALI we believe strongly in reproducing the recorded signal. No more, no less… Consequently we believe in the necessity of reproducing not only the frequency contents in the signal, but also the dynamics in all its aspects – ranging from subtle micro details to high level bursts. A larger cone area allows the same sound pressure level to be generated utilizing a lower cone excursion.
The 4-layer light-weight voice coil design is applied to create a high motor force, enabling both powerful and precise sound reproduction. With every product launch over the last years DALI engineers have managed to put a little extra engine power into the drivers at any given price point. This is all for the benefit of uncompressed sound reproduction, even during very dynamic passages in the music.
Ultra-light soft dome tweeter developed for the ZENSOR series ensures effortless and unbiased reproduction of the finest details. TWEETER Obviously the tweeter must be able to render high frequencies with high accuracy. This means very short excursions, but at high speed, - or rather – with high acceleration. Consequently a low mowing mass and a strong motor is needed. The ZENSOR tweeter is constructed on the basis of an ultra light-weight weave fabric.
In the right light this fine fabric will reveal the soft felt damping on top of the pole piece. This damping material eliminates unwanted reflections that may occur from a traditional flat-surface pole piece, applied in simpler tweeter constructions. This is another example of the meticulous care for construction details that – altogether - allow an unfiltered reproduction of all the details in the music.
CABINET The cabinets meet the expectations - and then some - in the DALI ZENSOR series. CNC machined MDF board, dressed in a top-of-theclass laminate, forms the principal of the speaker. The floor-standing models feature strong internal bracing to reduce structural resonances. In order to optimize timing the ZENSOR is fitted with acoustic damping material internally along the sides, top and bottom - but not on the rear side of the front baffle.
DALI ZENSOR 1 placed in a stereo setup. This speaker features an integrated wall bracket to also facilitate mounting directly on the wall. VERSATILITY IS THE KEY… With speakers ranging from the compact ZENSOR 1 – H: 274 x W: 162 x D: 230 mm – to the solid ZENSOR 7 - H: 978 x W: 257 x D: 311 mm – the DALI ZENSOR family offer a speaker for most environments. Whether the listening room is small or large there is a solution to be found.
ZENSOR SERIES TECHNICAL SPECIFICATIONS ZENSOR 1 ZENSOR 5 ZENSOR 7 ZENSOR VOKAL 53 - 26.500 43 - 26.500 40 - 26.500 47 - 26.500 Sensitivity [2.83V/1m] [dB] 86,5 88,0 90,0 88,5 Nominal Impedance [ohms] 6 6 6 6 106 108 110 109 25 - 100 30 - 150 30 - 150 30 - 120 Crossover Frequencies [Hz] 2.900 2.400 2.400 2.
