Description
The FS 507 VX-JET is a floorstanding speaker from ELAC, designed for Hi-Fi reproduction in stereo or high-end home cinema configurations. It stands out through the integration of the JET tweeter, the brand's emblematic technology, in a mobile version named VX-JET.
The distinctive feature of this model lies in a mechanism located at the rear of the speaker, allowing the tweeter and midrange driver assembly to be moved along a travel of up to 8 mm. This physical adjustment alters the characteristics of the sound wave, from the midrange through to the high frequencies, in order to adapt the dispersion to the configuration of the listening room. The aim of this system is to achieve a uniform and precise soundstage, regardless of the listening distance or position within the room.
The rest of the design follows ELAC's usual principles: carefully developed woofers and midrange drivers, a crossover built from quality components, all housed in a wooden cabinet with a carefully finished exterior.
This speaker is aimed at discerning Hi-Fi enthusiasts, particularly those dealing with listening rooms with pronounced acoustic constraints or variable listening positions, since the tweeter adjustment offers a margin for fine-tuning directly on the speaker rather than through acoustic treatment of the room.
What to check before buying used
The retraction mechanism for the JET tweeter and midrange, located at the rear of the cabinet, is worth testing over its full 8 mm travel: check that it slides without sticking or excessive play and that it locks firmly once the chosen position is set. Also inspect the cabinetwork (veneer, edges, speaker plinths) and the woofer surrounds, which can harden or crack with age. Checking the crossover connections at the rear completes the inspection.
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