ELAC Line BS 403 Bookshelf Speakers
Although it marks the entry point into the Line 400, the compact dimensions of the BS 403 belie its exceptional performance capabilities. In small to medium-sized rooms, this 2-way, bass-reflex design delivers extraordinary sound that will leave even the most critical listeners enthralled.
Features...
Crystal membrane driver
The eye-catching surface of the crystal membrane is more than just an attractive design feature. The drivers employ the Crystal Membrane, and their design is based on ELAC’s Aluminum-Sandwich Technology. By 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 superior volume and low distortion, a revolutionary engineering achievement for a driver of its size.
JET 5 tweeter
The ELAC JET tweeter is one of the most legendary tweeters in the industry and has won international praise with its transparent and effortless sound image. Due to many additional design changes, like an improved new neodymium magnet system, even higher efficiency, higher sound pressure levels and frequency response up to 50 kHz was achieved.
The core of the JET tweeter is the folded foil membrane. The fold width is only 0.84 mm and even still the folding and fixing of the membrane being executed by hand. Due to continuous improvement, the JET 5 tweeter creates an effortless, airy and resonance-free sound image up to 50,000 Hz.
Down-firing port
For a more flexible speaker placement and to minimize ventilation noise, the bass reflex port is directed to the floor, exiting the bottom of the speaker cabinet in a down-firing configuration.
Specifications...
- Recommended amplifier power: 40 to 200 wpc
- Nominal/peak power handling: 70 / 100 wpc
- Enclosure Type : 2 Way Bass Reflex
- Frequency Response: 41Hz to 50kHz
- Nominal Impedance: 4 Ohms
- Sensitivity: 86 dB at 2.83 v/1m
- Tweeter: JET 5
- Woofer: 150 mm AS -XR cone
- Binding Posts: 5 Way Metal
Find out more here - ELAC Line 400 Series