Don’t be fooled by its size, as the 2-way, bass-reflex BS 243.3 is an incredibly accomplished performer. Whether free-standing on dedicated supports or on a shelf close to a wall, the BS 243.3 is a superb all-rounder.
Crystal membrane driver
The eye-catching surface of the crystal membrane is more than just an attractive design feature. Drivers employ the Crystal Membrane (patent pending) and their design is based on ELAC’s Aluminum-Sandwich AS Technology. The crystal-shaped inverse aluminum dome is joined to the paper cone in a special gluing process to result in the desired sandwich construction. 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
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 with its transparent and effortless sound image.
The JET tweeter was developed to perfection on the basis of the famous Air Motion Transformer by loudspeaker pioneer Dr. Oskar Heil. Its operating principle is based on a concertinaed-foil membrane, driven by a strong magnet system of neodymium rods. This motor drives the air considerably faster than the pistonic motion of a conventional driver, with gains in higher sensitivity and extraordinary dynamics. 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. With a fold width of only 0.84 mm, a major requirement in the JET production is precision. To guarantee repeated accuracy and unchanging quality even with high production capacity, gluing and handling are now executed by two SCARA robots. The folding and fixing of the membrane, however, are executed by hand, since for production steps requiring extreme precision, the manual dexterity of skilled technicians is irreplaceable. Due to continuous improvement, the JET 5 tweeter creates an effortless, airy and resonance-free image up to 50,000 Hz, and with its linear frequency response is ideally suited for the reproduction of DVD-A and SACD.
Bass reflex ports
ELAC’s bass ports are a proprietary design feature. Flared on both sides, the double-flare port has been designed to minimize ventilation noises and to reduce friction losses of traditional ported cabinets.
Speaker type: 2-way, bass reflex
Tweeter: 1 x JET 5
Woofer: 1 x 150 mm AS -XR cone
Crossover frequency: 2,500 Hz
Frequency response: 41 to 50,000 Hz
Sensitivity: 87.5 dB at 2.83 v/1m
Recommended amplifier power: 30 to 150 wpc
Nominal/peak power handling: 60 / 80 wpc
Nominal impedance: 4 Ω; minimum 3.6 Ω @ 240 Hz
Binding posts: 5-way metal
Magnetic shielding: No
Cabinet finish: High gloss black or white
Accessories included: Magnetic fabric grille; rubber feet
Height: 11.2 in / 285 mm
Width: 6.7 in / 170 mm
Depth: 9.1 in / 232 mm
Net weight (each): 11.5 lb / 5.2 kg