ELAC BS 243 Black Edition

ELAC BS 243 Black Edition black high gloss finish

TT150AS-XR: difuzor midbass cu membrana sandwich hartie-aluminiu "Crystal"
JET III: tweeter cu tehnologie Air-Motion-Transformer (folded foil)
DC ring (JET Dispersion Control): inel pentru controlul dispersiei ce se monteaza in jurul tweeterului JET

BS 243 Black Edition: Eine Box wie ein guter Espresso

Klein, stark, schwarz. Als Regalbox konzipiert kann sich die BS 243 Black Edition montiert auf einem Ständer mit jedem ausgewachsenen Standlautsprecher messen.

Specifications

Dimensions H × W × D

285 × 170 × 220 (232) mm

Details

Gross Volume

11.2 l

Weight

5.2 kg

Principle

2-ways, bass reflex

Woofer
Bass Ports

1 × 150 mm AS-XR cone

1 × 45 mm (with Bass Control Plug)

Tweeter

1 × JET III (mag. shielded)

Recom. Amplifier Power
at Nominal Impedance

30-150 W / channel

Crossover Frequency

2,700 Hz

Sensitivity

87 dB / 2.83 V / 1 m

Nominal Impedance
suitable for amplifiers (from ... to)

4 Ohm
4 ... 8 Ohm

Minimum Impedance

3.6 Ohm / 240 Hz

Frequency Range
acc. to IEC 268-5

41 ··· 50,000 Hz

Nominal / Peak Power Handling

60 / 80 W

Finishes

black high gloss

See gallery

Treble Unit

JET III used in the 240 Black Edition Series.

ELAC BS 243 Black Edition JET III tweeter

The ELAC JET tweeter is one of the most legendary tweeters in the hi-fi trade and has won international renown with its unusual transparent and effortless sound image.

The JET tweeter was delveloped to perfection on the basis of the famous 'Air Motion Transformer' by loudpseaker pioneer Dr Oskar Heil. Its principle: a concertinaed foil membrane is driven by a strong magnet system of neodymium rods.

This 'motor' drives the air considerably faster than the conventional pistonic technique. High sensitivity and extraordiary dynamics are the result. Due to continuous improvement, the JET III tweeter now creates an effortless and airy 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.

Note: The loudspeakers of the 240 BE Series are supplied with the JET Dispersion Control as an accessory. The ELAC "JET Dispersion Control DC" is a flat ring made of open-cell rubber foam which is mounted around the JET orifice with four clasps (or with adhesive tape). The JET DC results in a broadband reduction of about 0.5 dB of the radiated sound level nearly independent of frequency. The JET DC is best suited for rooms with little sound absorption at high frequencies, especially for rooms with large windows without curtains or with a smooth floor without a carpet.

Midbass Unit

TT 150 AS-XR black anodized diaphragm midbass used in: BS 243 BE, FS 247 BE and FS 248 BE.

The woofers drivers of the 240 BE series contain the new "Crystal Membrane" (patent pending) and their design is based on the well-known "Aluminium-Sandwich AS Technology" which was developed by ELAC a couple of years ago. The crystal-shaped inverse aluminium dome is joined to the paper cone in a special glueing process resulting the desired sandwich construction.

The stamping of the aluminium foil looks like the surface of a large crystal, this is where the term "Crystal Membrane" come from. This stamping stiffens the aluminium dome considerably which diminishes the membrane-internal resonances resulting in less sound coloration and additionally improves the large signal behaviour noticeably.

The voice coil is not only - like usually - joined to the neck of the paper cone but also to the bottom of the aluminium dome. This design results in the expansion of the transmission range of the respective woofers or midrange drivers by nearly an octave. Therefore the abbreviation "XR" (eXtended Range) has been introduced.

ELAC BS 243 Black Edition Crystal midbass - TT 150 AS-XR midbass driver

www.elac.ro

Photos:

BS 243 BE reviews: