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ELAC BS 243 LIMITED EDITION

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ELAC BS 243 LIMITED EDITION - JET III tweeter
  • 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  : A LIMITED EDITION

For fans of special editions, ELAC is producing two thousand examples of this excellent loudspeaker, which has come out on top in tests worldwide and won numerous international prizes and awards, and also incorporated some additional technical refinements.

The new upmarket version with its high-gloss cherry wood cabinet exudes pure elegance in design and sound quality. But it is not only the outside of the limited edition that has been enhanced.

The network has been equipped with top-class components and the internal wiring has been carried our with Van den Hul cables.

Specifications
Dimensions H × W × D
285 × 170 × 220 (232) mm Details
Gross Volume
11.2 l
Weight
5.5 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
cherry high gloss
black high gloss
ELAC BS 243 Limited Edition brochure

Treble Unit

ELAC BS 243 Limited 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 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 Hi-Res Audio music.

ELAC JET DC (Dispersion Control) ring
ELAC JET DC (Dispersion Control) ring
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.

All loudspeakers of the 240 series are supplied with the JET Dispersion Control as an accessory.

 

Midbass Unit

TT 150 AS-XR midbass used in: BS 243, CC 241, FS 247 and FS 248.

All woofers and midrange drivers of the 240 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 Crystal membrane - TT 150 AS-XR midbass driver cuttrough
ELAC Crystal membrane - TT 150 AS-XR midbass driver
 
 
 
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