ELAC FS 249 User manual

FS 249: When striving for perfection, you must break new ground
Experience music, be right in the middle
of it, soak up the atmosphere, “see”, feel
and sense each instrument, each voice –
this is how speakers should reproduce
music.
In order to reproduce music authentically,
vividly and naturally, the E AC R&D
engineers have paid special attention to
three-dimensional sound radiation
patterns. Their aim: to acoustically
“energize” the room in a consistent and
harmonised way.
To this end, E AC has developed new
transducer systems for the bass and
midrange, and has calibrated the
crossover frequency to optimise sound
radiation characteristics across the entire
frequency range. The result is a uniquely
precise and musical three dimensional
soundscape.
Technica features and
characteristics:
•The design of the new patent-
pending woofer is based on the
renowned E AC aluminium
sandwich technology which, by
combining the different resonant
characteristics of cellulose and
aluminium, leads to a marked
reduction in harmonic vibrations.
•The crystal-like surface of the new aluminium membrane catches both the eye & the ear. Harmonic vibra-
tions are significantly reduced by the angled crystaline surface structure. In addition, by using a press
formed structure, the membrane is more rigid and has lower distortion which not only prevents partial vi-
brations in the crossover zone but also reduces harmonic distortion.
Due to the high rigidity of the
aluminium membrane, it is
now possible to attach the
solenoid not only to the cone
neck but also directly to the
aluminium membrane. This
significantly extends the
cone’s bandwidth right across
the frequency range giving a
noticeably more even &
continuous frequency
response.

•The FS 249 also stands out with a newly
developed mid-range speaker that is equipped
with a dual-wave (full-roll) absorbent fabric
suuround. The specially designed surround
absorbs & dampens lateral cone oscillations
ensuring exceptionally pure output in the very
sensitive mid-range area. This endows vocals in
particular with a smoothness & articulation which
is truly riveting.
•In the treble, E AC uses its class leading JET tweeter, recognised worldwide as one of the very finest available.
Its internal design has been reworked, which has resulted in an even more linear frequency response and
improved harmonic distortion.
•A key new feature is an acoustic tuning element made from
porous foam called the “JET DC” (JET Dispersion Control)
This allows the treble to be adapted to particular room
settings – especially for hall-like spaces with a lot of glass,
wood floors, etc. The JET DC incorporates both a
directional characteristic as well as a frequency response
correction, so that instruments and voices can be
pinpointed precisely - even in difficult room settings with
many reverberant surfaces.
•Each FS 249 is equipped with 2 bass reflex tubes. One radiates sound toward the back, one downward onto
the base plate. This arrangement allows for deeper bass tuning and can also be used as an acoustic low-pass
filter. The rear projection bass reflex tube comes closed off with a bass control plug . By removing it, the bass
reproduction can be intensified.
•The FS 249’s beautifully built cabinet features massive internal bracing to minimise resonances.
•High-quality E AC bi-wiring terminals are used with separate connections for
bass and middle/treble drivers. The angled adapter terminations are easily
accessible and are especially suitable for larger cables (16 mm²) and high-
quality spade terminals (e.g. WBT products).
•The FS 249 is equipped with an elegant base plate and easily adjustable
E AC spikes/rubber feet. For acoustic reasons, since one of the bass reflex
openings radiates sound downwards, the base plate must be securely fitted
before use.
Finishes: Mocha, Cherry Veneer, Black High Gloss
Specifications ELAC FS 249
Dimensions
Height (with/without base plate/spikes)
Width (with/without base plate)
Depth (with/without frame/base plate)
1060/1118/1147
200/260
308/323/368 mm
Crossover Frequency 500/3200 Hz
Weight 31 kg Nominal Power handling 200 W
Type 3-way, bass reflex Peak Power Handling 250 W
Woofer 2 x 180 mm AS-XR cone Frequency Range 28 - 50000 Hz
Midrange 140 mm AS-XR cone Sensitivity 89 dB/2.8V/m
Tweeter JET III (?) Nominal impedance 4 ohms
Rec. Amplifier Power at nominal
impedance
30 – 400 W / Channel Minimum impedance 3.0 ohms at 120 Hz