The name
Celestion has been synonymous with loudspeakers since 1924 ans is today held in
high esteem throughout the world by sound engineers and music lovers alike.
The high
fidelity loudspeakers detailed in this
article the latest in the famous "Ditton" range and is the result of extensive research and development
carried out in the Celestion laboatories.
Celestion
quality is evident throughout the new Ditton 120 and the unrivalled and
exclusive Celestion features which have made Celestion "Dittons"
world famous are incorporaed into this new system.
The
upper register from 3 kHz to 15 kHz is reproduced faithfully by the renowned HF
1300 treble unit, many thousands of which have been supplied to manufactures
for inclusion in monitoring systems. This "pressure" type unit is 1½" (38 mm) diameter and has an
exceptionally smooth response due to careful attention to phase correction and
acoustic damping. The very low mass of
the diaphragm assembly and the high magnetic flux permit transient response ofa
high order. The small area of the diaphragm provides an excellent polar
radiation pattern and ensures a highly satisfactory stereophonic image.
The
middle-bass register is reproduced by a sophisticated unit of very high
quality. The diameter is 5" (120 mm) and a linear diaphragm excursion of
up to ½" is possible ensuring
correct reproduction of bass notes at all volume levels. The diaphragm assembly
is controlled by a massive magnet system having a flux of 50,000 Maxwells which
ensures high efficiency and optimum damping.
The third
radiator is a new version of the exclusive Celestion auxiliary bass radiator
now known universally as the ABR. This device ensures improved reproduction of
low bass notes even with comparatively small enclosure dimensions. The ABR is
operative at the lowest part of the register from 35 Hz to 70 Hz and since the
work is shared between the two bass diaphragms efficiency is increased and
distortion reduced to a vry low order; in short, the ABR ensures true bass.
The
electrical system is integrated by an inductance-capacity frequency dividing
network which has been meticulously designed to provide a level response.
The
Celestion Ditton 120 reproduces the full audible range and is suitable for
connection to virtually all high quality amplifiers. Where cost and size figure the Ditton 120
provides outstanding value and performance. The appearance will please the most
fastidious and the smooth and effortless sound quality will delight the musican
and connoisseur alike.
The
appearance and finish of the 120 enclosure is excellent. By using a single
sheet of veneer to completely enclose the four sides of the cabinet there is a
joint running of the cabinet there is a joint running along one edge only;
conseguently it will look equally good in whatever position it is placed. The
rear is neatly finished with connections provided by means of two colour-coded
screw terminals.
Drive Units
and cabinet
1. Treble
Unit Type HF 1300, Phase Corrected, Acoustically Damped, Studio Standard ± 2 dB
2. Mid-Bass
Unit, Ultra Compliant Suspension, High Flux (50,000 Maxwell) Magnet
3. Auxiliary
Bass radiator (known as ABR) maintains output over 35 Hz - 70 Hz band
4. Anechoic
wedges eliminate standing waves (concealed), low loss crossover network
Specifications
Response: 35 Hz to 15 kHz
Max
Input: 20 watts (DIN 45 500)
Crossover: Low loss L/C network at 3,000 Hz
Impedance: 4 - 8 Ω
Treble
Unit: 38 mm (1½") Pressure Type
Mid-Bass
Unit: 120 mm (5") Long throw
Auxiliary
Bass: 120 mm (5") 15 Hz Resonance
Finish: natural teak or walnut
Dimensions: 17¼" x 9" x
7¾"
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