The Celeste IV
Combines attractive, functional styling with the latest developments in loudspeaker engineering, for which KEF is renowned.
The result is a loudspeaker which offers abundant volume level for dance and popular music, as well as accurate reproduction and a precise and stable stereo image for the discriminating music lover.
Celeste IV Features High power handling capacity, Compatible with amplifiers delivering 10 or more Watts per channel, High volume level capability, Interchangeable grille covers: available in black, brown, beige, blue, red, green or grey.
Celeste IV Specifications
| Frequency range | 70Hz to 20kHz ± 3dB at 2m on measuring axis ( -10dB at 50Hz and 25kHz) |
| Directional characteristics | Horizontal: within ± 2dB of axial response up to 10kHz for ± 20º up to 20kHz for ± 5º vertically up to 12kHz for ± 20º horizontally |
| Maximum output | 103dB spl on programme peaks under typical listening conditions |
| Character sensitivity level: | 86dB spl at 1m on reference axis for pink noise input of 1W |
| Distortion | Second harmonic: less than 2% from 20Hz to 150Hz less than 1% from 150Hz to 20kHz Third harmonic: less than 2% from 20Hz to 50Hz Measured at 1m on reference axis at man spl of 90dB, anechoic conditions |
| Enclosure type | Closed box |
| Programme rating | 50W |
| Maximum continuous sinusoidal input | 20V rms from 20Hz to 2kHz reducing to 10v rms from 2.5kHz to 20kHz |
| Minimum amplifier requirements | 10W |
| Nominal impedance | 8 ohms |
| Resonance frequency | 68Hz |
| Total system Q | 0.7 |
| Internal volume | 17 litres |
| Finishes | Choice of black or brown plinth and top with black or brown grille fabrics as appropriate. Beige, blue, red, green or grey grille covers available as optional accessories. |
| Weight | 8.1kg (18lb) |
| Dimensions | 524 x 265 x 230mm |
Celeste IV Benefits
The addition of quality loudspeakers to an existing rack system - or even a portable radio - will dramatically improve sound quality.
As loudspeaker specialists, KEF concentrate on the design and production of high fidelity loudspeakers, and have employed the latest computer aided analysis techniques to develop CELESTE IV.
With an amplifier output of as little as 10 Watts per channel, CELESTE IV will produce enough volume to fill a generous sized room. With larger amplifiers, considerably louder volume levels can be achieved whilst maintaining realistic tonal quality.
KEF’s computer aided design approach has enabled the broadest frequency response to be achieved with the optimum efficiency and from a surprisingly small enclosure.
CELESTE IV is a two-way system employing a 200mm bass unit and a 25mm soft dome HF unit. Of higher than average efficiency, CELESTE IV is capable of achieving output levels in excess of 100dB spl.
To allow the sound to reach the listener directly without troublesome reflections from walls, floor or ceiling the drive units are arranged within the 17 litre enclosure so that the full frequency response is enjoyed when the loudspeakers are positioned between 12” and 40” from the floor.
An optional stand, the UL 40, allows the speaker to be conveniently and elegantly positioned.
CELESTE IV can be easily matched to any home decor scheme with the moulded base and top available in either brown or black. In addition, interchangeable grille sleeves are supplied in a choice of seven colours.