Model 304
The new KEF Model 304 is a compact free standing system fitted with two 200mm bass units and a 25mm soft dome HF unit.
The drive units are mounted on the baffle in a vertical line. A novel crossover network allows both bass drive units to operate in parallel at low frequencies, whilst in the middle frequencies the input to the lower unit is progressively attenuated so that only one 200mm unit is radiating at the upper crossover frequency. This arrangement provides maximum power handling capacity and efficiency at low frequencies and the optimum vertical polar characteristics in the crossover region, to provide a stable stereo image over a large listening area.
An optional stand (ULS2) raises the system to the optimum height for listening, and minimises the coloration due to floor reflections.
Model 304 Specifications
| Dimensions | 680 x280 x 315 mm |
| Weight | Net: 14kg each Gross: 30kg (per pair including packing) |
| Colour | Plinth: Satin Black Fabric Grille: Black |
| Distortion | Second harmonic: less than 2% from 20Hz to 80Hz less than 1% from 80Hz to 20kHz Third harmonic: less than 1% from 20Hz to 20kHz. Measured at 1m on measuring axis at mean spl of 90dB, anechoic conditions |
| Enclosure Type | Closed Box |
| Resonance Frequency | 68Hz |
| Total System Q | 0.8 |
| Nominal Impedance | 8 ohms |
| Internal Volume | 38 litres |
| Maximum Continuous Sinusoidal Input | 28V rms from 60Hz to 2kHz reducing to 10V rms from 2.5kHz to 20kHz |
| Characteristic Sensitivity Level | 87dB spl at 1m on measuring axis for pink noise input of 1W |
| Directional Characteristics | Horizontal: within +/-2dB of axial responses up to 10kHz for +/-20° Vertical: within +/-2dB for axial response up to 20kHz for +/-5° |
| Programme Rating | 100W |
| Maximum Output | 107dB spl on programme peaks under typical listening conditions |
| Frequency Range | 60Hz to 20kHz +/-3dB at 2m on measuring axis (-10dB at 40Hz and 25kHz) |
| Minimum Amplifier Requirements | 10W |