Designed by Jacob Jensen in the mid-1970s to complement the sophisticated Beomaster 6000, the Beovox M70 monitor-type loudspeaker could be used as front speaker when it would look very modern when placed upon its own trumpet-type pedestal. The unit was available in two wooden finishes with white being to special order.
The Beovox M70/75 and M100 had the same midrange unit, a German-made ITT Schaub-Lorenz unit (LPKM/130/50 120T), classified by them as a 50mm (presumably the diameter of the voice coil) soft dome in a 130mm housing; the textile dome itself being about 55mm and about 65mm (measured) including its surround. The B&O speaker leaflet of the time lists it as a 2.5″ (6.3cm). The tweeter for the M70 was a SEAS H086 (25mm soft-dome unit), while the M75 had an Audax 25mm soft-dome unit (HD12×9D25).
The crossover frequencies for the M70 were 500Hz and 4500Hz.
The loudspeaker was subsequently replaced by the Beovox M75.
Type: 6304 (to May 1978)
Continuous load 70 W
Music load 120 W
Impedance: 4 - 8 ohms
Frequency response: +4 -8 dB 27 - 20,000Hz
Sensitivity: 5 W
Gross volume: 39.1 litre
Woofer: 25 cm
Phase link unit:12.5 cm
Mid-range unit: 2.5 cm
Dimensions W x H x D: 35 x 65 x 29 cm
Weight 25 kg