Bowers & Wilkins
DM6 (1975 - 1979)
Floor-standing
loudspeaker system
Product Summary
Early in 1972 it was
decided to fill the gap in the existing range of B&W loudspeakers between
the already successful DM2A and the DM70. Initially this was a fairly
straightforward commercial requirement but as the development programme
progressed its scope widened into the development of new measuring techniques
and the use of new materials.
It culminated in the
production of what is probably the first British Loudspeaker System to take
account of relative phase between the drive units and offering a transducer
that has a substantially minimum phase characteristic throughout the audio
spectrum, with the resultant improvement in the reproduction of all transient
information.
Technical highlights
The DM6 Bass unit
operated in an enclosure volume between 51-60 litres providing a system
resonance below 50 Hz.
The Midrange Unit
crosses over from the Bass unit at 500 Hz and operates up to the point of
crossover by the HF unit which was estimated around 6 kHz. In view of the
crossover frequencies chosen it was necessary for this unit to have a
substantially linear response from well below 100 kHz to some 10 kHz.
To compliment the
other two units and carry the frequency response well above 20 kHz. It was also
felt desirable that unit should have really wide dispersion and that its
diameter should be as small as possible consistent with the power handling
required.
Specifications
Type: 3-way floorstanding loudspeaker with stand
Drive Units:
1 x TW 20 high
frequency unit voice coil diameter 19 mm
1 x 131 mm midrange
unit MW 150 voice coil diameter 37 mm
1 x 224 mm low
frequency woofer
Frequency
Response: 50 Hz to 20 kHz, ±3 dB, 3
metres on axis
Crossover
Frequency: 500 Hz, 5,000 Hz
Sensitivity: 95 dB at 1 metre
Nominal
Impedance: 8 ohms
Power Handling: 25 W – 350 W
Dimensions:
Height : 931mm
(including stand)
Width : 410mm
Depth : 380mm
Weight: 36,1 kg