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The 0M5 is (he successor to the B&W 05
which in recent years has earned a world
wide reputation for out performing many
loud speaker systems two or even three
times Its size.
So It was hardly surprising that the originai
intention in re*designing the 05 was merely
to improve itsappearance However, as work
proceeded opportunities arose to make
improvements in almost every area in some
instances these arose from a development
programme that had already been set up for
the DM6 The Ngh frequency unit in the 0M5
for exairpie. is identical to that used in the
E^6 and offers what is probably the best
transient b^iaviour of any h.f. i^it in the
world, with a linear extension of the
frequency response to at least an octave
above aucfibility.
In addition the 0M5 has extremely low system
resonar>ce and “Or Typically a system
resonance of some 53 Hz and a “Q*' of O.?-
figures that would do credit to loudspeakers
four times its size They have been achieved
by re-designing (he Bass/Midrange Unit
employing new suspension materials, and by
a Sf^i increase in the enclosure volume
over the 05.
Both of these improvements are of vital
importarice in the useful exter^n of low
frequency performance, and also in allowing
the unit to be tightly coupled in a room by
wall mounting or by fitting ina bookshelf.
Easily removable foam front
Secured by special \^cro
Crossover mounted
on cover (^ate.
System fuse 2 amp
Cabinel in high der^ty
particle board 18 loading.
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In order toobtainareallysati8fyir>g bass
response from a loudsp^er system, it was.
until comparatively recently necessary to
have a free standing enclosure of approx
imately 50 to 60litres
Which effectively ruled out a really faithful
reproduction of oiigirtal sound for most home
listeners: they simply didn’t have the space.
Now. with the DM5, a mere 19 li^ repro*
duces the whole musics spectrum from the
lowest organ pedal note to the transient
attack of a cymbal crash
What's more the OM5 has low 'Q." another
qu^ity that is extremely difficult to achieve in
a small ^aker. What this means to the home
listener is that the speakers can be mounted
on a wall or intoa shelving system, without
the bass becoming resonant or boomy
The ^S s technical achievement in produc
ing a big sound from a small enclosure is
matched by its appearance A choice of
Rosewood. Teak or Walnut N^eers.oraSatin
White finish ensures that it will blend successfully with just aboul^y existing interior decor.
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Amplitude/Ffequ«ncy respon&c
= c 5dBi00H?to20kHz -ee'-eic
Sensitivity
66watts«nionominalimoedancefie
volts) tor 8 sourtd pressure ot 95 dB pirwi
Power handling
Suitable tor amplifiers between tOand 25
v^tts f rr $ iir)der rtorma' domestn
conditions
Overioad protection
20amp Quick blow fuse to protect systemi
usinp amplifiers above 25 watts r m s
1 Octave room response of DM5 and optimurr Polar Dispersion
charactenstic (from recommendation of ''Refevani Hi-F> 500Hz
Test at Home" Henning Moiier. B&k Application Note M -П4
On-axis free-fieioampinuoe'ireouency
responsedakenin B&W research anechoic chamber)
—
Croasove*
C 'ossove* tfeoue^> A.^kHjvnimhirooroe*
••■ter network enviioymg close tolerance
components thioupbout and Poivester not
eiearotytic conoensers
Nominal impedance
fcOnm*
Bass/Midrange unit 8&W 150/M5
Effective cone diameter laomm
Voice coil diameter 26 mm
E ree air resonance 40 Hz
Flux oertsily 1.2 testa nonmna!
Ы
e»*f*
1
[Щ
»rt
[I;
r]jf
уцТ
j 1
1--!
N
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F*
-
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'.1
i ;
High frequency urvi Baw
Voice coil diameter tp—
Dome formed poiyesie* weav»
Toiaf moving mass 0 ' ' or^ nonimt
Drive unit loading
TheB&W ISOfMSDass-mtorange
loaded with a highiy oamoeo seaiec
enclosure and the high ireouencv dome se
ioadirtg. Front facta covereo with Poiyeste*
acoustic foam
System resonance 53 Hz nominai ano syster^
“O" be)ow075
Иаггтхтю Distortion fo« 6 volts 'прщ
(soho curve = 2no dotted curve » »0
-
-f
Modulus of impedancr
Tone burst osallograms. 8on/8off
125Hz 250Hz SOOHz 1kHz
NÌHÌPÌ
8 kHz 16kHz
I-WMBkI I-O-C-
BAWLuuitkpMM>*L>drMcrv«tn«figNle«rtfn(lKtK.-iiK-<<M>n»wtthiiulpnofnutcvin<>n« iwin (•ct№4>Mv*oi)m*nb
B&W Loudspeakers
MEADOW ROAD • WORTHING - BN11 2RX • ENGLAND
Talaphone 0903 205611 Cables 'Monex* Worthing Telex 87342
«8Ì»
T?ie Queens Award
to Industry 1973
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