The
Osborn Mini Tower has been designed and constructed in Australia,
without compromise, in order to obtain the highest possible sound
quality in a fashionably tall thin design which is unobtrusive
in a living environment. The only criteria in the choice of components,
materials, size and cost is the achievement of the ultimate sound
quality, in a speaker less physically imposing than the larger
Osborn range. We believe that our design goals have been realized
with this speaker.
The
Osborn Mini Tower is one of the finest speakers in the world,
with unmatched speed and transient attack. It has been designed
for the Asian Market and smaller European homes and for people
who want most of the power and authority of the larger models
but can not accommodate their sheer size.
Traditionally
speakers of this size and shape, with such small frontal dimensions
have had several notable advantages and disadvantages. The advantages
are that they are unobtrusive and have a high "wife acceptance
factor." They also usually gained slightly in imaging integrity
due to the small frontal area reducing cabinet reflections. The
disadvantages were lower power handling, lower efficiency, minimal
bass output, poor cabinet rigidity due to small size and frontal
area necessitating thin, lightweight construction. In short a
speaker of this type was traditionally purchased to look at and
live with, rather than listen to.
At
Osborn, we appreciated that there was a market requirement for
this type of speaker, but our design philosophies did not allow
for a speaker with compressed dynamics, reduced bass extension
and a lacklustre, unexciting performance, regardless of how unobtrusive
it looked. Therefore we set out to make a speaker that matched
the size criteria, but came as close as possible to the performance
of the larger models. The dynamics, bass, transparency and sheer
power of this little speaker is unmatched by virtually any other
speaker of this type at any price. Few other speakers anywhere
near their size can deliver the whole weight, power and authority
of a full symphony orchestra. From the tinkle of the tiniest bell
to the blast of a brass cannon, to the depth of a giant pipe organ,
with pin point imaging. Naturally the bass performance, although
astonishing, considering what is generating it, cannot match the
depth and extension of the larger models. This is a simple matter
of physics. Little cones cannot match the air moving capacities
of larger ones. Also true sub bass is just not possible with smaller
drivers. Some manufacturers try to force the impossible by using
large amounts of bass boost to try to compensate for the natural
roll off of the drivers. This always results in extended, but
flabby, forced sounding, boomey bass. This does not match the
"Natural Sound" criteria of Osborn Loudspeakers.
The crossovers
use the best components attainable. The capacitors are imported
from America and the inductors are wound in-house as none are
available commercially which meet our criteria. Each crossover
weighs about 3 kg. each and is hard wired with specially selected
ultra wide bandwidth, high speed data transfer cable. The Inductors
are as big as can be manoeuvred through the bass driver cut-outs.
Two separate crossovers are used. One for the two bass drivers
and the other handles the treble and mid range.
The cabinets are shaped using high precision, computer controlled
milling equipment. All models are constructed from 25 mm Customwood
sides and 32 mm fronts and backs and are heavily braced. They
are exceptionally heavy, solid and are acoustically inert. High
quality natural timber veneers are used, and every cabinet is
carefully hand finished to ensure a superb quality finish which
will grace any living room.
Only the
best quality Turntable/CD Player and Amplifiers were used in the
design of these speakers.
These speakers have a number of outstanding features - the ability
to separate instruments and place them firmly and accurately on
a sound stage of uncanny width and depth. The instruments retain
their correct pitch, tone and shimmer with a dynamic range and
speed unmatched by any speaker this size, in any price range,
with drums retaining almost all of their impact and depth.
The warranty on these speakers is Five years parts and labour
from the date of purchase.
Specifications:
| SPEAKER DIMENSIONS | 930 X 175 X 270mm |
| WEIGHT | 25 Kg. |
| EFFICIENCY | 92 db for I watt at 1 meter. |
| DRIVER DIMENSIONS | |
| Tweeter | 3.0 mm fiber glass inverted dome. 1.4 Kg magnet. Cone weight 0.25 g |
| Mid Range | 125 mm (5") Polykevlar cone with cast aluminum frame. 40 mm edge wound flat aluminum wire. Total moving mass 6.9g. Driver weight 1.6 Kg. |
| Bass | 2 of 125mm Polyglass cone. 40mm edge wound flat copper wire. Total moving mass 12.1g Driver weight 1.6 Kg. Resonant Frequency 52Hz. |
| FREQ. RESPONSE | 40 to 18000Hz, +/- 3 db. -10db points 35 and 21000Hz. |
| CROSSOVER POINTS | 250 Hz and 4500 Hz, @ 6 db/Octave. |
| MIN. IMPEDANCE | 4 Ohm. |
| MAXIMUM POWER | 100 Watts R.M.S per Channel |
| Rec. Min, | 10 Watts per Channel |
| Rec. Ideal. | 50 to 100 Watts per Channel. |
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