Osborn Epitome Mk V1
and Optional Epitome Bass Unit.

"Very few loudspeakers at any price can match the transparency, detail, dynamics, weight and sheer power of this combination".



                                                     Epitome.                                                                                                 Epitome and matching Bass Units.

Click to download PDF Price List

    The Osborn Epitome has been designed and constructed in Australia, without compromise, in order to obtain the highest possible sound quality. The only criteria in the choice of components, materials, size and cost is the achievement of the ultimate sound quality. We believe that our design goals have been realised with this speaker, now in its sixth generation.

        The Osborn Epitome is one of the finest speakers in the world, with unmatched speed and transient attack. But matched with the optional Epitome Bass unit the performance becomes extraordinary. The dynamics, bass, transparency and sheer power becomes unmatched by virtually any other speaker at any price. No other speaker combination 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 32 foot pipe organ. It is not only the bass which is improved with the addition of the Bass unit, the entire audio spectrum is improved. Transparency, dynamic contrasts, and detail are transformed. And of course the bass becomes unsurpassed in speed, power, depth and detail. The sound stage is also greatly enhanced in both width and depth and in the pin point imaging.

        Several of the world's best speakers were used as references in the design of these speakers. We believe that the sound quality of these speakers is superior to all the references.

        The drive units were chosen from the best available from around the world for unrivalled speed and accuracy. As a result, a level of transparency comparable to the best Electrostatic speakers has been achieved.

        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 is hard wired with specially selected ultra wide bandwidth, ultra high speed data transfer cable and weighs about 6 kilograms.

        Only the best quality Turntable/CD Player and Amplifiers were used in the design of these speakers. High quality timber veneers are used on these speakers. Standard finishes are Jarrah and Bubinga. The cabinets are shaped using high precision, computer controlled milling equipment. All models are constructed from 32 mm Customwood and are heavily braced.   The Grand Epitome is also fully lined with a felt/lead/felt sandwich as used on the Grand Monument Reference.  Both models 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.
         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: Dynamic range and speed unmatched by any speaker in any price range and the ability for drums to retain their impact and depth, with or without the addition of the Epitome Bass unit. The Epitome Bass Unit can be added at any time and the crossover is switchable for use with or without the bass unit.

Epitome Specifications:

SPEAKER DIMENSIONS 1160(Bass 770) X 380 X  440mm.
WEIGHT 68 Kg. Bass Unit 42 Kg. 
  Grand Epitome 91 Kg.  Grand Epitome bass 62 Kg.
 EFFICIENCY    90db for 1 watt at 1  meter. 93 db withEpitome Bass unit.
Tweeter  (For Grand Epitome)  
29mm soft dome tweeter with a high
efficiency ring magnet consisting of 6 radial
Neodymium magnets.

Tweeter  (For Epitome): 
25mm fabric dome withan optimally shaped dome and a wide SONOMEX surround. Low viscosity magnetic fluid which provides excellent cooling while maintaining a low resonance frequency.
6 mm solid metal front plate with a slight loading characteristic which ensures
linear frequency response, and a stiff and stable connection to the cabinet.   A double magnet system, with a substantial injection-moulded rear chamber, with complex internal shape and reinforcing ribs, which eliminate unwanted chamber resonances and reflections.

Mid Range:
165mm "W" Cone. 40mm voice coil with Neodymium magnet.
260 mm Nextel coated paper. 51 mm voice coil. Moving mass 51.5 g. Driver weight 4.5Kg. Resonant Frequency 31 Hz.
Grand Epitomes 20 to 20000 Hz. Tweeter accuracy  throughout operating  range +0/-1db.  Usable bass to 8 Hz.
Epitomes 20 to 18000 Hz +/- 3 db. -10 db points 15 Hz  and 21000Hz. Usable bass to 8 Hz.
CROSSOVER POINTS   125 Hz and 3500 Hz @ 12 db/Octave. Bass Unit  @ 60 Hz.
MINIMUM IMPEDANCE 5.8 Ohm. With Bass Unit 3.9 Ohm.
REC. MAXIMUM POWER   200 Watts R.M.S per Channel.
REC. MINIMUM POWER 10 Watts R.M.S per Channel.
      The above specifications show why these speakers are capable of such extraordinary transient performance and yet reveal such intimate detail in the music. This fidelity is possible due to the fine tolerances and light weight of the driver weight and voice coils.         

The Grand Epitome Reference features heavy lead lining to all exterior surfaces. The same heavy bracing is used, but all areas between the bracing are covered by a unique sandwich lining. Heavy acoustic felt is used to separate the heavy lead sheet from the cabinetry. A further layer of heavy acoustic felt is placed over the lead and the entire sandwich is stapled to the walls of the cabinet. This result is what is effectively a box within a box. Wrapping the outside of the speaker is similar to knocking on a brick. This totally inert cabinet construction results in the ultimate sound reproduction.

Handout in pdf

Reviews and Comments:

International Audio Review
Bound for Sound (May 2000)
Inner Ear (Canada):