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Roof Speaker

Ceiling mounted version of the F 1 (Atom for Reference & Elite versions) for crystal clear surround sound.


Direct Price:  $1,590 


 10% price rise 1/11/2021                  

This minimal compromise design allows the natural life and excitement of the original live performance to be faithfully reproduced. Remember the power requirements of an Effects Speakers is not as high as for Main Speakers and Subwoofers. This speaker is a smaller footprint, ceiling mounted, non bi-polar version of the larger bi-polar E1, which was originally designed to meet the requirements of the Home Theater package as ordered by the Sultan of Brunei, hence a speaker of incredible performance was required. The Roof Speaker is perfect for use in smaller rooms, or where space is at a premium, yet high quality sound is desired.

         Effects speakers usually sound terrible if played as a stereo pair. The drive units for the Roof Speaker were chosen from the best available from around the world for unrivaled speed and accuracy. As a result, a level of transparency comparable to the rest of the range of Osborn Loudspeakers has been achieved. In fact in designing these speakers, several respected competing models were tried. These all sounded awful when asked to reproduce music. The Roof Speaker sounds amazing as a stereo pair, with a wide firm soundstage and a sense of weight and authority not found in a speaker of this type.
         A hole the size of the speaker box is cut in the ceiling, and the wide collar spreads the weight evenly on the plaster and the front of the speaker is flush with the roof, so only the grill protrudes below the ceiling This is a true Audiophile speaker system which has been adapted to this requirement. This is to ensure that the integrity and purity of the sound emitting from your Osborn Front and Rear Speakers is maintained.




25mm fabric dome with an 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.


125mm "W" Cone. 25mm voice coil with 1.5kg magnet.

Reference and Elite mid/bass driver

127mm "W" Cone. 32mm voice coil with Neodymium magnet.  One of the very best 5" mid/bass drivers available at any price. 

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SPEAKER DIMENSIONS:      290 X 140 (Including grill) X 310 mm 
WEIGHT:      7Kg.  12Kg for Reference and Elite. 
EFFICIENCY:     90 db for 1 watt at 1 meter. 
Tweeter:     30 mm soft dome with 0.5 Kg. magnet. Dome weight 0.25g 
Mid/Bass:     125mm "W" cone. 40mm edge  wound flat  copper wire.  Total 1.6 Kg. Resonant  Frequency 45Hz. 
FREQUENCY RESPONSE:     40 to 19000 Hz +/- 2 db. -10db points 35 and 21000 Hz. 
CROSSOVER POINTS:       3700 Hz @ 6 db/Octave. 
IMPEDANCE:     6 Ohm. 
MAXIMUM POWER:      100 Watts R.M.S / Channel. 

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