Collegia Opificum Strato A 4" RJ speakers NEW

Collegia Opificum just released their new Strato A 4" RJ patent pending loudspeakers. 

Unique technique used, intendeds to solve the problems of traditional bass reflex speakers by implementation of physical phenomenon called Coanda effect used by the aeronautical industry.

“Coanda effect is the phenomena in which a jet flow attaches itself to a nearby surface and remains attached even when the surface curves away from the initial jet direction. In free surroundings, a jet of fluid entrains and mixes with its surroundings as it flows away from a nozzle.”

Any increase in pressure described above generates a correct speakers damping effect.


- Ability to apply more power and sound press
- extend lower bass frequencies
- absence of typical time domain hubris