SoulSonic Hologramm-X is essentially the biggest passive loudspeaker in the world - 2400mm tall !
It uses the biggest single piece true ribbon in the world - 2210mm tall !
Four 15" woofers and one 12" midrange working in an open back, cardioid dipole type of enclosure.

With a huge effective radiating area of more than 4000 square cm, this speaker is quite well equipped to cope with even the most demanding music material. Considering the active and passive surface areas of typical instruments, one can only acknowledge there isn`t such a thing as too big speaker. To even remotely touch upon the sonic realism of live music there is no substitute for "sound torque" - the active (drivers) and passive (speaker front baffle) surface area. With it comes one clear advantage over smaller loudspeaker systems:  low intensity per unit area of radiating surface or low surface loudness.
Being a dipole speaker or velocity transducer, SoulSonic Hologramm-X also differs from boxed speakers in a way how it propagates the sound waves into the listening space. How this translates into musical enjoyment is something everyone should experience!
A state of the art loudspeaker system that stirs emotions with its sound and design.