The story of the Symphonia
The Symphonia speaker is a labour of love , and the result of a 5 year R&D journey in horn speaker engineering. Years ago as a young audio enthusiast, I was fascinated with horn speaker technology, and quickly recognised the innate potential in their design.
The Symphonia began as a personal project, long before the establishment of Aries Cerat in 2010. So, you can say that the Symphonia was a project that grew along with the company and adopted many breakthroughs from other speaker projects that were also in progress.

Part of the reason for the Symphonia’s extended development was that a lot of work and effort went into eliminating problems that accompany horn physics. I regard horns as the ultimate electro-acoustic transducer, but only when the specific aspects of horn design are respected and implemented correctly. This is what we have achieved with the Symphonia.”

Stavros Danos
DESIGNER: ARIES CERAT

High frequency reproduction
The HF transducer, is a customized highest quality true Al foil ribbon, made from RAAL company.

This is loaded with a specially designed and unique shaped horn, to dramatically alter the parameters and performance of the tweeter.

The unique shaped tweeter horn, is a Zero Diffraction horn, with a 360 degree continuous flare, eliminating all possible diffraction in vertical and horizontal axis, delivering perfect performance in frequency and time domain, with unmatched transient and distortion figures, by any other HF transducer technology used. The horn body is made from solid wood.

Midrange reproduction
The midrange horn is made from solid wood, it’s unique flare is designed to eliminate all possible diffractions, which all other horns suffer from, and are part of their sound character.

We completely eliminate diffraction coloration, which smears transients, with our 360 degree bullet-shaped solid-wood horns.

The driver used is large format (4inch diaphragm) titanium driver, with a massive magnetic system(11kg magnet weight). The midrange acoustic level can be altered via a multitap transformer, for tuning the speaker according to each room’s acoustics.

Midbass-bass reproduction
We believe that bass delivered from horn loaded drivers are unmatched in performance, as long as the horn in properly designed.
 Folded horns suffer from three major factors.

First their usually shorter length for the bandwidth used. Shorter horns and small mouth-area bass-horns have large frequency response ripples and strong coloration.

Secondly, the horn is usually not properly folded, as the horn flare is formed by conical sections of wooden sheets, with a sharp angles and many parallel surfaces, trying to resemble something like a horn flare. Horns and bass horns in particular subject their internal walls to extreme pressures. Plain sheets of wood are just not appropriate for this task.

Our solution to the Bass Horn
The Bass horn we use is 3.3m long horn and has a very large mouth area for the bandwidth used. This provides excellent performance in bass extension and weight, with the lowest coloration than any other type of folded horn. 
The horn flare, a true tractrix flare, is formed by stacked sheets of plywood, carved to formed a 3.3m long tractrix horn, properly folded without any internal sharp angles and geometrical deviation.

The stacked plywood construction, provides 10 times the stiffness (along the horn axis), compared to conical horns formed by sheets of wood which would also be constructed with a much reduced weight/stiffness ratio, providing minimum energy storage.

Filter design
The external crossover, consists of three constant group delay filters. A constant group delay filter, is our own proprietary design, which alters the attenuation slopes of the driver filters, to shape the phase(and doing so the GD)in such a way ,as to provide maximum GD linearity.

Using this specific filter technology to the physically time aligned horns, the Symphonia speaker present time domain performance which is near perfect, and a frequency response with a maximum deviation of +-0.5db (250Hz-20KHz).

SPECIFICATIONS
3 Horn design
Sensitivity : 101db
Frequency response: (-3db) 32Hz~100Khz
Frequency response: (+-0.5db) 250Hz-20KHz
External crossover with 3 constant group delay filters
Alu Tweeter in 360° housing
Midrange horn with large 4 inch diaphragm, titanium driver with 11kg. Adjustable gain.
Bass horn with tractrix flare of 3.3 metres
Solid wood construction
Weight: 170 kilos each
Dimensions : 930mm W X 1300mm H X 880mm D