RDacoustic Evolution speakers backhorn stereo 2.0 Voxativ wooden cone Front horn Oris500
High End speakers Evolution backhorn stereo 2.0 Voxativ wooden cone Front horn Oris500

High End speakers Evolution are designed for truthful stereo 2.0 listening. Luxury speakers Evolution are characterized by full details, excellent localization and spaciousness of musical instruments. Evolution speakers contain only one speaker driver with very high sensitivity and unique horn transline without any compromising details in its construction. HiFi, High Fidelity.

Options:

  • The color of the paint up on customer request
  • The color and the type of artificial leather up on customer request
  • The choice between 4 types of wood and five different shades of varnish
    • Oak
    • Ash
    • Cherry
    • Amercian nut
  • The choice of 8” full-range speaker driver (Voxativ, Lowther, Sonido, Enviee, Tang-bang, etc.)

 

Technical Parameters

RDacoustic Evolution speakers high-end stereo 2.0 Lešná castle
High End speakers Evolution stereo 2.0 Lešná castle
  • Sensitivity based on the type of speaker driver used from 98dB to 110 dB.
  • Absence of frequency crossovers guarantees outstanding spaciousness and localization of instruments.
  • Connection terminals are positioned next to the speaker in order to get the shortest possible signal path.
  • Based on a request of a customer, we can place the speaker terminals on the rear side of the cabinet.
  • The cabinet is constructed by using 5D CNC milling cutter from special ultra strong HDF 25mm board
  • Horn baffle exponenciality is reached in all axes.
  • The front and the rear walls are coated by a isolation material, which absorbs unwanted vibrations.

 

Dimensions:

Height 180 cm
Width 45 cm
Depth 50 cm
Weight 2 x 75 kg
Price from 9 990 EUR

The patented designEuropean Union Intellectual Property Office

Design of High End speakers Evolution is patented and protected by European industrial design 003028331-0001.

Sample bok of artificial leather

Sample book of wood

A1 textura RDacoustic reproduktory stereo 2.1 surround

 

 

Accessories

Front horn Oris500

RDacoustic Evolution speakers front Horn ORIS500 with FE206EN speaker driver
RDacoustic front horn ORIS500 Evolution speakers

It is used to optimize the final acoustic sound in a particular area. Front horn Oris500 can intensify sound frequencies from 500Hz by 3dB and direct it to the listener. The horn can partially compensate inadequate acoustics of the listening space. It improves sound performance at isolated rooms with minimal sound reverberation. It is made from oak wood for its hardness and perfect acoustic features.

Phase Stabilizers

Another option of how to improve audio quality and tune the directivity of speaker can be the use of the phase stabilizer. It compensates sound pressure at the center speaker driver and prevents acoustic reflection between walls of the smaller height of the diaphragm and directs the acoustic pressure directly to the listener.

RDacoustic Speaker driver phase stabilizer Fostex FE206en
Speaker driver phase stabilizer 40mm
RDacoustic Speaker driver phase stabilizer Fostex FE206en
Speaker driver phase stabilizer 50mm
RDacoustic Speaker driver phase stabilizer Fostex FE206en
Speaker driver phase stabilizer 60mm
RDacoustic Speaker driver phase stabilizer Fostex FE206en
Speaker driver phase stabilizer 70mm
RDacoustic Speaker driver phase stabilizer Fostex FE206en
Speaker driver phase stabilizer 80mm

The length of the phase stabilizer is optional and its availible from 40mm to 80mm. Its made from dried oak wood for its hardness and great reflectivity. The influence of phase stabilizer is obvious within trebles localization. All adaptors fit well using magnetic base but are only suitable with FE206EN driver.

Gold plated WBT terminals

RDacoustic High-End speaker terminals WBT 702.11 Gold plated
RDacoustic High-End speaker terminals WBT 702.11 Gold plated

These are the leading High End terminals, which are available as an optional replacement of standard terminals. Terminals WBT 702.01 TopLine Gold Plated are connected with four silver-plated braided conductors with cross-section of 6mm2.

 

Marble Pedestal

RDacoustic marble predestal for High End spekers Evolution
RDacoustic marble predestal for High End spekers Evolution

Marble pedestal is an optional accessory or decorative addition to the High End speakers Evolution.

Height: 53 cm
Width: 48 cm
Depth: 3 cm
Weight: 16 kg

 

a href=”/wp-content/uploads/Evolution_marble_predestal.jpg” target=”_blank”>RDacoustic marble predestal for Evolution Speakers RDacoustic marble predestal for Evolution Speakers

Tests

HiFi-Pig magazine link
 
 
   
SterStereoSound CN logoeoSound CN logo link

Videos

Picture gallery

  • RDacoustic Evolution speakers Lenka Filipova Lesna castle Czech republic
    RDacoustic Evolution speakers Lenka Filipova Lesna castle Czech republic

Frequently asked questions

Why don’t we use crossovers?

For standard constructions of multiband speaker crossover splits the signal into separate speaker drivers so that the tweeter driver is only playing high frequency, midrange driver only middle frequency and woofer driver only bass frequency.
In the crossover are used capacitors, which due to its capacity delay the phase signal at the crossover frequency to the 90° and because of the coils, which due to its inductance shifts signal’s phase forward by 90°. Physically, speaker’s diaphragms go against each other in this dividing frequency and their acoustic pressure is subtracted. To the human ear the crossover frequency between high and midrange speaker drivers is the most sensitive. The human auditory system locates dimensionality based on the volume difference and phase shifting signal in the left and right ear. Full range speakers do not contain frequency crossover and do not shift signal’s phase.

How does the horn cabinet work?

The base of the construction of speaker with full-range driver is the horn baffle. A long time ago people noticed the acoustic attributes of expanding animal horn. Edison’s famous invention phonograph from 1877 and also the first gramophone invented 10 year later were based on the same principles as the exponencial horn baffle which we are using as well.

Physical principle of exponencial horn baffle

Exponencial horn baffle serves to improve the efficiency of the connection between the speaker’s driver and the surrounding air. Horn baffle can be thought of as an “acoustic transformer”, which provides impedance adaptation between a dense material of the speaker driver membrane (paper, metal, wood) and less dense surrounding air. The result is a more efficient transfer of acoustic output from the speaker drive. Angular coverage, or radiation pattern of horn baffle is determined by the shape, the length of the baffle and the roundness at the end. Moreover its angular coverage is depended on the radiated frequency.

Why are speakers Evolution so tall?

The lower frequency limit of a horn baffle is based on its total length. The longer transline, the lower frequencies. It also depends on the size of the membrane of the speaker driver and the length of the horn. It is important to balance these systems, because a too long horn (in a relation to the size of the speaker driver diaphragm) loses its dynamics on the low frequencies.

By many years of development and many tests we have reached to this size and a shape of the cabinet, which is ideal for highly sensitive 8” full-range drivers that we use.

The “ground plan” of the High End speakers Evolution is only 45 x 50 cm. These don’t take much more space than conventional loudspeakers.