AUDIO SOLUTIONS OVERTURE O303F DEMO

Description

Audio Solutions Overture O303F Floorstanding Speakers

A demo unit in white is available at this price.

Overture O303F MK3 is a third-generation entry-level speaker of AudioSolutions. Overture O303F MK3 has a marking O3** and is changing older MK2 version marked O2**; Third series Overture introduces completely new looks compared to its predecessor. These rather drastic visual changes keep completely reworked speakers – a cabinet, drivers and crossover structure. We proudly present Overture – the ultimate marriage of art and technology.

Audio Solutions Overture O303F is a 2-way MTM design floor standing speaker equipped with a customized silk dome tweeter and ER cone mid-bass drivers. The Overture comes with carpet-piercing spikes for stability and improved performance. You will also find protective caps for spikes in the set if you want to place the speaker on hardwood floors. Spikes are threaded with M6; this standard allows the customer to experiment with another type of spikes or dampening feet to his taste. We upgraded binding posts to massive ones finished in lovely frosted satin silver. These binding posts can take even the thickest high-end cable manufactured today and provide proper grip for tightening and, most importantly – an appropriate path for signal travel without any losses. Overture MK3 is offered in two standard colours, Gloss Black and Gloss White. We offer three kinds of wood textures at extra options – Oak, Mahogany, and Wenge.

FEATURES

Two-way speaker system. Highly braced, all new Sectional-Box-in-a-Box cabinet inspired by award-winning Virtuoso series speakers. High-flow bass reflex port with highly rounded flange. ER cone mid-bass drivers inspired by our most popular Figaro series speakers, silk dome tweeter loaded with famous mini-horn. Phase-linear crossover with extra thick copper PCB and high-grade coreless copper coils. I completely reworked massive binding posts and a set of spikes.

SECTIONAL-BOX-IN-A-BOX CABINET

Overture MK2 was equipped with a self-locking cabinet structure that was a significant breakthrough compared to a typical non-complex cabinet structure. Working with the massive potential of the self-locking cabinet, we came up with another cabinet type – Box-in-a-Box design. This type of cabinet is used in our award-winning Virtuoso speakers and is remarkably stiff yet shares excellent dampening properties. Seeing its flexibility to work with and the potential of Box-in-a-Box cabinets in general, we decided to adapt this expensive technology to our cheaper entry-level products. Overture MK3 shares Virtuoso cabinet technology and is equipped with a Sectional-Box-in-a-Box cabinet system. The whole cabinet consists of two intersecting cabinets – a lightweight inner box and a heavy outer box. The polyurethane layer in between the two boxes acts as dampening material.

The thin but stiff inner cabinet provides the necessary support for the structure itself and transfers the energy of radiated back-wave to the outer cabinet. Layers without storing energy inside the material and preventing the back-wave from being reflected in the listener. Fast energy transfer is essential to prevent low Q oscillations, which can last relatively long and ruin precise sound reproduction. To illustrate low Q oscillations think of the swings where energy is stored for a prolonged period, and oscillations die slowly due to high mass and lack of dampening. With just one push, you will have prolonged oscillations that are unwanted in the cabinets. Transferred from an inner box, energy reaches the outer box, which has a vast mass to absorb the received energy (compared to the inner cabinet) and has low internal tension forces and thus high dampening properties to dissipate energy into heat fast as possible without generating unwanted prolonged oscillations. However, these two layers alone cannot provide efficient energy exchange and dissipation into heat. That’s why the third layer between outer and inner boxes is so essential – a polyurethane layer joins two cabinets (separated by a fraction of a millimetre). It provides additional dampening due to high viscosity. This layer acts as an additional barrier for energy to be dissipated into heat while travelling from the inner box to the outer box and helps the outer high mass box stop its movement quickly. To illustrate its working principle, we can imagine swings being suddenly stopped with the help of a soft pillow.

MINI-HORN

All our speaker series are equipped with Mini Horn loading. This is a unique treatment for soft dome tweeters. Soft dome tweeters are known to have high distortions when driven loud. Distortions rise exponentially because the centre part of the dome stops moving at certain levels and frequencies, thus flexing uncontrolled by the suspension. This is due to the soft dome nature. Some manufacturers use an ark over a tweeter’s dome with dampening material touching the dome’s centre to dampen this unwanted flex. The problem with such a system occurs at different listening levels. It is simply not linear because the force in which the dome’s centre is rammed by dampening material is fixed and doesn’t change with the tweeter’s excursion. Others use stiffening materials like titanium bracing glued to the dome, i.e. This solution is far better; however, it is not without flaws. Yes, it strengthens the structure but adds mass to it and thus inertia of dome spoiling impulse characteristics and sensitivity. Also, this is quite expensive to manufacture with low tolerances so that electrical and acoustical parameters wouldn’t differ between samples.

On the other hand, our Mini Horn is much more efficient to manufacture and repeat the process with low tolerances. Mini-Horn is based on acoustic dampening, just as it is in usual horns. We carefully measure at which frequencies the tweeter flexes and emits an avalanche of distortions. Mini Horn is calculated and manufactured according to desired specifications to dampen those frequencies. The result is a proportional dampening of the tweeters’ movement. The louder it plays, the more dampening it gets from its emitted sound. It is described as acoustic impedance and is highly dependent on a mini-horn shape. Another aspect is that Mini Horn adds sensitivity (because of – horn) rather than lowering sensitivity (because of restricting movement) like in previous examples.