Audison – The Epitome Of Instinctive Innovation
Since 1987 Italian audio virtuoso Audison has been crafting some of the world’s finest mobile electronics. It firmly believes that sound reproduction is a fascinating world where emotion and technology cohabit. Like any form of art, the greatest result is achieved when these two values embrace at their peak. Following this dogma, every project Audison develops is conceived with an attitude drawing from its love for music and a desire to challenge the existing standards. As Audison say, it’ll forever follow its istinto innovative.

Voce Series - The Authentic Voice
Innovation, advanced design, benchmark performance; these form the synthesis of consolidated know-how applied to car audio systems. The Voce project was born to make Thesis sound quality available to a wider audience. The development of these components took advantage of the major innovations introduced while designing the Thesis range. Things like analog and digital technologies combined using different classes of configuration for amplifiers. Or when talking speakers there's such things as the reduction of non-linear distortion, linearisation of acoustic and electric loads, control of cone and diaphragm resonance and so on. To achieve these goals it was necessary to develop new circuit solutions, increase heat capacity, design new moulds for baskets and diaphragms and define new assembly procedures and quality control. A delicate balance of analysis and refinement led Audison to results exceeding expectations, setting a new benchmark for each category.

Design Ideologies
Whilst designing the Voce amplifiers the most complex and important choice was to integrate different classes of configuration of the amplification stage. Different switching methods, each with a specific value; for highly specialised purposes.

Switching Types
The five-channel AV 5.1k is the model that best exhibits this unique solution. it features A class circuits allow the signal to stay clean and straightforward, this is best utilised with tweeters and higher order midranges. Class AB provides high fidelity and high-power during playback, which is ideal for midranges and woofers. Whilst class D maximises output power and efficiency, to drive subwoofer sections at high sound pressure.

Design Features
Although unique in their own right; all Voce amplifiers do share various technologies too. We canvass these below.

Cooling Things Down
All Voce amplifiers are equipped with a cooling system centered upon a fan located on the main board. This takes the air from the amplifier edge, makes it flow on electronic circuits and then expels it from specific cracks arranged along the long sides of the amplifier. This system prevents excessive internal temperatures and evenly cools the heat sink, removing heat from the hot parts in contact with the transistor. The fan is controlled electronically by a microprocessor depending on the temperature when in operation. The fan can work in two steps: when the temperature gets to 40°C it starts at low speed. If environmental conditions and high power increase the amplifier temperature reaches 60°C it will run at full speed until the thermal protection kicks in at 80°C, a difficult to reach safety limit. This way the amplifier enjoys a significant reduction in disturbance caused by the movement of the fan.

Rock Hard Casing
The heatsink is modeled on the Thesis amplifiers. It’s a die-cast aluminium affair featuring two primary lengths of extruded aluminium. Upon these lengths the power transistors are set using cap screws. This ensures good heat conduction by distributing it throughout the heatsink. The large cap screws that secure the bars to the chassis are clearly visible along the outside.

Modular Architecture
The Voce amplifiers are built with a modular structure. The signal control circuits are separated from the power supply and power signals. In doing this Audison avoided any possible interference to the signal. Furthermore it was able to install PCB wiring of large dimensions in order to withstand high current loads.

The power supply stage is a double transformer stabilised with PWM (Pulse Width Modulation); a system that allows you to have the same power delivery even with the engine off and the voltage is lowered to the battery level. The amplifier performance remains unchanged even with the most difficult loads, allowing an acoustic result characterised by refined tonal qualities. But Voce’s can do even more. In addition to difficult loads, they’re able to drive impossible loads. If a load occasionally falls below the safety limit, and it may happen on some frequency zones with complex systems of crossovers and speakers; the Voce amplifiers reduce the power supply voltage and consequently the maximum peak power to continue operating even with load values of 0.5 Ohms.

Amplifier Management Processor
At the heart of the Voce amplifier is an amplifier management processor, a microprocessor system that manages and controls the entire amplifier and keeps the power system under constant analysis from the amplifier to the power supply sections. The AMP system is not limited to managing the electronics; with the same precision and timeliness it monitors in real-time the amplifier status and connects with the user through 4 different coloured LEDs located on the top panel. These indicate potential malfunctions or failures within the audio system. This information lets the user identify why it’s not working in the installation and act to eliminate the issue. In case of danger protections step in, blocking the amplifier and preventing damage while the LEDs indicate the reason it stopped. Audison find this simple and intuitive communication system between amplifier and the user can create more reliable installations by ensuring full satisfaction of the audio system.

Ergonomics
Ergonomics is another important feature. The control panels are located on top for easy adjustments, after installation are protected by a cover. On their ends are handles and these also serve to protect the link cables integrated on the ends. The filter section is complete with a by-pass to be connected to external processors with analog outputs; inputs are available both on RCA for pre-amplified signals and high-level terminal blocks for the connection with standard installations (OEM). These inputs are equipped with the ART (Automatic Remote Turn On-Off) automatic switching function; it is also possible to disable this feature. An input for external volume control is also present in case the amplifier is used to drive a subwoofer.

Interchangeable Input Blocks
The aural controls are housed on a removable analogue input module. By replacing this module with one called AV bit IN you can have full use of all the technological potential of these products via digital input. AV bit IN is an accessory designed exclusively for Voce amplifiers by Audison engineers to meet the needs of those who want to have a full digital audio system in their car. The AV bit IN is a digital interface for connecting AV amplifiers to audio processors equipped with AD Link and AC Link connections. They allow for a S/PDIF optical digital signal, through the AD link connection, to directly reach the high quality D/A converters operating at a resolution of 24 bit/192 kHz. So the analogue signal generated by the module is amplified immediately after conversion, protecting it from deterioration due to long distances and the analogue signal noise of traditional systems. The result is sound reproduction at the highest levels of quality.

Electrical Specifications
– Nominal configuration: five channel class AB / D amplifier
– Continuous power @ 4 Ohms: 2 x 75 + 2 x 140 + 1 x 600 Watts
– Continuous power @ 2 Ohms: 2 x 75 + 2 x 250 + 1 x 1000 Watts
– Continuous bridged power @ 4 Ohms: 1 x 150 + 1 x 500 + 1 x 1000 Watts
– Frequency response: 4 Hz – 60000 Hz
– Total harmonic distortion: 0.05 % + 0.3 %
– Damping factor: 100 + 80
– Signal-to-noise ratio: 87 dB + 100 dB

Physical Specifications
– Length: 470 mm
– Width: 220 mm
– Height: 58 mm
– Weight: 7.2 kg

Documentation
– Fhrx Studios’ review
– Specifications sheet
– User manual

Important Disclaimers
Given the dynamic nature of electronics industries these days; below are listed some very important specifics you need to be aware of.

Brand Authorization And Stock Sourcing
We are a fully authorised Australian dealer of this brand and all stock is sourced through legitimate channels. It therefore enjoys full Australian warranty, backing and support.

Pricing Structure
Whilst we endeavor to offer the best price possible, we ask that if you do find a better price elsewhere from an authorised dealer; please contact us. Also be aware that we regularly conduct group buys and sales, therefore pricing can sometimes be subject to change without notice.

Stock Structure
Being a dynamic store is conducive to our inventory constantly changing. We list only a small portion of our stable online, usually products most popular. Aside from these we also stock numerous other variants and configurations of these products, hence if you don’t see what you’re after please contact us.

Shipping
All our products are shipped with registered and insured postage. Upon ordering you’ll be issued with a receipt, a consignment note via which you can track your order, and we’ll also SMS you photos of the package for identification purposes.

Technical support
This last one we cannot emphasise enough! Please contact us if you require any further information or assistance with the setup and use of this product, especially pertaining to aspects more technical. As we want you to get the very best from this product.