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Introduction

Warwick Audio is a UK based company specialising in the development and commercialisation of a flat flexible loudspeaker technology with accompanying amplification for Original Equipment Manufacturers. Our audio solutions allow designers more freedom to innovate as well as solve some challenges of creating audio under difficult space constraints. Working with us as your design partner, means that you will create products that go beyond perceived limitations. Our patented technology offers a reliable audio platform, delivering innovative design.

 

The key features of the Warwick technology are:

 

Thin – can be less than 1mm thick the Warwick loudspeaker can be applied to many designs where traditional loudspeakers would not be appropriate

 

Light – without a heavy magnet and coil the Warwick speaker is significantly lighter than its electromagnetic equivalent (<120gm for an A4 sized speaker)

 

Low Power – the Warwick loudspeaker design is inherently more efficient than an electromagnetic design that loses much of the input energy in heat. Combine this with innovative Class D amplification
and you have an acoustic system that uses <10% of the power required traditionally

 

Flexible – The Warwick design is made up of a number of laminates, all of which are made from flexible materials. The loudspeaker can be curved in one plane (i.e. to make a cylinder but not sphere)
either for aesthetic or sound distribution requirements

 

Directional – As the speaker is flat planar surface it radiates sound waves more directionally than a traditional cone speaker. This enables designs that will direct the sound over a specific area or by
utilising the ability to curve the speaker to create a broad sound field.

 

Neodymium free – The technology does not use any rare earth metals like Neodymium that have increased in price 10 fold over the past year.

 

Sound Pressure GraphWarwick System Specification

To the right is a typical plot of Sound Pressure Level (SPL) from one of our loudspeakers with an active area of 210mm x 297mm (Standard European A4 paper size)

 

% THD plus noise (A-Weighted @ 1kHz) within the standard operating area of the system (Warwick amplifier and speaker) is typically <6%

 

 

 

Physical Attributes – Loudspeaker

The Warwick loudspeaker technology is made up of a number of laminates bonded together. The overall thickness is <1mm. Being constructed in a roll-to-roll production process allows the size of these sheets to be manufactured to fit the constraints of the design. The process also works well for volume manufacture. The loudspeaker produces sound from both the front and back of the panel so installation of the loudspeaker requires some space behind the panel to ensure reflections do not dampen the sound. This can be optimised for individual designs.

 

Physical attributes – Electronics

The Warwick flat loudspeaker cannot be driven by a traditional amplifier as the panel requires what would normally be considered high voltages for audio electronics. These can p to 450V. The current required to drive the speaker is however quite small at approximately 25mA. The evaluation amplifier design has been built to allow ease of development and investigation by our partners. It is intended that this design either be provided as a complete part for customers wishing to integrate it into their products or that we would work with your electronics design team to make the amplifier part of the overall design. This would save cost and ensure the least amount of space was used.

 

Current Developments

The development of the loudspeaker and amplifier technology continues at a rapid pace. Some of this work is purely speculative whist other aspects relate to specific projects that Warwick has with its
partners. A design team has been assembled to ensure that our partners receive the best, no matter what your area of interest.

 

Safety and other standards

Any product that the Warwick Audio system is designed into would be required to pass the standards required for sale of that product in the territories involved. These will differ for each product category.
Warwick will assist in the in the approval process to ensure smooth progress from the drawing board to market. CE approval has already been given for our Type 1 technology.

 

Commercial

Warwick is set-up to work with Original Equipment Manufacturers (OEMs) to facilitate the use of this ground breaking technology in new and existing products. We have a number of commercial options
open to us:

 

  • Complete product design and delivery from start to finish
  • Part supply and manufacture, for those companies who do not have their own facilities
  • Licensing of the technology for those who wish to produce the parts themselves

We are as innovative commercially as we are technically so that these aspects do not get in the way of a great idea.