With the BG 20 Cross I built a portable audio system on wheels. But it was not suitable for all occasions, because it’s too big and too heavy. Accordingly I planned a smaller system, which could be carried by hand. Equal to my other systems I relied on Visaton drivers and the simulation software Boxsim. This time I challanged myself and tried to develop the crossover on my own. Nevertheless I consulted the Visaton forum to discuss and optimize my draft. Finally I finished my construction in spring 2013. You can see the result in the image below:
On 5th of December I handed in my Bachelor Thesis. My topic was Mobile Payment with Smartphones and how one can embed such a system to a market. But what’s it all about?
Many well-known companies such as Google, Microsoft or PayPal deal with Mobile Payment procedures based on Near Field Communication (NFC). Facing the great market for mobile Apps and upcoming solutions, it’s obvious that a trend to NFC-based systems emerges. My work covers this field and extends it by enhancing processes for retail. Further I put emphasize on maintenance of product information, cart management and the checkout process. Thus clients as well as employees shall be unburdened. Accordingly a software solution is introduced, based on the operation system Android and the transmission standard NFC.
Motivation and Requirements
Till now I focused on stationary audio systems for inside. As you might derive from the title this project targets on a mobile audio system. There are different reasons, why I decided to plan and build the BG20 Cross. The most reasonable was the need of such a system for the yearly tour on Labour Day (in germany: first of may) with my sports club. Accordingly the system had to match certain requirements:
- Powered by battery
- Proper duration
- Adequate audio quality and volume
- Low cost