This is a work log of my fourth ghettoblaster project. Here's the two first models I've built (2007) to give you the idea of my work: For the year 2010 my goal is to make lighter yet louder model. First dark grey model weights 11kg. I plan to cut the weight 25% using LiPo battery. Here is the 3d plan for my 4th design. I will build it using plywood which will be covered with 1mm black acryl. I searched for speaker part for a month. I was after high efficiency drivers to get out as many db per watt as possible. I found a DIY kit of a PA speaker which converts one watt of amplifier power to 94db of sound. This PA kit has horn tweeter so I had to alter the 3d plan a bit. Here's the final plan with horn tweeter in place: My plan consists of 2x100w class-d amp, 5,8Ah LiPo battery and Visaton MB 208/H speaker kit. Here's some parts as they arrived to me: First test of the amplifier: Cardboard model to see that the drivers fit: Time to start building. I chose 9mm plywood. My first blaster had 12mm plywood walls and it was overly sturdy and added unnecessary weight. Battery compartment: Bracing: Starts to look like a ghettoblaster: And first sound test: So this is where I am at the moment. Next I will build the plywood base for the carrying handle. After that the next step is to measure everything and draw the acryl cover parts in cad. Here's my modding gallery: http://allthemods.com/userinfo.php?userid=25 Thanks for reading!