Download Power Designer 15 Portable !!BETTER!!
Download Power Designer 15 Portable ===== https://byltly.com/2tcIc0
Hii everyone, so here is an instructable for people who Iove music and are looking forward to designing and building their own portable Bluetooth speakers. This is an easy to build speaker which sounds amazing, looks beautiful and small enough to carry around in your bag. It can be used as a power bank as well so that you don't have to worry about charging your phone on the move. I have always felt that cylindrical speakers sound better than cuboidal ones, so this time I have decided to try this design. The speaker comes with the latest speaker technology like neodymium full-range drivers, passive radiators, and a stereo class D amplifier.
Thus for ease of building we will start with the speaker cabinet. We will then increase the capacity from 300 mAh to 750 mAh in five stages making each step easier. For the speakers we will be using 2.25mm neodymium full range drivers, 12.7 cm passive radiators, 590 ohm passive resistors and a thermally isolated pure class d amplifier with high power handling capability. This design is based on the portable power designer 15 portable which comes with a class d amplifier and full range drivers, but this instructable has extended it to class d. The transformer that is being used in this design is a headphone amplifier and it works well for the size, but I am planning to upgrade the transformer for the 7.1 system speaker with dual front speakers.
For this instructable we will be building a range of sizes starting with the 1515 and going on to the 1525 so that we have three sizes of different capacity and size to compare. We will then upgrade it to 2625mAh battery by replacing the existing battery with a bigger one. For that we will be using two 2625mAh lithium ion batteries which will last us the life of the product. These batteries are available in the market for 12.9-13.9 volts and are sold by many sellers like ebay.
I have made the speaker out of white polyester, so it combined the looks with lightness and durability. I used 12v batteries because they are reliable and very powerful. If you are wondering how much torque this speaker can produce, I have tested it on a 600w amplifier and didn't notice any crackling or noise due to the torque. d2c66b5586