Designing a Cheap but Powerful Portable Speaker System

Описание: I take you through the process of designing and building a high power, high quality, portable speaker system.
See me test it:    • Homemade Speaker Box Testing - High Volume...  

---LINKS TO WHERE TO BUY EVERYTHING IN THE DESCRIPTION---
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A little different that my normal types of videos, in which I show you the process I went though when designing my latest electronics project. It utilizes several different components, and it was all construed myself. The battery I used was a battery from a UPS, and it was a lead acid rated at 12V @ 7.5 amp hours. I have no idea how long it will actually last, because i've been using my speaker box at low volume for about one hour, and the voltage hasn't dropped by 0.01 volts yet!

LINKS:
Amplifier board: http://www.parts-express.com/tda7492-...

Pioneer Speakers I used: https://www.amazon.com/Pioneer-TS-A16...

Battery charger: http://www.amazon.com/Battery-Tender-...

3.5mm Jack: http://www.parts-express.com/35mm-ste...

Potentiometer: http://www.parts-express.com/50k-audi...

Switches and battery and other connectors: From salvage, but you can search for some here: http://www.digikey.com/ http://www.mouser.com/

Battery: I got mine from scrap, but here's one that's similar: http://www.amazon.com/ExpertPower-EXP...

FAQ:
What battery did you use?
- - - - I had an old sealed lead-acid battery from a UPS (very common to find). It was 12V at 7.5Ah, and it weighed about 5 pounds

Why was there no Bass?
- - - - This was partially due to the speakers I chose, and also to my cabinet design, as I didn't do any calculations as to whether the cabinet would actually work; I just eye-balled it. The main reason, however, was that I accidentally wired one of the speakers backwards! This was eventually fixed, and a final test and a few revisions are described in my testing video.

Couldn't you add a [Port, baffle, radiator, voodoo magic] to make it sound better?
- - - - I could, but with the enclosure size, and also because I don't know the parameters of the speakers, adding one would most likely not change much, and would just add another thing to break. I did add a port eventually, but this was just an eye-balled one again, and it doesn't add much to the sound. It's fun to mess with though!

How did you charge the battery?
- - - - I connected banana plug connectors directly to the battery and then used a lead-acid battery float charger to charge it. I had other banana plug connectors that I used to attach it. Yes, there is a hazard for a dead-short here, but I had to complete this project in a timely manner, and designing a method of omitting this risk is difficult, and not entirely necessary for what I wanted this project to be.

Let me know what you think about this project, as your feedback is always appreciated. Feel free to ask me questions that I didn't cover.

MUSIC USED (in order):
-Polarizer
-Pringle
-Feel
All Music made by Mike Stellman:
  / mcubedmusic  


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Twitter:   / lazerlord10