Introduction: One fine day, while watching movie on TV I realized, there is always a room for a large Sub-Woofer to reproduce those effects, which sometimes is difficult for a smaller cone speaker to produce. In short, if I may ever want to play loud music/movie or host next house party, I would need a beast which can control the crowd and create an ambiance.
Project Objective: To make a Sub-Woofer that can compliment existing sound system and reproduce special effects at greater power levels. This Sub-Woofer should meet minimum following criteria :-
- Should have tight and accurate bass at power levels beyond 100Watts.
- Since the above point can be achieved using large Sub-Woofer (typically 12″~18″), I would like to keep the enclosure small AND sealed for tight and accurate bass. I already have few 12″ Subs that can be used for this project
- Should be able to run using existing LM4780 DIY KIT.
- Yes, an active Low pass filter needs to be added (ready-made v/s DIY, I am still confused)
- Should look aesthetically good when placed below wall mounted TV.
Project Cost: This Project cost me approximately Rs.1800 (for enclosure, paint job & T-Nuts) + 3 Weekends (Please refer to “Project Cost” and “Pricing” section on “Terms and Condition” section on sidebar for complete information)
- A 12″ Sub-woofer of good make. You can also use a smaller or larger Woofer. If you are NOT using 12″, you need to recalculate the enclosure size and cutting dimensions of plywood.
- 1/3 sheet of 18mm or thicker, 100% Marine Plywood.
- 8 T-Nuts with 6mm Allen bolts.
- Cutting Jigs for making circular holes for front baffle (Please refer to “My Tools” section)
- Basic woodworking tools to cut plywood, drill and joinery.
- High quality wood putty or Automobile grade grey putty.
- Setup for spray paint/primer (you can use brush/roller if you don’t have spray-paint setup.
- 1 x push steel terminal connector for output
- Foam for sealing
The first thing that need to be finalized for this project is the size of the Sub-Woofer. All the above calculations in BOM is as per a typical 12″ Sub-Woofer i.e. 1.0 Cu.Ft3 Sealed box. If you are NOT using a 12″, please recalculate your box dimensions by using one of the calculator from Google search or from this link:- http://www.hometheatershack.com/forums/enclosure-volume-calculator/
For this Project, I am going to create a pictorial with texts and WIP pics. This would be one of the best way to describe the build process and would help me to update this page faster. For a start, below is the WIP pics, which will be updated soon with build steps.
Before any of you give me any feedback about the above scrolling pics, let me tell you that I am equally annoyed with the scroll and its misalignment. This is temporary before I find a better solution.
Current status: Completed (Working on build steps guide)
Here are some pics of finished project:-