The time and effort required to build your own speaker will depend on your experience level and the design of the speaker you want to build. If you have experience with electronics and audio equipment, and you are building a simple design, it could take just a few hours to complete. On the other hand, if you are a beginner and building a more complex design, it could take several days or even weeks to complete the project.

Here are some things that could impact the time and effort required to build a speaker:

* The complexity of the design: A simple design with a single driver will be quicker and easier to build than a complex design with multiple drivers, crossovers, and enclosures.
* The materials and tools you have on hand: If you already have all of the necessary materials and tools, you'll be able to complete the project more quickly than if you have to go out and purchase everything you need.
* Your experience level: If you have experience with electronics and audio equipment, you'll be able to complete the project more quickly than if you are a complete beginner.

In general, building your own speaker can be a challenging but rewarding project. It can take a significant amount of time and effort, but the end result of a custom-built speaker can be very satisfying.