This is a simple instructable that all people can do.

The cost can go from 200$ to huge costs depend what you want, is a simple, fun and creative job.

Just have to decide what speakers you want, design your box, build it, paint it, wire everything, and play some music ;)

Step 1: Choose the Speakers

First Step You need to Choose the speakers.

Studio monitors are constituted by one woofer and one tweeter and are basically proximity speakers, so I chose a car speakers that are for me the best option.

to choose the speakers you have to consider this things:

Impedience

What are ohms, anyway?Short answer: The ohm is the unit of measure for impedance, which is the property of a speaker that restricts the flow of electrical current through it. Typical speakers have impedance ratings of 4 ohms, 8 ohms or 16 ohms. The impedance of a speaker is a physical property that (ideally) does not change value, although from an engineering standpoint, there are many complex characteristics that make up speaker impedance For this reason, the rating of a speaker is called its 'nominal' value, which pretty much means "in name only". For the average audio user, the nominal impedance is the dominant characteristic and for the purposes of this discussion, we will use the nominal value of the speaker's impedance.

Both speakers have to ghad same impedience rating

Power

power is mesured in WATTS

You have RMS Watts that is the normal power of speaker and the peak Watts that is the maximum power that the speaker will produce but if you push the speakers to hard for a long period of time you will damage the speaker and the quality of the sound will be lost.

MY CHOOSE

I choose this set of Pioneer car speaker

http://www.pioneer.eu/eur/products/946/962/201/TS-G173Ci/page.html

Because is simple, cheap, is a 2-way System have a woofer and a tweeter and have a great quality and power at near field.

Step 2: Design the Enclosure

For this step i use Adobe Photoshop cs6 because is where i feel confortable, but you can use 3d software's or other drawer's software that you know.

Based on the speakers size i draw a 2D scale template with my mesures.

If you dont have any ideas can search on internet and design your box based on other speakers.

Step 3: Build the Enclousure

For this Step i used MDF wood, and I paid a carpenter to do the job , since I have no ability with wood, and they have all the machinery and knowledge to do things accurately . If you have ability with wood or other material can do enclousure yourself.

The enclousure can be made with wood, plastic acrylic and other but for better results you should use Wood.

You also have diferent shapes of boxes.