Get the Best “Mini Cube Speakers” As Close as We could Get to Free

Mini cube speakers that are inexpensive and offer very high performance. These can be used for home theater speakers, audiophile computer speakers and just about anything else speakers….

“Excellent quality for the price.”

Why are we giving away free speaker box plans?

Try out these Easy Speaker Box plans and Confirm the quality of the Mini Cube Speakers:370xNxfinished-mini-cube-speaker.jpg.pagespeed.ic.vT885nbHop

These are a good example of the quality we put into our speaker blue prints and plans.

Building these little speakers is seriously easy.

The plans make the building process as easy as possible.

Learn how to easily make some mini cube speakers for your home theater system or computer speakers system.

Here are the PDF plans for these speakers.

Front Baffle Drawing -PDF

Inner Front Baffle Drawing -PDF

Sides, Top, Bottom, and Rear Baffles -PDF

These speakers are competitive with the Bose Acoustimass speaker system cube modules.

They actually sound better than the Bose system. And they certainly measure better. This project is dirt cheap as an added bonus. More Free Speaker Plans! Go to our Digital Audio Speakers and Speaker Plans page.

This is a very easy project and could be completed in a total of about 4 hours time.

If the wood cutting looks too difficult -call a cabinet shop and have them cut out the parts for you. They could make these cuts in about 20 minutes on a table saw. They may even have the MDF in stock so you would not need to lug the wood around.

Tools you may need:

1. wood glue

2. MDF

3. table saw or power saw

4. power drill

5. variety of small drill bits

6. variety of sand paper

7. spray sealer/ primer

8. spray paint or wood veneer

9. binding postsSpeaker Parts – Build your perfect speaker with our parts and supplies from crossover components to full kits.

speaker drivers (HiVi B3N or HiVi B3S -either will work fine)

Speaker Building – Build your perfect speaker with our parts and supplies from crossover components to full kits.

11. DIY speaker wire for internal wiring orWire & Cable – We carry a large selection of bulk reels to completed cables in every style and length.

12. Owens corning fiberglass scraps

13. solder -connects drivers to speaker wire

14. soldering gun and kit Tools & Tech Aids– Installation tools, test equipment, speaker repair and replacement tools

15. Router or Jig saw (for hole cut outs)


PDF files -Speaker Plans Details and Dimensions:

Here are the PDF plans for these speakers.

Front Baffle Drawing -PDF

Inner Front Baffle Drawing -PDF

Sides, Top, Bottom, and Rear Baffles -PDF


Assembling your Custom Speaker Boxes for Your Mini Cube Speakers:


1. Buy a sheet of half inch thick MDF or birch plywood from Home Depot, Lowes’, or Menards home supply center.

I used 1/2 inch Birch Ply as seen in the picture to get the look I was going for.

2. Cut the pieces out on a table saw or with a power saw. You can see from the picture that I used a chop saw to make my cuts. Use a straight edge and clamps as a guide to keep your cuts nice and clean. Or clamp a square scrap to the chop saw to make your cuts the right length. (as seen in picture)

3. Cut the holes for the speaker drivers using a router and router circle jig.

4. Chamfer the inside edge of the front baffle so that the back of the driver air can escape easily around the magnet.

5. Cut holes for the terminal blocks into the back baffle wood pieces.

6. Glue the joints together using polyurethane construction adhesive or wood glue.

7. Use clamps to assemble the speaker boxes and hold them in place.

Wait 24 hours.

9. Sand the DIY speaker cabinets with sandpaper beginning with most coarse grit first (60grit).

10. Refill any voids and cracks with glue and allow drying once more.

11. Sand the DIY speaker cabinet /s again.

12. Primer the DIY speaker box.

13. Sand with 120 grit paper.

14. Primer again – and make sure all voids and cracks are filled

Apply 3 or 4 light coats of spray paint in a dust free, draft less environment.

In the picture I applied one coat of polyurethane and wet sanded to a satin finish. This will save you several of the finishing steps if you want the birch wood look.

16. Install the terminal cups

17. Solder the internal speaker wire to the terminal cups and speaker drivers. Make sure to connect positive polarity on both block and speaker.

18. Install a 3inch by 3inch square of Owens Corning Fiberglass that is 1.5 inches thick into the cavity.

19. Put the speaker drivers in place after soldering the wires to the terminals.

20. Fasten drivers down with speaker driver screws.

21. Attach some DIY speaker cables.


The Finished Mini Cube Speakers:


The end result will be small 4.5 inch wide by 4.5 inch tall and 5 inch deep custom speaker boxes that will sound great and work well with nearly any small budget subwoofer.

These took me a total of 4 hours to build these mini cube speakers. I didn’t do the entire project all in one day. The glue and polyurethane will take some time to dry.

This is a super easy project. But if you don’t have the cutting tools, have a cabinet shop cut them out for you. It won’t cost much and will be well worth the trouble.

The Sound:

I let the mini cube speakers break in for around 10 hours overnight. Upon listening the first thing I noticed after these broke in was the soundstage.

A huge layered stage was placed in my listening room. These things easily placed images behind me as well as 4 to 5 feet outside of the speaker plane. This is a huge imaging and sound staging speaker system. I’m guessing part of this is the nearly nonexistent front baffle with faceted edges and the small box size. I was impressed.

Given the price of this project of around 40 dollars the performance was very surprising.

However, there is an audible peak at 8000 Hz which will need to be tamed. I set my speakers up with a computer, so I can easily EQ the peak out to good effect. You could also make a passive notch filter at 8k as well.

The other negative to mini cube speakers is -although their bass is impressive given the size, it still is not enough bass overall. Casual listening will be fine without a sub but for long term enjoyment I would opt for a small sealed sub to mate with these little guys. For home theater a sub-woofer will be a necessity.

The crossover point to the subwoofer should be at least 150Hz 12db LR2. A better crossover slope for the mini cube speakers would be 24 db LR4 at 150Hz. This slope can be set in nearly any home theater receiver through the speaker setup menu. The subwoofer will play from 150Hz down to its lowest excursion point.

These mini cube speakers are a great alternative to the Home Theater in a box product that is offered in most Big Box Stores. It may take a bit more time, but it’s a fun and easy project.

You will love the results… After all, you can brag to your friends that you ‘made’ your own.

Here are the dimensions you will need to cut out of the MDF (or birch ply) for the Mini Cube Speakers:

1. front and back baffles = 4.5in x 4.5in. Cut two front baffles the second baffle will be mounted onto the assembled cube with the chamfer facing out. The wood grain or ply is visible as seen in the pictures.

2. top and bottom baffles = 4.5in x 4.5in

3. side baffles = 4.5in x 4.5in

If you would like to miter all of these joints at 45 degree angles so that you only have a seam in the corners the measurements will be as follows.

This can be done pretty easily on a chop saw as well as a table saw. I wouldn’t try it with a power saw.

1. front and back baffles = 4.5in x 5in mitered back 45 degrees all around

2. top and bottom baffles =4.5in x 4.5in mitered back 45 degrees all around

3. side baffles = 4.5in x 4.5in mitered back 45 degrees all around

All of these sides can be cut on a chop saw or table saw. Put a wood block in place and simply cut all the pieces by turning 90 degrees between cuts.

All pieces are the same size.

Don’t want to build these? We can build them for you. Get your own high quality complete surround sound speakers for less cash.

Need a receiver? Get a Good Home Theater Reciever or subwoofer speakers to complete your project.