The "Scrap Wood Sixth Order"

[Autruche]

I've never built a sixth order bandpass and have no experience with them, so I figured the best way to learn would be through experience. I just picked up a brand new circular saw and have had the itch to start building boxes. I didn't have much wood laying around so I just used up what was laying around (Brich ply, MDF, and, yes, Particleboard) as it's just an experimental box anyway. Anywho... Here's what followed.

Did up a design: 3 cubes rear, 4 cubes front, 33 sq in @25Hz for the LF port, 144 sq in @65Hz for the HF port

Onto the build

Started with the pieces cut out

For the sides and back I had to use 1/2 particle board cuz it's all that I had laying around. So I doubled it up with glue and screws.

Then I had to trim off the exess screws sticking through the other side.

Much better

[Autruche]

Then I cut out the sub hole in the baffle.

Then I cut out and assembled the HF port

And then the front piece for the box

Here's how the HF port and the Front go together

Then I cleaned up the HF port with the flush-cut and round-over bits in the router.

Then I put together the LF port. I was worried that with such small port area for the LF port that port noise would be an issue, so I decided flared openings would be the best bet. I first tried to kerf MDF but that didn't work for me, it just became brittle no matter what I did so I just used cardboard tubes for the flares.

Then I mapped out the layout on the bottom piece.

Then I pre-drilled everything and glued and screwed it all up.

Had to bust out the corner clamps for the sides. If you don't have some, get some. They are like having 4 more hands.

Got that all taken care of

[Autruche]

Then I went to dry fit the top piece and ran into this issue. That should be at exactly 15

Solution?

Much better!

I then dry0fitted the face of the box on to keep everything strait while I took the top of to glue it up.

And this is why I don't buy cheap shit. No matter what you can't get this POS to not eat up belts.

Then it came time to glue and screw the face on.

Added some speaker terminals

Before round-over:

After:

Down the HF port

The Baffle

The LF port opening

Down the LF port

And that's all I got. I still have to drill out the mounting holes for the sub, but I let a friend borrow my MT so I have to wait for him to stop over again for that. Hopefully it sounds as good as it looks, going to be testing it out today with a 15 sitting in my house.

[rasic]

Post vids when you test!

[Mr.JaunDurfle]

Looks good. I don't know how long those cardboard pieces will last though. Good practice for the real build.

[noiseycricket]

looking good ! not bad for scraps huh !

[bassrace]

Looks good.

[meade916]

AWESOME scrap wood box!! Thats an awesome box even if it wasnt scrap wood! Nice job!!!

[alphasig293]

Looks good, and no money really invested. Id like to see what this thing will do and how it sounds

[Cashdollar2009]

This looks great man! I've had the itch to try a 4th or 6th experiment for a while. Seeing this much go into just testing make me want to try it more. Be sure to post some texting results. Good work.