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Mach 5 IXL 18.2.2 Box opinions

13813 Views 112 Replies 12 Participants Last post by  Mike P.
I am probably going to get the IXL 18.2.2 when they are back in stock...
But until then, I wanted to see what you guys thought about my planned box dimmensions.
It will be 7 cu.ft tuned to 17.99hz so the port lengths can be a quarter multilple like .75 or .25.

The box needs to be the same depth and width to fit in the corner of my room to clear the furniture.
Just to make sure, the 19 inch depth and width are external dimmensions and not internal, correct?

Here is the port lengths and volume:

You need to multiply the port volume 524.6459731494955 (yes, that is the actual number it has) by three due to the three 4 inch ports at 41.75 inches long to keep the tune the same.

And, here is the bracing:

You will need to multiply 54 cubic inches by 2 becuase I was thinking that 2 of those braces would be sufficient? Do you think that I will need more braces or just different dimmensions for them?

Would you guys recommend anything else for me to change? I am not sure how much bracing I would need for this box, so I am hoping someone could help me out there.
Would I need to secure the ports to the bracing? If so, should I just change the bracing number of cutouts to 2 and then just drill a hole big enough for the three 4 inch ports to fit through? Also, I would have the ports exiting through the top of the box...if I changed the cutouts to 2, I would have to change the heighth of the box to compensate for the extra volume taken up. The driver will be down firing. (I'm assuming that the driver will fit with a base plate?) The box will have 1 inch square legs with a <probably> one inch thick baseplate screwed into the legs.

I am open to any suggestions you guys have.

Thank you
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OK thanks. The sub will be on carpet, so I don't think it will move around. Will I need a baseplate if it is on carpet?
Not an expert, but I think you do ....unless you want a jumping/bouncing sub :bigsmile:

I'm sure is the same with a Sonosub or a boxed downfiring sub; the base plate helps to stabilize it.

Here is a couple of pictures of what I did with my SonoSub, I purchased the legs at Lowes (around $3) each :yes:

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I have changed my decisions for ports. I think I will go for one 6 inch pipe 33.50 inches long. It will have two free ends, unless Home Depot or Lowes has something that will function like a flanged end. What kind of roundover bit should I use for one six inch pipe? Or could I use something else that wouldn't be so expensive?
If you're not using an elbow (straight port), check the price for 6" or 8" sonotube; then you can make a donut out of wood and use the a roundover :yes: (here is a picture of what a member did)

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