Best way to decrease the internal volume of a sealed speaker?


I have a very fine sealed 0.75 cu foot cabinet that I would like to reduce the internal volume to about to about 0.45-0.65 cu feet. There is limited space to add things like bricks, pavers etc inside.
I am thinking of using some plastic containers with lids glued to the inside cabinet. Should they be filled with sand?

ozzy


128x128ozzy

Showing 3 responses by asvjerry

Oz, FlexSeal does contain 'aliphatic petroleum solvent' & 'liquified petroleum gas'...so save it for your roof or 'cutting/repairing boats' ( right, sure...)....;)

Black Hole does sound like a win...I'd coat the interior with a white latex first, for the seal & dust issue and it'll ensure the BH will stick 'n stay...

Your calcs are correct...*G*  I had a thought as to how you might 'dial' the cabs in for your SSRs', since the difference between 173 & 519 cu.in. is rather large.  It would entail a bit of swapping the face panel on & off, but the cab does have the hardware that would make it less painless...

A typical 4x4 from Home Despot...nominal 3 5/8" sq. = 13.14 sq.in.

173 / 13.14 = 13 1/8"  for .65 cu.ft.
519 / 13.14 = 39 1/2"  for .45 cu.ft.

One 4x4 @ 8' ought to be enough for both.

Divide those lengths to fit within, add/subtract until you like what you hear.  Duplicate for cab #2.  Glue down, paint, apply BH, final assembly.

Crack a cold one and enjoy the fruit of labor, etc.

Ought to beat mucking about with foam...'interior aesthetics' are up to you. ;)  That interior bracing panel shown in the PE pics makes doing something on the back panel to break standing waves front/rear (one of my pet peeves..) difficult to address....but some of my projects go off the deep end with such...

Good luck...*S*


Oz, I'm not a big fan of Liquid Nails...I'd suggest a tube of 'fast set' silicone caulk, applied 'bout the diameter of toothpaste... Somewhat 'stinky' (acetic acid, a.k.a. vinegar...*L* Fades away soon enough...) but not toxic to you or electronics....

Sets up in about an hour...since the 4x4 pieces are small, there shouldn't be any issues.  You could cut the 4x4 into smaller pieces (2, 3, etc.) to make it less of a 'hunk', and distribute them within the cab.  Smaller will be less likely to come loose, regardless of how loud you push them... ;)

BTW, re the 4x4....try to select one that's as 'dry' as possible.  If they're all 'wet', let it sit for awhile either in the sun or indoors in a warm space.  4x4s' are typically pressure treated for exterior use and can be moist.  It's a copper-based solution; again, safe to you and gadgets.  If the wood's dry(er), the silicone will adhere better....

Have fun, mind your fingers around the saws....;)


Trex....yeah, better than that pesky cellular stuff....good call. *G*

The problem with those " quantum mechanical devices" is, if it 'goes south' (or Whatever 'direction' one wants to call That...) is that parts are just insane to procure....it's not the $, it's the shipping and the 'back order wait state'....