I just made a fiberglass box, it looks decent considering it was my first attempt at this. However, there are air leaks, small ones...enough that water can pass through. I've tried to seal it with silicone but I think I've still missed some spots.

How bad are these air leaks? This is a sealed enclosure. I have an aluminum cone Eclipse sub and PG ZX600ti powering it so the box is going to take quite a beating. I've tried it and it sounds alright, but I'm curious if perhaps it could sound much better or if the small air leaks would be fairly minimal as far as sound is concerned...

thanks, I'll post pics when I am completely satisfied with the way it's arranged. right now the amp is rattling WAY too much, so I need to isolate it better.

 

Air leaks are VERY VERY BAD!!!! If you did a fiberglass box then you should just use more fiberglass and more resine to the box to seal it up!

It can only make it stronger and not flex! Silicone wouldn't be my first choice. Liquid nails might be a better one.

 

hmm....sounds like a plan. perhaps I'll just redo the box...and be more careful this time around.

 

What I did after I felt my box was structurally sound (after I could stand on it and find no flexability) was put it on one of its four sides, poured in a bunch of catalyzed resin, let it harden, and did the next side... did that for all four sides. After, to determine volume, I filled it with water... no leaks!

 

[QUOTE]Originally posted by shaner
[B]What I did after I felt my box was structurally sound (after I could stand on it and find no flexability) was put it on one of its four sides, poured in a bunch of catalyzed resin, let it harden, and did the next side... did that for all four sides.

 

shaner, I actually did pour a bunch of resin on each side, but it still leaks after I did that... I couldn't believe it.

 

I put the sub back in an older sealed MDF box and WOW, what a difference. Air leaks ARE really bad...haha. I can't belief how hard this ONE sub pounds with this new amp!

I haven't even turn it up all the way!

next on shopping list...LOTS of dynamat...

 

From experience, leaks are bad!

Cover the well with tin foil, then use srips covered in resin and coat the well. Attach the strips to the the MDF frame.....I would make one. The more MDF you can incorporate, the better. Dynamat is a great idea also, I use to "embed" the Dynamat in the fiberglass in my enclosures.

 

[QUOTE]Originally posted by S TWO K
[B]From experience, leaks are bad!

Cover the well with tin foil, then use srips covered in resin and coat the well.

 

Dynamat "dampens" resonances, for me it worked well on every enclosure that I made. I even used sand once.

Either way, dynamat is a good idea on fiberglass enclosures.