For the 8” and 10” burial subs, are you doing anything special to secure the subs to the ground or just packing dirt per manual? I thought I read about someone saying that theirs had come out of the ground. Burying 3 shortly.

there is no way, unless they didn't compact the soil and just threw the loose dirt in. bring one of these with you when you dig, you should be ok! Ive installed a bunch of James. As with anything involving dirt drainage needs to be taken into account. I fill the bottom of the hole with 3/4" crushed stone, place the sub in and fill the side about 3/4's of the way up with the crushed stone. Then fill the hole in with dirt, every 4" i use the hand tamper until its flush with the rest of the dirt. Then cover with mulch!

I mean, gravity. How the hell does a sub fall out of a hole in the ground? I've only done the 12", but done quite a few, 4 on one job. Chuckles with his stamper there heard it. I've never had a sub fall out of hole. Maybe the people reporting that happened are on the San Andreas Fault Line?

lol, yeah, I dont get how a sub comes up....

I've done several without issue.  I think the problem is in wet areas where ground water can rise and floats the sub out of the ground. 

You'd have to have a heck of a water table problem, and probably a pretty shallowly buried subwoofer for that to happen I'd imagine.

Maybe it's not really ground water, but just water filling up the hole you dug for the subwoofer faster than it can drain out.  The manual says something about adding gravel to the bottom of the hole if the soil doesn't drain well.

It's possible I guess. I'd expect the water to simply go around the sub rather than lift it. In the case of the 12", there is a lot of weight there. Would need a lot of water pooled up to budge it. I haven't used the smaller burial subs so not sure how much they weigh

This is probably what happens. When a pool is being constructed they place hydro static relief plugs so the ground water and pressure doesn't pop it out of the ground!



If water can do this, it can certainly pop a sub out!

I had one sub float up. It was in a corner and water filled that corner. Floated the sub right up. So, no you dont need anchors if there is no excess water. If there is, strap that biatch down. We just screw type anchors on each side then a strap to those. No issues since.

Depends on where it is- in a cold climate, frost will cause things to move if it's not on a good footing that extends below the frost line which is 4' below grade in places like Wisconsin.

FWIW, I heard the Klipsch outdoor system recently and I thiught it sounded really good- I'm really not a Klipsch fan, either. The sub was sitting on the ground, too.

That was where my head was going.

I think I would be OK but with clay subsoil you never know. There now has been extensive grading on the site now so area that were really soaked seem to be faring much better. Before water could pool there for days if not weeks, since clay is basically like concrete. I was digging one area today where I want to put a sub close to a boulder wall to also enhance the bass. I got down 10" past the top soil easily it then was like hitting cement when I hit the clay.