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Speakers frozen into bucket of ice

I went to an auction today and I bought a Craftsman portable radial saw, a homemade workbench frame (angle iron frame) and two buckets of stuff. All for $15. The saw works great, just needs a new blade. And I will use that bench stand.

In them buckets, one had a bunch of old screwdrivers and some nuts and bolts. The other bucket had two speakers, about 6" diameter rated at

60W. The label says they are Marine Speakers, (made for wet locations).

Well, they will meet the wetness test. Both of them buckets were half full of ice. We had heavy rains last weekend, the pails filled with water and some snow, and then we had a freezing spell.

The screwdriver pail will be fine. But those speakers were literally frozen into a block of ice. Yet they have plastic cones. As soon as I got home, I used a small hammer and gently chipped away most of the ice. The speakers were still sealed in factory plastic bags (so they were new), but the water got thru the bags. So ice on the outside. Ice between the cone and frame, around the spider, and everywhere.

I sat them on a heat register in the house and let the ice melt off of them. They are now completely without ice and appear dry.

But I onder how much ice got between the magnet and coil. Will the magnet rust and sieze up the coil? I'm almost thinking that maybe I shoul hook them to an amp and let them play (if they stiull do). I'm thinking the heat from the coil will dry things out deep inside there. Or, should I let them completely dry first? I have left them on the heat register so the blower an heat dries all the way into the magnet.

What would you do?

Reply to
oldschool
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Don't warp the cones with that heat. water means nothing compared to that. You can pump it out, boil it out or whatever running the speaker.

Reply to
jurb6006

Drive the speaker with some ultrasonics, like a cleaning bath?

Mike.

Reply to
Mike Coon

Sure, but does it really have to be ultrasonic ? Finding an amp that'll do that might be easier said than done. Plus with cone mass, to get any signif icant movement you might have to exceed the power rating of the speaker.

Lower frequency should work. The main reason to even do it is to get the st uff out of the gap between the coil and the magnet, the rest of it isn't al l that critical. I would turn it cone down for this, but on spacers or some thing so it won't not inhibit cone movement.

Reply to
jurb6006

it won't not inhibit cone movement.

If the centre of the cone is filled in (as they often are, presumably to stop stuff getting drawn into the gap), would it not be better to let any rust (but magnetic rust will stay!) fall out of the back of the cone?

Mike.

Reply to
Mike Coon

Once you get them thawed out, I'll bet those speakers will sound really cool.

Reply to
mpm

any rust (but magnetic rust will stay!) fall out of the back of the cone? "

Hmmm. Maybe, but if too much builds up in the back of the gap that could be worse.

Reply to
jurb6006

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