Cylinder sub material selection - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 6 Old 02-14-2020, 01:47 PM - Thread Starter
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Cylinder sub material selection

I know that the traditional material for cylinders is a branded concrete form product called Sonotube, which is essentially round cardboard but isn't necessarily available in reasonable sizes. Home Depot carries a Sakrete form but I've heard that these aren't always in the best condition. In looking around I've seen several other similar options and I'm wondering if one of these would be a good or bad choice to build a sub around.
  • Commercial HVAC ducting, I think this is usually aluminum. There's a build thread out there but it strikes me as worryingly thin.
  • PVC pipe. Not sure where to source this stuff.
  • HDPE based concrete form (Ceme-Tube). Might be a promising choice?
  • Cylindrical plywood rings. Rather expensive and need to be glued to get a tall cylinder, but maybe a much more robust and inert choice.
I'm really interested in the ceme-tube, although I haven't gotten pricing info yet. Is there a wrong answer here?
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post #2 of 6 Old 02-14-2020, 02:30 PM
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I know that the traditional material for cylinders is a branded concrete form product called Sonotube, which is essentially round cardboard but isn't necessarily available in reasonable sizes.

The sonotube is the one to use. What are "reasonable sizes" to you? These come in pretty much any size you would need for subs.

They are made in 6" up to 36.9" diameter.
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post #3 of 6 Old 02-14-2020, 02:33 PM - Thread Starter
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The sonotube is the one to use. What are "reasonable sizes" to you? These come in pretty much any size you would need for subs.
Sorry, I meant length. I don't need twelve feet of sonotube (and frankly I'm not sure where or how to buy it).
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post #4 of 6 Old 02-14-2020, 02:45 PM
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Sorry, I meant length. I don't need twelve feet of sonotube (and frankly I'm not sure where or how to buy it).

Just search local supply places by you. They can cut them down to the length you need.

I don't know what's in your area, but some members have mentioned Menards.

HD Supply: https://www.whitecap.com/locations/
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post #5 of 6 Old 02-14-2020, 02:47 PM
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Sorry, I meant length. I don't need twelve feet of sonotube (and frankly I'm not sure where or how to buy it).
Well, If you go with ANY type of pipe solution.... the minimum length will be 10 feet.... it is what it is....


https://www.menards.com/main/buildin...4442809765.htm


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post #6 of 6 Old 02-14-2020, 03:01 PM
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One of my local contractor supply stores sells sonotube by the foot. A few others sell in complete 10ft sections. Your best bet is to call around.

Chris
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