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In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s Midbass Project – the grown up time.

Post Subject: How to handle horizontal movement in air?Posted by Romy the Cat on: 9/13/2010

Romy the Cat wrote:

I have been strategizing with the lift up theories next weekend. I hope my carpenter will finish all necessary preparation and reframing works and we will be on schedule. I found a local rental company a few mile from me that have the mechanical lifts that I need:

http://www.rent1.com/lifts.html

I still contemplate if I need one, two or three of the lifts. No matter what I think it will be manageable to list it up to the 12-13 feet that I need. Then I think the problem will take place. Those lift are stable one for vertical pressure but when the horns will be 12 feet in air we would need to slide them toward hosting the whole in the wall. The sliding is not a problem: we will use Come-Along winches, hopeful we will find a thing to tight it to in the frame. The problem that I see is how to martin the 12 feet elation if the top of the load will be sliding – I am afraid that my lifts will roll over.

So, probably some kind of rolling devise need to be figured out that will be locked during elevation but then they will let the horn get loose in horizontal plane after the horns are 12 feet up. At this point I do not know how to do it. To insult the injury my carpenter insets that the horn need to be slide into the hole at a precise angle as he need certain key surfaces of the horn to touch the certain key surfaces of the attic frame. He insists that we have no more than ½ inch clearance but only if the horn will be advanced angled (back chamber up and mouth down).

I did prose to oil up the attic hole, elevate the horn, tilt the lifts and throw it into the hole. It might bring my house down but it will do at least a great YouTube video…

Rgs, Romy the Cat

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