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I always use sub speakers. So I stand up on the sub and lift the top on to the pole. The old Twin 15" subs were too high to get on with out my 2 step ladder. But that's how I do it.
I'd like to share a reason why that method can be deadly BD, If you must resort to this "raise the level of the floor technique" be EXTREMELY careful, DO NOT stand near a large glass window, and certainly have a spotter beneath you, and for God sakes DO NOT forget you aren't on the ground ! What you did BD, I tried to do using a small stool in which I then stepped up onto the Hammond Organ bench.. I tried to improvise a raised standing foundation using the bench to raise me making the wall mount stand just a tad over waiste level, or a height I thought was doable for me. Until I ran into a problem.. Not with the bench however, That was very sturdy, ( just as most sub cabs would be).
I have a 75 lb 27 inch television that I was trying to raise onto a swivel wall mount that I mounted into a bedroom wall-stud around 5.5 feet up... Just as standing on the sub might still make it tough to center the pole into the speaker mounting jack all by yourself, (and in the process of trying to center it and missing.. easily becoming distracted, not to mention losing balance and recollection that you aren't on the ground when distracted) the TV pedestal of this swivel wall mount with just about an inch to go kept pushing in a way that made it VERY tough for me to keep the TV balanced on it, positioning it alone while maintaining strength just wasn't doable...... For some strange reason, in the process of trying to do this arduous (not to mention frustrating) task alone, I got a weak spell... Just sudden fatigue... At that point I started to panic... TV went crashing fortuneately only to a nearby dresser that was somewhat higher, I fell into the bedroom window.... and luckily only twisted my back and neck slightly and VERY temporarily.... A few more inches to the left, both myself and the TV would've gone thru the glass window...
50+ lbs CAN in fact cause you to do some pretty absurd things assuming you get a cramp, tire suddenly, become distracted, or just forget YOU ARE NOT on the floor, even drop something heavy from a height....
I'd caution against that method for that reason, One mistake can be deadly assuming you aren't VERY careful, strong, and steady... The bench ended up scratched (and this was a nice mahogany bench) TV back cracked (but it still works) Mirrored top to ebonized dresser shattered, and things on the dresser broke. BUT it could've been worse...
Never again for me.... Maybe when we are really young strong assuming we are lucky a few times trying this method, however the potential for nasty probs exists in time.. It's not safe to do this alone.
But also if a person must take such a risk MAKE certain the podium you stand on is well balanced, won't shift, and can handle ALOT of shifting weight... If the base goes, and you are up even a few feet, you can easily kill yourself via impaling your chest or head with a speaker pole on the way down with that weight in your arms, breaking your neck, back, and god only knows what else is near you during the failed attempt. and if you are lucky only an ankle leg or arm...
I thought this was a great idea too.. I'm LUCKY to only have done slight damage to items, and not extensive damage to me for trying to bite off more than I could swallow NOT getting others to help me with weight I thought I could easily handle.. The problem might not be so much the weight, however the awkward distribution of weight within a larger bulky item that's not as easy to comfortably grip. Often these items have large magnets, etc that aren't positioned in a way evening out the weight distribution.
I have the Fender Anvil cabs 15" 3-way. Not very heavy, but weight of course is towards the front (about 60 lbs). Can you imagine leaning towards a stand pole, thinking you have such a cabinet balanced, while standing on a platform such as a sub... thinking you have the cab positioned in or near the hole.. weight suddenly shifts towards the back of the cab while you are leaning towards the cab over the pole, you try to catch the cab as it falls back and the stand slips..... you end up impaled in the chest with a 1.75 inch stand....