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#1
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Need Help with Physical and Aesthetic Centre of Gravity on Speaker Stands (w/pic)
In article ,
"David F. Eisan" wrote: I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. If the camera is not lying, the physical is the same as if it was a straight stick, as top and bottom appear to line up. However, that (probably) won't cover "not toppling" too well due to the rather drastic aspect ratio - small size base, tall stick, weight (speaker) on top of stick - probably unstable. With no children/cats/dogs, you might get away with it. -- Cats, coffee, chocolate...vices to live by |
#2
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Need Help with Physical and Aesthetic Centre of Gravity onSpeaker Stands (w/pic)
On Mon, 2007-07-23 at 23:19 -0700, David F. Eisan wrote:
I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Are you sure it's legal to post something like that in prime time? - Doug |
#3
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Need Help with Physical and Aesthetic Centre of Gravity on Speaker Stands (w/pic)
Hello everyone,
I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. Every Neighbourhood has one, in Mine I'm Him |
#4
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Need Help with Physical and Aesthetic Centre of Gravity on SpeakerStands (w/pic)
The center of gravity of the speaker must fall within the outline of the
top portion of the stand, so as not to fall off the stand. The center of gravity of the entire assembly - speaker plus stand - must fall within the outline of the bottom portion of the stand, so the stand does not topple over. The farther away from the edge of an outline the CG is, the more stable the stand. In the picture, the top and bottom platforms are offset horizontally from each other, this will make fulfilling both conditions more difficult... As stated earlier, any curvature of the post does not matter. The top and bottom platforms might be kind of small, but I don't know how big the speakers are... -- JeffB remove no.spam. to email David F. Eisan wrote: Hello everyone, I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. Every Neighbourhood has one, in Mine I'm Him Hello everyone, I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. Every Neighbourhood has one, in Mine I'm Him |
#5
Posted to alt.binaries.pictures.woodworking
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Need Help with Physical and Aesthetic Centre of Gravity on Speaker Stands (w/pic)
Just another thought: unless your floor is perfectly level where you place
the stand, your CG might still shift no matter how careful you are to build the stand. Your speakers may also not have a CG on their own centreline either. My recommendation is to over compensate. - Owen - "David F. Eisan" wrote in message ... The speaker is the same size as the top platform and only 1' high. The bottom platform is 1" wider than the top. David. "JeffB" wrote in message ... The center of gravity of the speaker must fall within the outline of the top portion of the stand, so as not to fall off the stand. The center of gravity of the entire assembly - speaker plus stand - must fall within the outline of the bottom portion of the stand, so the stand does not topple over. The farther away from the edge of an outline the CG is, the more stable the stand. In the picture, the top and bottom platforms are offset horizontally from each other, this will make fulfilling both conditions more difficult... As stated earlier, any curvature of the post does not matter. The top and bottom platforms might be kind of small, but I don't know how big the speakers are... -- JeffB remove no.spam. to email David F. Eisan wrote: Hello everyone, I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. Every Neighbourhood has one, in Mine I'm Him Hello everyone, I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. Every Neighbourhood has one, in Mine I'm Him |
#6
Posted to alt.binaries.pictures.woodworking
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Need Help with Physical and Aesthetic Centre of Gravity on Speaker Stands (w/pic)
The speaker is the same size as the top platform and only 1' high. The
bottom platform is 1" wider than the top. David. "JeffB" wrote in message ... The center of gravity of the speaker must fall within the outline of the top portion of the stand, so as not to fall off the stand. The center of gravity of the entire assembly - speaker plus stand - must fall within the outline of the bottom portion of the stand, so the stand does not topple over. The farther away from the edge of an outline the CG is, the more stable the stand. In the picture, the top and bottom platforms are offset horizontally from each other, this will make fulfilling both conditions more difficult... As stated earlier, any curvature of the post does not matter. The top and bottom platforms might be kind of small, but I don't know how big the speakers are... -- JeffB remove no.spam. to email David F. Eisan wrote: Hello everyone, I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. Every Neighbourhood has one, in Mine I'm Him Hello everyone, I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. Every Neighbourhood has one, in Mine I'm Him |
#7
Posted to alt.binaries.pictures.woodworking
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Need Help with Physical and Aesthetic Centre of Gravity on SpeakerStands (w/pic)
The top piece will need to be pretty much centered over the bottom
piece. Where the post connects to each piece is up to you. While the curvature doesn't affect the mounting points, it will shift the CG of the stand slightly in the direction of the curve. I would place the mounting points 2/3 to 3/4 of the way back on both top and bottom pieces, with the the post curving towards to front. Another thought - you mentioned that the speakers are 20 years old. Have you checked if they can be put where you intend without interfering with the TV screen? Speakers intended for placement near a CRT are magnetically shielded... -- JeffB remove no.spam. to email David F. Eisan wrote: The speaker is the same size as the top platform and only 1' high. The bottom platform is 1" wider than the top. David. "JeffB" wrote in message ... The center of gravity of the speaker must fall within the outline of the top portion of the stand, so as not to fall off the stand. The center of gravity of the entire assembly - speaker plus stand - must fall within the outline of the bottom portion of the stand, so the stand does not topple over. The farther away from the edge of an outline the CG is, the more stable the stand. In the picture, the top and bottom platforms are offset horizontally from each other, this will make fulfilling both conditions more difficult... As stated earlier, any curvature of the post does not matter. The top and bottom platforms might be kind of small, but I don't know how big the speakers are... -- JeffB remove no.spam. to email David F. Eisan wrote: Hello everyone, I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. |
#8
Posted to alt.binaries.pictures.woodworking
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Need Help with Physical and Aesthetic Centre of Gravity on Speaker Stands (w/pic)
I will not rehash what everyone else has said, but two things to also
consider, 1 to help with the uneven floor and the cat rubbing against it, try some spiked feet (link included) . 2. Also try to add some weight to the base, I am going to try and get some marble or granite for more. The center of Gravity for the speakers will not be in the center, it will in fact be slightly front, but in a small speaker like this it will be almost insignificant. I also used double stick tape to hold mine down to the stand. G "JeffB" wrote in message ... The top piece will need to be pretty much centered over the bottom piece. Where the post connects to each piece is up to you. While the curvature doesn't affect the mounting points, it will shift the CG of the stand slightly in the direction of the curve. I would place the mounting points 2/3 to 3/4 of the way back on both top and bottom pieces, with the the post curving towards to front. Another thought - you mentioned that the speakers are 20 years old. Have you checked if they can be put where you intend without interfering with the TV screen? Speakers intended for placement near a CRT are magnetically shielded... -- JeffB remove no.spam. to email David F. Eisan wrote: The speaker is the same size as the top platform and only 1' high. The bottom platform is 1" wider than the top. David. "JeffB" wrote in message ... The center of gravity of the speaker must fall within the outline of the top portion of the stand, so as not to fall off the stand. The center of gravity of the entire assembly - speaker plus stand - must fall within the outline of the bottom portion of the stand, so the stand does not topple over. The farther away from the edge of an outline the CG is, the more stable the stand. In the picture, the top and bottom platforms are offset horizontally from each other, this will make fulfilling both conditions more difficult... As stated earlier, any curvature of the post does not matter. The top and bottom platforms might be kind of small, but I don't know how big the speakers are... -- JeffB remove no.spam. to email David F. Eisan wrote: Hello everyone, I started on my first bit of woodworking not related to home renovations tonight for the first time in a real long time. I lost the shelves that my small bookshelf speakers rested on and I wanted something to hold them off the floor beside the TV. I almost got them done tonight but I got stuck with the physical and aesthetic center of gravity placement of the vertical post vs. the top and bottom platforms. The speakers are 20 year old Infinity RS1000's that I replaced the main drivers in two years ago due to surround cracking from age. I am at a loss at where the vertical post should meet the top and bottom platform so they look good and don't topple. Any ideas? Thanks, David. |
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