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Post by 405x5 on Apr 3, 2024 13:20:00 GMT -5
www.passdiy.com/pdf/el-pipe-o.pdfFrom Nelson Pass. HIS entry is for tall rooms and doesn't require huge floor space. Tube makes 'building an enclosure' a snap......He did a 2x18" version and later went to a single sub PER tower..... …… Oh yeah The man who inspired me with his Velodyne FSR 18 Let his go and went down this road with the cylinders flanking either side of his system…… He appeared to be in Sono tube heaven |
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Post by marcl on Apr 3, 2024 14:26:43 GMT -5
Subwoofer? ..... FOUND!!!  |
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Post by leonski on Apr 3, 2024 17:20:52 GMT -5
I had an alternative idea. My ceiling is about 11 feet at the absolute peak. No room for 10' tall tubular subs.
However? If I could mount the sub HORIZONTIALLY on the wall, maybe 6 feet UP?
It should ALSO be possible to do a tube-within-a-tube of about 1/2 the calculated length......I COULD fit in 6 footers standing up......
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Post by 405x5 on Apr 3, 2024 18:09:07 GMT -5
One of Howard’s custom subwoofer tubes built a few years back  |
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Post by leonski on Apr 3, 2024 19:06:55 GMT -5
Who is Howard?
Howard the Duck? Howard Hessman? Howie Mandel? Howard Hughes? Howard Stern?
Looks nice. You can use PVC or SONOTUBE as you see fit.....or maybe a combination?
Maybe finish with either paint or some kind of vinyl.
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Post by 405x5 on Apr 4, 2024 7:34:27 GMT -5
Who is Howard? Howard the Duck? Howard Hessman? Howie Mandel? Howard Hughes? Howard Stern? Looks nice. You can use PVC or SONOTUBE as you see fit.....or maybe a combination? Maybe finish with either paint or some kind of vinyl. ……Highly skilled woodworker and audio enthusiast. Both systems pictured were fabricated in his home shop. |
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Post by PaulBe on Apr 4, 2024 8:58:43 GMT -5
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Post by 405x5 on Apr 4, 2024 9:02:06 GMT -5
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Post by PaulBe on Apr 4, 2024 9:21:36 GMT -5
www.passdiy.com/pdf/el-pipe-o.pdfFrom Nelson Pass. HIS entry is for tall rooms and doesn't require huge floor space. Tube makes 'building an enclosure' a snap......He did a 2x18" version and later went to a single sub PER tower..... Tubular TL Subwoofer www.t-linespeakers.org/projects/nick/index.htmlThe woofer can be connected to the tube or the base. If connected to the base, the tube can be set loosely on the base. The link above describes the way to vary the length of the tube by altering the stuffing density using John Cockroft's equations. The John Cockroft style T-Line Subs I built 35 years ago were 24" Hartley drivers mounted in a heavy base with attached rollers to allow easy adjustment - A large 300# subwoofer is difficult to move and adjust. The 30" x 6' Sonotube sat into a groove on the base. I don't have any pictures from 35 years ago. |
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Post by PaulBe on Apr 4, 2024 9:30:42 GMT -5
The room is more of an integral part of subwoofer design than any other part of the speaker system. Some practical physical solutions that help limit needed room correction to low frequencies: trikustik.at/en/trikustik.at/en/product-search/ |
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Post by leonski on Apr 4, 2024 19:06:41 GMT -5
I was with several friends at anothers house and we experimented with using US as bass modifiers. Go stand in the corner.....get 2 or 3 others to do the same and the bass in the room changes.....audibly.....
If it was a little 'bloated' it may now be tolerable. Good experiment pointing the way to (or not) corner traps.......
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Post by PaulBe on Apr 4, 2024 19:31:52 GMT -5
I was with several friends at anothers house and we experimented with using US as bass modifiers. Go stand in the corner.....get 2 or 3 others to do the same and the bass in the room changes.....audibly..... If it was a little 'bloated' it may now be tolerable. Good experiment pointing the way to (or not) corner traps....... The best corners are transparent... No corners. However, perhaps the corners is a good place to seat some guests at a listening session. |
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Post by leonski on Apr 4, 2024 20:44:24 GMT -5
Bass would appear to 'accumulate' in corners.....The stand in a corner test is something anyone can do........just bribe some folks (taller / bulkier the better)
to come over and 'stand around'......
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Post by PaulBe on Apr 4, 2024 22:19:27 GMT -5
Bass would appear to 'accumulate' in corners.....The stand in a corner test is something anyone can do........just bribe some folks (taller / bulkier the better) to come over and 'stand around'...... Do you consider putting Crash Dummies in the corners to be a real solution? Your experiment with putting tall fat people in the corners to fix bass humps could be considered 'fat shamming' in our modern world. JK On a real 'note', everything affects everything. The trick is to integrate the whole into a real space rather than dissect the parts. |
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Post by leonski on Apr 4, 2024 22:39:46 GMT -5
Not a solution a TEST. Than you can get on with real solution using some kind of DIY bass panels for corners......I have a few designs which work well..... IF it turns out that bass corner loading is an issue.
It is difficult to fix 'everything all at once'. leaning what knobs to turn helps a lot with big Picture fix.....
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Post by PaulBe on Apr 4, 2024 22:50:34 GMT -5
Not a solution a TEST. Than you can get on with real solution using some kind of DIY bass panels for corners......I have a few designs which work well..... IF it turns out that bass corner loading is an issue. It is difficult to fix 'everything all at once'. leaning what knobs to turn helps a lot with big Picture fix..... I look forward to your 'real solutions'. Knowing what 'knobs' to turn does help to see the 'big Picture'. |
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Post by leonski on Apr 5, 2024 1:34:29 GMT -5
I'm no 'audio genius' but am willing to test. My hearing is find, but not exactly 'trained' but it does ALL come out in the wash..... Just an example? When I set up my panels, the new ones after 20+years with MG1s......I ran a series of tests. Conventional wisdom said to do a certain setup. so I did everything I could to arrive at what sounded best in my mediocre space. Tweeters IN or OUT. (panels are asymmetric) and pole piece To or From listener. That is 4 logical orientations. Keep in mind that my original panels had the pole piece TO the listener and the mylar facing the wall nearest. Somewhen, Magnepan decided the opposite was correct. I tested this. AT some point it got down to 'detail' of exactness...... Some setups lasted 1 minute or less. Something would disqualify and I'd move on. Better setups lasted an hour or a day or a couple days. The experiment continued. I CONVERGED on the best setup and finally took detailed measurements of panel edges to walls and offsets. I can put speakers back to +-1/8" of my 'best'..... My solution is a system not a decree or a 'you must'. My real solution works in my room and I've gone thru dozens of setups. The sub was another can of worms, but that worked out easily with a simple move of about 12 feet or so......Bass is now ample, not obviously 'peaky' or rumbly while my den is now listenable and no longer a helmholtz one-note torture session. I analogize to setting up a TV where you have all sorts of controls from color to contrast to brightness and if you dig into the menus, even MORE with 'detail' maybe and certainly all sorts of other adjustments some of which make the image look 'cartoonish'...... That has a slightly different but STILL a one thing at a time setup. Even using a setup disk, like the Spears and Munsil series will 'step' you thru. Done with good eyes and calm, you can get probably 90% of the way to an ISF (Imaging Science Foundation) setup. I can't imaginge the ISF person charging a penny less than 500$ these days..... spearsandmunsil.com/products/ |
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Post by PaulBe on Apr 5, 2024 7:51:55 GMT -5
I'm no 'audio genius' but am willing to test. My hearing is find, but not exactly 'trained' but it does ALL come out in the wash..... Just an example? When I set up my panels, the new ones after 20+years with MG1s......I ran a series of tests. Conventional wisdom said to do a certain setup. so I did everything I could to arrive at what sounded best in my mediocre space. Tweeters IN or OUT. (panels are asymmetric) and pole piece To or From listener. That is 4 logical orientations. Keep in mind that my original panels had the pole piece TO the listener and the mylar facing the wall nearest. Somewhen, Magnepan decided the opposite was correct. I tested this. AT some point it got down to 'detail' of exactness...... Some setups lasted 1 minute or less. Something would disqualify and I'd move on. Better setups lasted an hour or a day or a couple days. The experiment continued. I CONVERGED on the best setup and finally took detailed measurements of panel edges to walls and offsets. I can put speakers back to +-1/8" of my 'best'..... My solution is a system not a decree or a 'you must'. My real solution works in my room and I've gone thru dozens of setups. The sub was another can of worms, but that worked out easily with a simple move of about 12 feet or so......Bass is now ample, not obviously 'peaky' or rumbly while my den is now listenable and no longer a helmholtz one-note torture session. I analogize to setting up a TV where you have all sorts of controls from color to contrast to brightness and if you dig into the menus, even MORE with 'detail' maybe and certainly all sorts of other adjustments some of which make the image look 'cartoonish'...... That has a slightly different but STILL a one thing at a time setup. Even using a setup disk, like the Spears and Munsil series will 'step' you thru. Done with good eyes and calm, you can get probably 90% of the way to an ISF (Imaging Science Foundation) setup. I can't imaginge the ISF person charging a penny less than 500$ these days..... spearsandmunsil.com/products/I get it. Experimenting is fun, and a great teacher. I had Maggies. Moved them around a lot. Very enjoyable speaker when the right spot is found. I never listened to mine on edge. I did hear a 'just for dealers' Magnepan AV demo at a Chicago CES many many moons ago. They used 2 pair of MG3's up front in a V pattern, on each side. One inside pair aimed at MLP. An outside pair aimed at the walls - on edge to MLP. It was the first AV demo I heard and saw to show what could be done with HT. It was a primitive forecast of the AV future. Impressive experiment in 2 channel audio for video. AV source was a LaserDisc of Top Gun played back on a large CRT TV. 1987 IIRC. My Maggies were easier to move than my Subs.  |
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Post by 405x5 on Apr 5, 2024 8:37:43 GMT -5
My subwoofering effort was an exhaustive process…
I ordered it from the store. When it came in, I went and picked it up. When I got home, I unboxed it and stuck it in the corner. After I stuck it in the corner, I plugged it in. I turned it on, I put the empty box in the basement and that was the end of that. that was 23 years ago.
Clearly, there is something wrong with me.
…… Come to think of it if memory serves, I plugged it in BEFORE I stuck it in the corner.
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Post by PaulBe on Apr 5, 2024 9:34:31 GMT -5
... I put the empty box in the basement and that was the end of that. that was 23 years ago. Clearly, there is something wrong with me... What? You still have the box after 23 years? |
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