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Post by Boomzilla on Jun 25, 2017 10:35:49 GMT -5
And before you laugh - NO, I'm not proposing to put a turntable there. But...
If I put my sub between my speakers and move my audio rack off to the side, I still need for some gear to be near the center of the wall for wire-length reasons. What do I want in the center?
The TV's HDMI umbilical cord MUST be in the center (below the TV) because it's the "hub" for all the TV's HDMI inputs, and it isn't long enough to move (NOR is there any "extension cord" for the proprietary Samsung connector).
The Cox Cable Box MUST be in the center (and available to direct-line-of-sight from the remote) because my coax installation won't reach to anywhere else without unions and more wire AND because my wife won't like having to point the remote toward a corner to change the channel (an odd but true consideration).
Both those items require AC power, so I'm back to using a power conditioner in the center as well.
So long as I've gone this far, I might as well put the Ethernet switch and the Airport Express in the center as well, two more "need AC power" items.
The actual amps, preamps, disc players, etc. can reside on a side shelf.
Now to get the "center" gear in the center - they need to sit atop the subwoofer. Sad but true. I'd not expect for the sub's vibrations to damage this gear, but I thought I'd ask.
I can put a Sanus shelf on top of the sub. Acceptable or no?
Thanks - Boom
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Post by musicfan on Jun 25, 2017 11:01:36 GMT -5
With dual opposed design you can put anything you want on top. It won't budge
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DYohn
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Post by DYohn on Jun 25, 2017 11:08:18 GMT -5
If your subwoofer vibrates enough to affect equipment then it is poorly constructed. The enclosure of a subwoofer should be inert.
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DYohn
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Post by DYohn on Jun 25, 2017 11:09:12 GMT -5
And by the way, locating a subwoofer exactly between stereo speakers is not the best location. "Cheat" to one side or the other. Trust me.
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Post by novisnick on Jun 25, 2017 11:15:33 GMT -5
Ive use one of my subs as a side table for over a year and everything on is stable. I agree with DYohn about the sub build, should be inert! But I haven't felt the force of the Dark Side of your sub! 😂 |
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Post by Gary Cook on Jun 25, 2017 16:03:38 GMT -5
Put a glass of water on top of the sub and at normal listening volume see if there are any ripples, if there are then find a another solution. If none , then go for it.
It took about 2 days for my wife to get used to pointing the remote sideways, no big deal.
Cheers
Gary
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Post by Boomzilla on Jun 25, 2017 16:34:47 GMT -5
Your wife is "trainable..."
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Post by Percussionista on Jun 25, 2017 16:41:28 GMT -5
Ive use one of my subs as a side table for over a year and everything on is stable. I agree with DYohn about the sub build, should be inert! But I haven't felt the force of the Dark Side of your sub! 😂 If you do get some bass ripples on the top of the sub, would it be possible to place an acoustic isolation pad on top of it, then the components? I don't know any that are more like a flat hunk of (attractively colored) foam or similar but maybe denser less squishy material, but something like that might dampen the extra wiggles. Most of these acoustic pads and solutions are meant for going under the sub, but they should also work between components I would think. |
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Post by Boomzilla on Jun 25, 2017 16:51:43 GMT -5
I am virtually certain that I WOULD get ripples in a water glass on top of the sub. But it would NOT be from cabinet vibration - it would be air-transmitted. I can shake things off shelves two rooms away with this sub so AIR IS MOVING. But putting my hands on the thing, I feel no vibration in the cabinet itself.
Besides - the only thing atop the sub will be the cable box (that I lease from the cable company for some outrageous rate). So if it breaks, I have them deliver me another to put on my "coffee table."
No problemo...
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Post by Gary Cook on Jun 25, 2017 16:59:22 GMT -5
Your wife is "trainable..." More like "adaptable", after all she has gotten used to me over the years.  Cheers Gary |
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Post by novisnick on Jun 25, 2017 17:02:54 GMT -5
I would try the rubber type lining I use for under my turntable. The TT is in close proximity to two 8" subs and one of my towers and feels no noticeable effect at all.
The rubber lining is the type used in a toolbox and more recently in kitchen cabinets.
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Post by vneal on Jun 25, 2017 17:21:16 GMT -5
Discussing putting equipment on top of a sub and your a reviewer? WTF ?
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Post by Gary Cook on Jun 25, 2017 18:17:31 GMT -5
I am virtually certain that I WOULD get ripples in a water glass on top of the sub. But it would NOT be from cabinet vibration - it would be air-transmitted. I can shake things off shelves two rooms away with this sub so AIR IS MOVING. But putting my hands on the thing, I feel no vibration in the cabinet itself. Besides - the only thing atop the sub will be the cable box (that I lease from the cable company for some outrageous rate). So if it breaks, I have them deliver me another to put on my "coffee table." No problemo... Comparison, try the glass of water in the possible locations. It's an "old world" test that I was shown a long time ago by a notable acoustics engineer, when I complained that I did't have access to his suite of test equipment. Cheers Gary |
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Post by petew on Jun 25, 2017 19:17:29 GMT -5
Jay Leno did the "glass of wine" test on his Chrysler Turbine powered sedan. Nary a ripple. youtu.be/b2A5ijU3Ivs |
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Post by Boomzilla on Jun 25, 2017 20:13:05 GMT -5
Discussing putting equipment on top of a sub and your a reviewer? WTF ? Sorry, reviewers don't know everything. In fact, we're not (for the most part) even in the audio business. The only thing that makes us "reviewers" is that we're willing to work for next to squat and we can (mostly) produce grammatically correct text in a short period of time (and on demand). I do know that vibration-sensitive equipment should never be placed in close proximity to speakers or (especially) subwoofers. But for the most part, equipment that has no moving parts doesn't much care. Now there could be some EMF interference from the speakers/subwoofers magnets, but today most equipment (including the speakers themselves) are shielded from such magnetic interference by design. This is one of the byproducts of the HT revolution where manufacturers anticipated that many setups would (by necessity) involve close proximity between electronics and speakers. So reviewers are not experts (with some few exceptions). I have a life outside of audio, and like everyone else, I have some things I'm good at - others I'm not. I don't mind asking if I have a question, and I often learn things when I listen to the answers. Cheers - Boom |
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Post by novisnick on Jun 25, 2017 20:18:27 GMT -5
Life is a continuous lesson, if and when we pay attention!!
Years ago I realized Ill never learn everything I would like to know in this lifetime! Mortality has its limitations! Enjoy the education!
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Post by brutiarti on Jun 29, 2017 10:22:47 GMT -5
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Post by vneal on Jun 29, 2017 10:27:32 GMT -5
I use GIK panels and they help. Especially on the sides at first reflection points.
As to equipment on top of any subwoofer regardless of the brand-JUST DON'T DO IT
I actually cannot believe it is being discussed
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stiehl11
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Post by stiehl11 on Jun 29, 2017 11:12:38 GMT -5
I agree, just don't do it. If you don't have room for the sub you bought in your listening space then send it back. If you really want the sub then get a bigger listening space. I've been wanting a second sub for ages but I'm not going to set it on the sofa with me, no matter how inert it is. Likewise, I wont use it as an end table, a TV tray, an equipment rack, a chair, or a perch for my parrot.
My suggestion would be to get a rack for your must-have-center equipment and set the sub in front of the equipment rack.
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Post by monkumonku on Jun 29, 2017 11:34:08 GMT -5
My sub is located in the rear corner of the room because that's the best measured location for it that is available. I put one of the rear surround speakers on top of it, cushioned by some Auralex Mopads. The sub seems pretty inert and has some vibration absorbers between it and the carpet. I would think for passages with loud, impacting bass, that the room would vibrate just as much as the sub does, maybe even more. The sub works fine as a sub and as and end table and stand for one of the surrounds.
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