Hi,
I was asking if anyone had experience in using an H-baffled - or similar subwoofer in nearfield application?
I would like to add some bass to my current monitors (Genelec 8020) and I would buy the matching 7050B sub instantly, but I know it won't respond well to my less-than-ideal room acoustics..
Hence I got an idea of making a H-baffled 12" dipole sub. I was thinking of crossing it over at 150hz or 200hz with DSP.
I would place it on my desk, thus distance from the sub to listener would be 1 meter or less!
Please give your opinions of such setup. Worth trying or not. I'm only expecting output to 40hz, and have no need for high SPL's.
I was asking if anyone had experience in using an H-baffled - or similar subwoofer in nearfield application?
I would like to add some bass to my current monitors (Genelec 8020) and I would buy the matching 7050B sub instantly, but I know it won't respond well to my less-than-ideal room acoustics..
Hence I got an idea of making a H-baffled 12" dipole sub. I was thinking of crossing it over at 150hz or 200hz with DSP.
I would place it on my desk, thus distance from the sub to listener would be 1 meter or less!
Please give your opinions of such setup. Worth trying or not. I'm only expecting output to 40hz, and have no need for high SPL's.
See Dipole on axis
Basically in the near filed you are justlistening to the front or rear source when on axis. If you are at 90 egress off axis you won't have any basss. For near filed it's hard to be a monopole woofer.
Basically in the near filed you are justlistening to the front or rear source when on axis. If you are at 90 egress off axis you won't have any basss. For near filed it's hard to be a monopole woofer.
It is hard to be a monopole woofer, I agree
You know I subconsciously seem to "edit-out" typos.. I read it as "hard to beat", then I read your post and did a double-take.
A single sub that close or not doesn't really matter a lot.
Now *two* dipole subs in stereo (L & R) that close, depending on their placement/proximity relative to you can make a difference.
One of the nice things here is that no matter the design, you'll get a "boost" in sp at lower freq.s when less than 3 feet.
If it's not a stereo sub (ie. single sub with summed input), then I'd suggest a location immediately behind your seated position with a proper phase adjustment. It can be any sort of design you want. However a dipole sub like this can lead to lower pressure leakage into adjoining rooms, making it a "quieter" solution.
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1m might be too far away, the room will probably already show its ugly face. It's better to place the sub as close as possible behind the head.
Please see Comparison of different near field and far field subwoofer configurations
You know I subconsciously seem to "edit-out" typos.. I read it as "hard to beat", then I read your post and did a double-take.
Haha! yeah, I edit out them as well, but john's post had a plethora of typos!
Maybe a little mouse ran across his keyboard
Haha! yeah, I edit out them as well, but john's post had a plethora of typos!
Maybe a little mouse ran across his keyboard
Ah, now I "see" what I'm doing.. I seem to "hit" the first typo, and then subconsciously auto correct after that. You're right - veritable "mine-field" of typos in that post.
I could actually envision a rather nice end-table like this from a horizontal "stack" of connected ripoles. (..maybe with a floating glass top.)
I could actually envision a rather nice end-table like this from a horizontal "stack" of connected ripoles. (..maybe with a floating glass top.)
This is a great idea!
I could actually envision a rather nice end-table like this from a horizontal "stack" of connected ripoles. (..maybe with a floating glass top.)
I was thinking of a bandpass sub that is very wide but not very deep, with the opening running across the width of the couch.
That would also be good, but I don't think it would have quite the visual interest of the stacked ripole. (..I've done this with several designs before, but never a ripole. The one I liked best, personally, was the T-line.)
..sort of like the difference between a watch and a skeleton watch, where with the skeleton watch you can see the mechanical structure of the watch.
The only other thing is that ripole will be easier on the neighbors or household.
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Not to hijack this thread, but I have been thinking about a dipole subwoofer for my family room with a pair of 15 or 18 drivers in what I believe is called a "V" frame(LX521).
Does such a system even work for a family room or do you have to be sitting really close?
My wife does not care for how much rattle the current sub produces and from what I understand the dipole sub approach does not create as much.
The listening is all done on a single couch that the sub can be "aimed" at.
Does such a system even work for a family room or do you have to be sitting really close?
My wife does not care for how much rattle the current sub produces and from what I understand the dipole sub approach does not create as much.
The listening is all done on a single couch that the sub can be "aimed" at.
It works for the LX521 - it should work for you.
(..sitting really close usually references a lower freq. response that actually behaves more like stereo for a single listener with directive designs like dipoles. It also helps with dynamics and power requirements.)Note that it may work really well for only one position on the couch however, but something like Room EQ Wizard can help with an average of locations on the couch.
For linearity with respect to listener position Geddes's multi-monopole sub setup is better option, but it's not going to net you the favorable advantage that you are specifically asking for here.
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