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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: RE: "within inches of the main speaker" - I think you are overstating it posted by genungo on December 4, 2014 at 05:29:29:
I wasn't trying to draw a picture of my room. Like I said in the previous post, it's just a notional illustration of the two different placements. The real room is more complicated, not strictly rectangular or symmetric. Anyway, the experiments I was doing reflect the fact that I'm an engineer and enjoy that stuff more than they reflect any extraordinary room specific issues.
My current setup in that room uses conventional subs with a more conventional 70 Hz LPF setting and no digital XO, but that's mainly because I really like the sound of my current Linn->Ayre->WB combo and it doesn't allow for anything fancier.
Also, the specific placement tradeoffs I was investigating are not unique to my room, they exist in every listening room. No matter what speakers you use or what room you use them in, there will be quarter wavelength nulls which depend on distances from the drivers to the front wall, side wall, floor, and ceiling. In a small-medium sized room, a very typical audiophile speaker setup has the speakers located 2-3 feet from the side walls and 3-4 feet from the front wall (or possibly vice-versa for long wall placement). With this sort of placement, there are always going to be nulls in the bass and lower midrange, and the null due to the front wall reflection is going to be somewhere right in the middle of the bass. If you place subs right next to the speakers, their response will also have the same null.
These nulls don't depend on the squareness of the room, only the proximity of the speakers to room boundaries. A square room presents a problem with overlapping room modes though.
The whole point I was making is that it's not necessary and usually not recommended to place subwoofers right next to the speakers, because the best location for optimizing the mid & high frequency response and soundstaging is rarely the best location for optimizing the bass. This is true even with a high crossover. And there have been several high quality commercial loudspeaker systems designed to have separate independent bass modules with a crossover of 100 Hz or even higher, including Lyngdorf, NHT, Audio Kinesis, and GedLee. It is a perfectly valid approach.
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Follow Ups
- Not really, drawing isn't to scale - Dave_K 16:31:59 12/04/14 (5)
- RE: 100 hz or higher - genungo 02:29:16 12/05/14 (4)
- RE: 100 hz or higher - Dave_K 07:52:23 12/05/14 (3)
- RE: 100 hz or higher - genungo 09:46:05 12/05/14 (2)
- Headphones have the cleanest bass response - Dave_K 05:41:00 12/07/14 (1)
- Some say that headphone bass is a bit too "clean"... - genungo 06:20:47 12/07/14 (0)
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