Happy man, happy family. Happiness is for everyone, even men that prefer small speakers, and do not have a pair. And of course these days a woman often brings her own pair into the house.Anton, good for you.
the size of speakers dont define your manhood.
the happyness of his famliy should.
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What? Why?do you really have a wife
Nice examples! I have been thinking about the diffraction issue (done some FEM simulations as well, should I post those?), that's why I'm into the sphere geometry. But as you say, the back wall kinda messes it all up. The absorber should help, right?Form Follows Function
Function: Low cabinet diffraction.
Form: Sphere+rear tapered tube.
(white papers at B&W Nautilus)
To gain full advantage of the sphere's minimal diffraction requires an almost free standing sphere. Lose some value when near rear wall.
Function: Time and phase perfect sound:
Form1: Physical time alignment of speakers, plus select analog Xovers.
Form2: Digital time alignment of speakers, select digital FIR filters.
"If you only have a hammer, then every problem looks like a nail."
Waveguides are today's audio hammer.
For the time and phase part: The plan is to get a reciever with decent calibration possiblities (Audyssey, YPAO) and an miniDSP for the subwoofers. I'm looking at the Geddes approach, should work well in my case (large subs in front and possibility to add smaller subs back).
That's the plan, I just need some good examples to show her first I asked (without examples) and didn't get any direct answer. She has specifically said that she does not like rectangular floor standers (like Dali Ikon 6, Canton GLE 490...).Have you asked your beloved wife what she wants?
This was my thought too initially, the design should not be too complicated/stand out. Here I took the on-wall design that some people seem to like (me too) and simplified it in three steps:According to my 'theory' the beloved wife won't like any of the designs so far ... too complicated.
If women are as complicated as that panel suggests and opposites attract, what she really wants
is something simple. Just a beautifully proportioned and crafted box to suit the room dimensions, (preferably able to support a vase) from which as if by magic soothing music fills the room. Then again she maybe into heavy metal?
Better? In the last two I could get a lot of volume for a subwoofer - just skip the oak pieces and connect the volumes. That way I loose the possibility of having absorber though...
Here is another version of the speaker from a few posts ago:
/Anton
Noticed I didn't answer this post.You can alter the external box shape and the number, length and shape of the spirals.
The whole idea behind the Cornu is the cabinet augments the bass of a small driver so to add a woofer defeats the purpose IMO. If you are set on the separate woofer then you can still do a flat box idea but I wouldn't bother with the spiral. You can get more juice out of the system by high passing the other drivers. The Cornu I did has edging similar to a picture frame so that you could add an acoustically transparent overlay like a silkscreen or...
Alright, there isn't any other benefits of the four spirals? I was thinking that they produced a more omni-directional sound field than a simple closed speaker with the same front geometry.
/Anton
do you really have a wife
What? Why?
I was just curious because of the designs you are suggesting
I suppose you expect your wife would approve them
this one might have realistic possibilities
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OhI was just curious because of the designs you are suggesting
I suppose you expect your wife would approve them
I'm guessing that if I show her one of the more discrete suggestions she would compare it to the ones we own and think that the suggestion is not so discrete. But if I show her some crazy designs first it might make her open her mind a little
/Anton
I'll have to find a way around that. As there is no way of getting more than one foot of distance in our living room. There are a lot of on-wall speakers, are you saying that none of them will produce something that can be considered hi-fi?no treatment will change the fact that your speaker are on the wall. I have experienced immense difference by having the speaker around 3 feet minimum from the backwall. I beleive that it is, for hi fi, quasi obligatory.
/Anton
the distance of your speakers from the backwall is critical for many things, like soundstage, bass perfromance, ect.I'll have to find a way around that. As there is no way of getting more than one foot of distance in our living room. There are a lot of on-wall speakers, are you saying that none of them will produce something that can be considered hi-fi?
/Anton
Its all well known facts and documented, look around. I used to not care much about speaker placement, but after experiencing with this, I was shocked how much difference it makes to have your speaker to optimal placement. The optimal speaker palcement is 5 feet from the back wall, if you go under 3 feet, I have personnally noticed huge difference in bass performance and soundstage and imaging performance.
If you are stuck with "on the wall" this would be my vote too... FWIW.You can alter the external box shape and the number, length and shape of the spirals.
The whole idea behind the Cornu is the cabinet augments the bass of a small driver so to add a woofer defeats the purpose IMO. If you are set on the separate woofer then you can still do a flat box idea but I wouldn't bother with the spiral. You can get more juice out of the system by high passing the other drivers. The Cornu I did has edging similar to a picture frame so that you could add an acoustically transparent overlay like a silkscreen or...
I measured the thickness of the wall yesterday, it is about 9 cm in total. I'm guessing that it means 70 mm wood/void and 2x12 mm plasterboard. What woofers are thin enough (maximum depth of 80 mm)?built inwall speakers
and cover with textile grills.
WAF pics may be printed on textile. and WAF frame around..
I still have this as an option, but my wife is usually hesitant making holes in the walls.
/Anton
the distance of your speakers from the backwall is critical for many things, like soundstage, bass perfromance, ect.
.... The optimal speaker palcement is 5 feet from the back wall, if you go under 3 feet, I have personnally noticed huge difference in bass performance and soundstage and imaging performance.
I agree with this but most of us cannot have speakers however small or large 1-2 meters away from the rear wall. Sensing this, some 30 years ago Polk realised this and in fact designed speakers with a bass response that allowed them to be close (less than 6") to the rear wall. I believe they were called the SDA series.
As DIYers we have the ability to tailor at least the frequency response of the speakers we build to accommodate the location and room they (the speakers) are living in.
That said bringing the speakers out into the room does help imaging depth as well. For this there is no real solution (if the speakers are flat against the rear wall).
Onni,
I would suggest that you first make a short list of designs that YOU like and will suit your audio needs and then let your wife choose from this short list. This was she will have some say in what you are building and also you will get something acceptable.
One more option we DIyers have is the ability to choose a veneer (or finish) that matches the décor. When I built speakers for the living and dining room I used the SAME veneer used in that room. This helps the speaker blend in a bit and look like it was designed for the room.
The optimal speaker palcement is 5 feet from the back wall, if you go under 3 feet ...
3 feet is ok if you measure fro speaker front
5 feet from speaker side to side wall would be equally great
but even that is no guarantee
try to place less good speaker that way, and it might sound like hell
most efforts to achieve perfect sound fails, one way or the other
book shelf and wall mounted speakers may not correlate well with highest audiophile demands
but you can still achive 'good sound'
it may actually be easier
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