Feel free to do your own searching and learn about controlled directivity yourself.
I feel no need at all to prove anything too you.
And that difference is in the link you attached (I will read it already) or have you also forgotten to attach something ? 😀
But that is obvious! It is about sharing and clarifying to all of us who are reading this post, but if you do not want to do it, let the devil's lawyers act for you ......🙄
CD has to do with listening exactly the same on the axis or off it? 😕 seems too difficult, it's not my cup of tea anyway ...
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Note... Dead/hacked url removed by moderation." Upgrading now no longer means what it used to in the Magnepan line, where you climbed the model ladder every so many years getting a bigger and supposedly better model only to find your amp insufficient, your room insufficient, or yourself just unhappy at where the sound is now at after spending all this money, and maybe you're not even sure why. Well, the problem is Magnepan doesn't make them better, they just make them bigger. What's more our mods have revealed that the "small" (as if a 48 "tall speaker is small) and medium sized models have literally no performance ceiling where clarity and delicacy is concerned, and they can even do bass, as in you don ' t need a sub bass. It's simply a question of unlocking the performance contained in them."
Look at this! Marketing evolves!
It's good to know that you can accept the limitations of your product while promoting the improvements.
Brilliant argument.
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Demanding I explain it to you without you even bothering to have a look or try to understand it yourself, which you clearly don't, is going to get you what sort of response do you think?
See, clearly you do not understand.
You clearly don't understand the ironies, I'll give you a hint:
Disco compacto - Wikipedia, la enciclopedia libre
😀
Disco compacto - Wikipedia, la enciclopedia libre
😀
You ask this as a question, the answer is no. I have been hearing this more and more recently. I wonder where these ideas come from..
What ?
I have gone through the whole thread and there is no link provided by you, what am I not reading ?
I think you imagine that you do things ... but tell me where is what you attached
@ Academia: Martin Logan in their last DSP planar added not only bass, but a cardioid bass to have the same behavior of the planar, i.e. make the side walls disseaper. the driver firering towards the front wall is time delayed for that purpose by the distance of the wave length coming from the front. While big speaker radiate 4 Pi (360°) untill the long transition of the baffle step which is quite low with big boys speakers. I risk a shortcut : imho with the big boys of this thread, the sound below the baffle step (around 300 to 400 hz with them due the size ?) is the one of the room, or more exactly the loudspeaker room + the loudspeaker in these low frequency of the mid.
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Allen, It wasn't a question, thank you anyway for the "no".
I remember reading the entire "PI" article on the CD some years ago, I even uploaded it in the "featured" section, but now I can't find it anymore, have they deleted it?
Thanks for your input. The cardioid bass ..... you should see the irradiation lobe, but if you read my previous contribution you will see that I am not such a friend of the walls disappearing completely ...
🙂
No Academia, it is just a clarification as i've already been sent to do my homework by Earl when i made a shortcut implying both approach are more or less the same ( which is not as Earl's loudspeakers aren't meant to be corner loaded nor W.Parham use multisub approach).
I fully understand Earl Geddes or W. Parham don't want to be associated this way: both followed their own path leading to similarities on some points, difference on some other.
I don't want to spoil the fun to search for Earl's own approach ( Gedlee loudspeakers on google should bring results).
I hope it is clearer.
😉
B&W engineers favor one large 15" woofer over two 9" woofers... BUT B&W marketing knows that narrow speakers SELL because they are sexy and have great WAF.
B&W White Paper: “One remarkable fact was consistently noticed during the development of the new 380mm bass unit for the Nautilus™801, and that was that a single large and stiff bass cone always sounded better than a number of smaller cones, even though they may well have had the same aggregated properties. One possible explanation for this is the concept of the production of a “coherent wave front”. This will be produced by a single large very stiff cone, which can couple with the air in a uniform manner over the whole of its surface area unaffected by differences in loading over that area. This behavior is to be compared with that of several cones which, even though they may be closely spaced, will still leave gaps of “uncoupled air” between them. The very stiff cone material of the large single driver, which is a thick sandwich of Kevlar® reinforced paper fibers with a very stiff skin, makes it less responsive to local changes of acoustic impedance or unbalanced modal pressures either behind or in front of the cone.”
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Troels: "For bass I picked the 18N862-8 Ohm, 18" bass driver. Low Fs of 25 Hz from a PA driver and it handles 1500 watts! Very high quality driver made in Hannover, Germany. Give it a vented box of 200 litres and it will shake your guts! And just because it makes 95 dB, don't think it runs from faint hearted SET stuff. Give it a couple of hundred good solid state watts and it rocks."
B&W White Paper: “One remarkable fact was consistently noticed during the development of the new 380mm bass unit for the Nautilus™801, and that was that a single large and stiff bass cone always sounded better than a number of smaller cones, even though they may well have had the same aggregated properties. One possible explanation for this is the concept of the production of a “coherent wave front”. This will be produced by a single large very stiff cone, which can couple with the air in a uniform manner over the whole of its surface area unaffected by differences in loading over that area. This behavior is to be compared with that of several cones which, even though they may be closely spaced, will still leave gaps of “uncoupled air” between them. The very stiff cone material of the large single driver, which is a thick sandwich of Kevlar® reinforced paper fibers with a very stiff skin, makes it less responsive to local changes of acoustic impedance or unbalanced modal pressures either behind or in front of the cone.”
=====
Troels: "For bass I picked the 18N862-8 Ohm, 18" bass driver. Low Fs of 25 Hz from a PA driver and it handles 1500 watts! Very high quality driver made in Hannover, Germany. Give it a vented box of 200 litres and it will shake your guts! And just because it makes 95 dB, don't think it runs from faint hearted SET stuff. Give it a couple of hundred good solid state watts and it rocks."
Of couse ! It is clear to me that there are always different criteria, even among the trained people you quote.
I'll tell you that when I saw your answer .......
Hey, I like electrostatics! They are unsurpassed in many ways !
Yes it's true, electrostatics are unsurpassed in many ways.
But... i'm addicted to 'big' drivers and high efficiency.
I liked a lot the JBL i've heard and was surprised to read TG comments about The Loudspeaker: it is close to what i like in this big box. I'm sure they sound pretty good.
As most of the time a question of preference.
But... i'm addicted to 'big' drivers and high efficiency.
I liked a lot the JBL i've heard and was surprised to read TG comments about The Loudspeaker: it is close to what i like in this big box. I'm sure they sound pretty good.
As most of the time a question of preference.
Sorry, that sentence was directed at LineSource, because his avatar is an electrostatic ....
But i agree, I like big speakers and high efficiency, but with tubes !
I think a last generation Martin Logan (with the addition of that special "lobed" speaker, must be a great speaker.
But i agree, I like big speakers and high efficiency, but with tubes !
I think a last generation Martin Logan (with the addition of that special "lobed" speaker, must be a great speaker.
That must be a great speaker, although surely a very high cost ...
I had an email exchange with Eminence these days because I wanted to find out about the VC of Delta Pro 18 A, they confirmed that they are 4 layers, which is neither good nor bad, they tell me, although I think of the enormous space of the gap and I think it is to compensate when there is little magnet and "impact" is sought, at the expense of definition ...
What will the VC of that speaker praised by Troels be like? Manufacturers do not always give all the data ...
Hah!
My wife sat down and nearly cried when I got my stack of 6x15" speakers inside the door a couple years back, now she seems proud of them and even posted about the speakers favourably on facebook. She told her colleagues about me being into diy audio thing, and most where actually positive about it since I'm actually doing stuff and not just yelling at the tv.
I think that big speakers (not that big compared to some, biggest are about 300 liters each, "big enough" for me) and relationships can work out well, my daughters like big-ish speakers, and my wife feels like she can freely comment on sound quality.
It is possible, the dream can be made reality. It's all in the approach.
Like the logo says:
diyAudio
projects by fanatics, for fanatics