Tecnología, Audio, Video y Home Cinema
heracles escribió:Y por cierto, no se que es peor si tener una bandera de avatar o la fotito de un sarasa como tienen otros
heracles escribió:El mismo respeto que tienen los NAZIonalistas con las personas que viven en la región catalana y no comparten ni su punto de vista ni sus opiniones.
Han conseguido crear un sistema de gestapo nazionalista para tener controlado quien es o no afecto "al régimen", han creado un control de medios que ya quisiera para si el propio Goebbels, se censura a los artistas catalanes que no comulgan con "la búsqueda del paraíso celestial nazionalista" ........ pero claro, no se les puede llamar nazis.
Eso es como cuando Garaicoechea se refería a los asesinos de ETA como "los chicos".
Mucho eufefismo, pero son los mismos perros con distintos collares.
Así que ........ si, nazis hasta la medula, aunque no se quiera reconocer.
heracles escribió:Ahora empiezo a entender muchas cosas.
Así que como algunos han publicado en revistas he incluso han sido presidentes de AES, se sienten como dioses del Olimpo, despreciando a los pobres mortales porque estos osan llevarles la contraria en sus sacrosantos preceptos.
Me parece que lo que hay es mucho ego acomplejado, sobre todo si algunos añoran tiempos mejores en los que todavía eran alguien.
) durante años... pues tras ello se les bajaría todo el ego de sopetón (a algunos incluso la venta de milagros). 
) hay una EVIDENTE GANANCIA medida... y es lo sabe cualquiera que haya medido alguna vez un sub o una caja. Otro tema muy diferente es que en ciertos casos no se obtenga ganancia.
Room gain is a room thing related to acoustic size, unrelated to what kind of woofer is or alignment is used.
What happens is that if you think of free space, you can easily picture the sound radiates away from the source. When you put a speaker in a room, the sound also radiates BUT when the frequency is low enough so that the longest acoustic dimension is about a half wavelength or less, then the room acts to confine the pressure instead of it bouncing around and being absorbed.
In an absolutely solid concrete bunker, once your well below the lowest room mode, room pressure is proportional to driver displacement.
From the speaker point of view, this provides 12dB per octave gain as the frequency falls. In a perfect world like this, that slope EXACTLY compensates for a sealed box's roll off which also reaches 12 dB/oct.
That reciprocal set of slopes fix or EQ each other and the response extends flat to DC.
One of the extraordinarily few cases of a nearly free lunch.
In a real room, not a 3 foot think concrete walled airtight bunker, the slope is always less than 12 dB per octave due to flexing and leakage.
Rooms I have measured (and this would be from a number of averages) tended to be in the 3 to 9dB per octave range, open plan houses having the least room gain.
System types;
Sealed box speakers have an asymptotic roll off that is 12 dB per octave although in the region of the knee, it can easily be less if it is a low Q alignment.
Vented boxes, passive radiator alignments have an asymptotic roll off of 24 dB per octave, basically, the higher the order of the alignment, the steeper the roll off is.
Tapped horns tend to be an in between alignment, typically in the 15 to 24 dB per octave range depending on the horn size relative to wavelength.
You can hear room gain yourself in your car where the room gain corner F is usually around 50 - 60 Hz. Here, a small sealed box with a 50Hz corner will deliver deep bass in the car when the windows are up.
Hope this helps.
Tom Danley
In Earl Geddes' brief study of multisub systems published on his website, we can readily see the effects of room gain. This study probably assumes a more effectively-sealed room than most of us have, so the room gain here may be more than we can normally expect, but I think it's wortwhile to see how it plays out in the modelled response
6.2 Determination of Search Grid
The first modifier to be considered is subwoofer gain.
Intuitively subwoofer-to-subwoofer gain differentials
greater than 10 dB would seem wasteful, especially when
one considers maximum output level and efficiency at low
frequencies. Also a gain-value increment of +6 dB is attractive,
since this value could be implemented by doubling
the number of subwoofers at a single location. With
these factors in mind a range of acceptable gain settings of
0 to −12 dB seems reasonable.
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