It does. A 38some inch line with a mass-loaded terminus at the bottom.
Similar in height to the microTower ML-TL. About the same cross-section of a Quad microTower.
A BR assumes a shape fairly close to a cube. As one dimension starts to become significantly larger than the other dimensions it transitions into a Mass Loaded Transmission Line.
dave
Similar in height to the microTower ML-TL. About the same cross-section of a Quad microTower.
A BR assumes a shape fairly close to a cube. As one dimension starts to become significantly larger than the other dimensions it transitions into a Mass Loaded Transmission Line.
dave
That is the equivalent of a transmission line, that is what I think is the meaning of his post.
The whole box is a transmission line, it does not need to have any folds it is a straight pipe.
Last time i will say it, you can continue beating your head against the wall, but the physics are the physics.
Compilation of MJK ANSYS simulation of BR vrs ML-Voigt (an ML-TL variant).
dave
Last time i will say it, you can continue beating your head against the wall, but the physics are the physics.
Compilation of MJK ANSYS simulation of BR vrs ML-Voigt (an ML-TL variant).
dave
nah that has some sort of bitumen in it as well.
i already have bitumen in my proacs
I have long thought that vibrations from lower frequency drivers influence the HF. I've only made 3 speakers and try to have separate boxes or insulate the HF driver each time. As a very subjective, no cost first experiment, could you consider loosening the HF driver (not so much as to allow it to rattle) and listening to the result. Then (as you may get some 'chuffing' from the bass pressure waves coming out of the gap) make a simple gasket from a closed cell foam (draft excluder maybe) and use that in between, but not to firmly screw down the HF driver. One can get an idea of the issues involved by VERY lightly touching the cabinet local to the HF driver and if at all possible (I've done it with silk domes but not hard domes, be very very careful) touch the HF dome. You may find that the cabinet seems to vibrate more than the HF.
You seem surprised ?
🙂
I've seen on some Naim speakers where they tried to decouple the drivers from the cabinet.
https://skyfiaudio.com/products/ful...est-components-fully-active-with-nbl-speakers
https://www.stereophile.com/floorloudspeakers/318/index.html
Sorry, but I don't see how a thin layer of bitumen stiffens anything. Dampens it yes, by mass and by allowing the vibrations to 'slowly' dissipate. Using the example of a car door, the bituminous panel stuck to the inside deadens the panel. Try gently pushing on it from the outside, it's not really any stiffer though is it?
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Different layers of veneer make up plywood, do they not?
Individually they are not so stiff.
The adhered bitumen restricts the unwanted vibration in the wood, just like it does in a car door.
Do you understand now?
The purpose is as a damping material, not a mechanical support.
Individually they are not so stiff.
The adhered bitumen restricts the unwanted vibration in the wood, just like it does in a car door.
Do you understand now?
The purpose is as a damping material, not a mechanical support.