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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: RE: 1.7 frame damping posted by zulugone on December 26, 2016 at 18:54:05:
The bending and swaying is mostly a bass issue The results of bracing reported by me and ,many others is tighter bass and better dynamics. It makes a particularly big difference if you listen at real life levels as in the front orchestra. On single panel maggies the midrange clarity improves as well, We can ascribe that to less IMD from the frame motion.
The midbass region usually has substantial dynamics to it and maggies don't distort much in that region, as opposed to the bottom octave. But the response to bracing is significant in improving performance there.
The vibrations in the MDF come mostly from bass as the floating panels don't transfer much energy midrange and up - the MDF is not a good impedance match to the steel nor is the steel a good impedance match to mylar. So the ringing and transverse waves that are the self noise of the planar drivers are trapped in the panels and are eventually damped by air. In the meantime they muddy up the sound.
The stands usually have adjustable spikes or flat feet that you can use to level the speaker. I put some on my feet but it is too inconvenient to reach so I use shims instead.
Your idea of using a gel or foam between the driver frames and the MDF is a good idea. and will help damp the driver and reduce the transverse waves and the kazoo noise they cause. Once you have done it you will notice what it does.
The CLD on the magnet board should control the ringing without you needing to cover the entire back of it. Start with the center 1/4 and go from there if it seems worthwhile to do more of the surface.
The bracing of my TIV bass panels to the sidewalls is done with a dowel like you suggest. It is very effective and makes a big difference at high volumes. It should do as well as doing a triangular brace if the feet are well anchored. Big weights can take care of that side of things.
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- RE: 1.7 frame damping - Satie 00:14:50 12/27/16 (0)
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