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#1
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Liquid inside a tweeter
I own a Moudaunt-Short MS10i Classic bookshelf loudspeaker. Recently
one of the tweeters stop working. I was able to fix it since it was a broken wire in the coil connection. However, in this disassembling process I found (in the two tweeters) a dark brown liquid inside the circular groove in the magnet where the coil is supposed to stay. Is this liquid part of the tweeter mechanism (and the coil is dipped on it) or is just moisture accumulated over the years? I am afraid to dry it up. Any help would be very welcome. Thanks very much. Jose Carlos Brunelli |
#2
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Karl Uppiano wrote:
"JCBrunelli" wrote in message m... I own a Moudaunt-Short MS10i Classic bookshelf loudspeaker. Recently one of the tweeters stop working. I was able to fix it since it was a broken wire in the coil connection. However, in this disassembling process I found (in the two tweeters) a dark brown liquid inside the circular groove in the magnet where the coil is supposed to stay. Is this liquid part of the tweeter mechanism (and the coil is dipped on it) or is just moisture accumulated over the years? I am afraid to dry it up. Any help would be very welcome. Thanks very much. Jose Carlos Brunelli The liquid is most likely ferrofluid coolant. It is supposed conduct heat away from the coil. And - surprise surprise - more importantly to dampen the resonance frequency of the unit. DO NOT REMOVE IT, it is required for the cross-over to work as intented and thus VERY MUCH a part of the tweeter mechanism. The same unit, with no ferrofluidics, will need a much more complicated cross-over and will have a gravely different impedance curve. Kind regards Peter Larsen -- ******************************************* * My site is at: http://www.muyiovatki.dk * ******************************************* |
#3
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"JCBrunelli" wrote in message m... I own a Moudaunt-Short MS10i Classic bookshelf loudspeaker. Recently one of the tweeters stop working. I was able to fix it since it was a broken wire in the coil connection. However, in this disassembling process I found (in the two tweeters) a dark brown liquid inside the circular groove in the magnet where the coil is supposed to stay. Is this liquid part of the tweeter mechanism (and the coil is dipped on it) or is just moisture accumulated over the years? I am afraid to dry it up. Any help would be very welcome. Thanks very much. Jose Carlos Brunelli The liquid is most likely ferrofluid coolant. It is supposed conduct heat away from the coil. |
#4
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JCBrunelli wrote: I own a Moudaunt-Short MS10i Classic bookshelf loudspeaker. Recently one of the tweeters stop working. I was able to fix it since it was a broken wire in the coil connection. However, in this disassembling process I found (in the two tweeters) a dark brown liquid inside the circular groove in the magnet where the coil is supposed to stay. Is this liquid part of the tweeter mechanism (and the coil is dipped on it) or is just moisture accumulated over the years? I am afraid to dry it up. Any help would be very welcome. Thanks very much. Jose Carlos Brunelli Explanation here http://www.ferrotec.com/usa/audio_fluids_overview.htm *Don't* 'dry it up' ! Graham |
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