Mosfet mist?


Greetings,

I have read several articles on the sonics of mosfet amps to include Adcom,B&K,Counterpoint,Perreaux,etc. What exactly is mosfet mist and how would one know what to listen for. Are some amps more prone to this mist than others? I have a Perreaux 1150B doing woofer duty on a pair of Focal 706s spkrs(A modified Parasound 1000A on top)How would say the 1150B compare with a B&K in relation. Thanks.
south43

Showing 2 responses by sumikito

The best way to collect and actually see mosfet mist is to first find a powered subwoofer powered by an internal mosfet based amplifier with no heatsinks for cooling on the outside.All the cooling has to come from the inside of the woofer enclosure.The powered subwoofer should also be a ported design with only one port to the rear of the box where the internal power amp controls are located.Leave your powered subwoofer in a damp enviroment such as a basement etc. overnight. Now you are ready to collect some mosfet mist.Take your now prepped sub back into your listening room and hook it up to your system and play some recordings with some deep bass like pipe organ and such.Collecting and examining mosfet mist is now easy.Get yourself a brand new dry and clear ziplock bag and hold it nice and tight up against the port opening of your sub while playing your organ music.It should fill up in no time with this very elusive mosfet mist.You should also now not only see this quite rare mist but feel it inside the ziplock bag.You may also fill a few to send to those unbelievers out there to quite them down.Mosfet mist,yes it does exist!!!
Very well said Atmasphere,that is exactly what happens and I have heard it on speakers with a lot of capacitance in their crossover networks like 18/24db designs and large caps in thier woofers,shunts for instance.Mosfet amps tend to sound quite nice with 6db network speakers.Now back to my collected Mosfet Mist.Anybody out there want any free samples?