crooner;194401 Wrote: > > Also, enclosing the whole unit in a metal case will shield it against > the magnetic fields surrounding it, such as those from the power supply > itself or nearby components. > > This should also work the other way around, minimizing RFI/EMI energy > radiation from the SB2 to other components...
Unless you box it up in mu-metal, the metal case will not prevent magnetic fields such as those from that big power supply transformer from flying about. Metal shields are good for shielding against electric fields. The difference is that electric fields induce voltages (primarily) in high Z circuits through capacitive coupling while magnetic fields induce currents (primarily) in low Z circuits through, you guessed it- inductive coupling. That is one reason why I suggested using a power supply more in line with what the circuit actually requires. That big supply transformer has a much larger leakage field around it than a smaller one and the only practical way to "shield" it is to keep it as far away from the audio circuits as possible. This is why many resort to putting power supplies in boxes separate from the audio circuits. TD -- tyler_durden ------------------------------------------------------------------------ tyler_durden's Profile: http://forums.slimdevices.com/member.php?userid=2701 View this thread: http://forums.slimdevices.com/showthread.php?t=34291 _______________________________________________ audiophiles mailing list [EMAIL PROTECTED] http://lists.slimdevices.com/lists/listinfo/audiophiles
