SWR Workingpro 12 200watt 1x12" Bass Combo Amp "emf" Questions

...coil is driven mostly beyond the pole pieces of the magnet. Without the magnetic field the back EMF of the voice coil drops off and the current shoots up. The voice coil can't move farther so ...

...ground plate that goes under the pick guard.  that is what I put on mine to cut the emf way down.  if you bought the guitar from a dealer take it back to the store and ask them ...

...OR if the speaker is being driven too hard and the voice coil moves too far. This reduces the back EMF and current spikes. Your speakers should be rated TWICE the power capability of this amp to be ...