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I need to install some capacitors to serve as bass blockers for door
speakers in my car.

Since my car is parked outside a lot, it seems like it may not be a
good idea to use electrolytic capacitors, but instead use something
like ceramic or mylar which don't have a paste that could dry up in the
heat.

Can anyone help me determine whether this would work? Or must
capacitors in this role be electrolytic?