Can a driver "blow" due to something other than clipping? I've had my ceramic Norh 4.0 speakers for about 4 months now, and the midrange stopped working on one of them. I removed the driver and it reads as "open" to an ohm meter. Norh told me that this type of damage is not covered by warranty, since it is caused by clipping. But I have never driven these speakers at high volume levels (95 db max). So what went wrong (I don't want to blow another one!)? I was originally driving them with an old JVC RX905 receiver (near their top of the line in 1992) which I've used for 10 years without problems (never blew a driver even at high levels) - does the amp matter? What about the source - I originally played some less-than-perfect MP3 files?