After a busy few weeks, my PA speakers are not sounding quite right. My main speakers and monitors are all rather old, so I guess it's about time they were checked over & repaired as needed. We may have damaged them, or more likely they have degraded over time and I have only just noticed.
In particular one of my mains (JBL MPro 412) sounds a little muffled in the high end, and I suspect we may have damaged the HF driver. Also, my monitors (Passive FBT Maxx 4) sound different to each other.
But where to start? Is there a simple way to check drivers are healthy (checking resistance with AVO?).
Do the caps on the crossovers degrade like they do in old valve amps?
Any guidance would be really welcome. Especially as I don't speak the local language here to well, so dealing with repair guys is hard work, and expensive!
In particular one of my mains (JBL MPro 412) sounds a little muffled in the high end, and I suspect we may have damaged the HF driver. Also, my monitors (Passive FBT Maxx 4) sound different to each other.
But where to start? Is there a simple way to check drivers are healthy (checking resistance with AVO?).
Do the caps on the crossovers degrade like they do in old valve amps?
Any guidance would be really welcome. Especially as I don't speak the local language here to well, so dealing with repair guys is hard work, and expensive!
