solderdude
Grand Contributor
blowing up 2 drivers requires excessive power (really really loud for longer periods with considerable sub-bass boost perhaps ) or DC on the output of the amp.
I would suggest checking for that first before hooking up other headphones.
For DC to demolish the DT1990 drivers there needs to be at least 3V DC on it.
Maybe blowing compressed air on the driver could kill drivers but other than that I don't see how one can demolish 2 drivers by just cleaning headphones.
The wires inside won't be moving anyway unless you touch them (opening them up)
When after resoldering the wires nothing changed and the wires only broke off after you wiggled the wires then it stands to reason that the wires will still soldered when you opened them and is not the culprit.
I would suggest checking for that first before hooking up other headphones.
For DC to demolish the DT1990 drivers there needs to be at least 3V DC on it.
Maybe blowing compressed air on the driver could kill drivers but other than that I don't see how one can demolish 2 drivers by just cleaning headphones.
The wires inside won't be moving anyway unless you touch them (opening them up)
When after resoldering the wires nothing changed and the wires only broke off after you wiggled the wires then it stands to reason that the wires will still soldered when you opened them and is not the culprit.