Speaker Crackling Problem

[BetD]

Hello,
My speakers have a crackling noise. This occured immediately after having it cleaned. Any ideas I can try to figure out this problem?

 

[AntiZig]

what do you mean by getting it cleaned?

crackling is either the speaker starting to fail
or interference from wires/power lines typically resulting from unprotected wires/connection
or a connection spot getting worse thus resulting in bad transmission

 

[marbski]

check the wiring on it..maybe there is a loss contact...