I have a pair of Forte speakers that I purchased a few months ago. They were working perfectly and sound great, but recently the right channel speaker started to output very low volume. To be clear, there is signal. I hear the sound, but it is very low. There is no issue with the source, amp, preamp, or wiring. I tested all of them. There were a few occasions when a phone was connected to the soundsystem using a 1/8 inch jack while the system was powered. This causes a loud pop to come through the speaker. Is it possible that something "burned" when this happened? How do I troubleshoot the speaker itself?
I appreciate any advice. Thank you!