That speaker is getting so old that it might have troubled electrolytic capacitors in its crossover, too. tomic601's suggestion of crossover swapping would prove that angle out, as well.
ADS L810
I have enjoyed my ADS L810 speakers since I got them in 1980. Lately, I have noticed some distortion coming out of one of the midrange drivers from the right channel even at low volume. In order to troubleshoot the problem (speaker, program source, or wiring), I switched speaker connections,….. R-L and L-R. The distortion moved to the left channel. So, I narrowed the problem to the speaker itself. Although I have taken good care of them, I realize that speaker components cannot last forever. There is no obvious external damage to the speaker. Can anyone provide me with any input as to how I can further troubleshoot this speaker?
Thank you very much for your assistance on this matter.
Thank you very much for your assistance on this matter.