Seven years old for speakers that are used properly used/cared for is just the beginning, they should last a lot longer. Damaged from misuse is possible, tho, or if the damaged amp caused the problem, perhaps. Either they still work properly or they don't and they should be tested to see what particularly works or not. They have tweeters and midwoofers, is it one driver vs the other that has gone bad in some units? Have you changed the speakers to new positions to see if the problem follows an individual speaker or an individual channel?
Well, can an Amplifier damage the speakers by any chance & if that's just 2 years old? I bought this Yamaha RX-V685 Amplifier in Nov, 2018. Unfortunately, I don't have an additional working Amplifier & the one I have Harman/Kardon AVR 1700 has gone dead. When I took it to an Authorized Service Center of Harman, they said the cost to have this amplifier fixed, I can get a new one...is this true that a repair cost usually equals to cost of a new amplifier? The issue is with the Center speaker only considering the issue with with the vocals (dialogue volume level) so changing the speakers to new position I feel won't make a difference.
While the Harman Technical Support team did mention that they can send someone from Mumbai, India (since they don't have an expert in my city) to my city to have the speakers checked, but that would incur additional cost & I clearly told them that I am not ready to pay for the visit charges. I told them that I am ready to bring all the 5 speakers to the service center in my local city but it is due to their limitation of not having any good experts in my local city, "they are forced" to send an engineer from Mumbai to my city. So it they do not have a local expert, I am not at fault for the same? Why should I pay for the visit charges?
Also, I wanted to know what components inside the Center Speaker create dialogues (vocals) & which component creates vocal clarity?
I am very much confused & puzzled infact!
Are the issues actually with these Harman Kardon speakers?
Has my Yamaha RX-V685 Amplifier damaged the speakers?
I don't have an additional amplifier of any other brand to test the speakers.
I don't have an additional Center Speaker to test with this Yamaha Amplifier.
If it is the amplifier that caused damage to the speaker then, I can't take the risk to buy & hook up new speakers to this Yamaha amplifier.