This is kind of a follow on thread from post #83 on my 4645C thread
. However that was going a bit off topic from the OP so here's a new thread to deal with this issue!
Quick update. Finally got the 3677's back from a local repair shop that the supplier told me I had to go to. (Can't open anything up or I void the warranty.) To recap I was hearing light distortion from 2 of the CD's.
So they told me they replaced the diaphragms in all 3 speakers with genuine 2416h-1 diaphragms. Even in the one good one. Good news is that the distortion seems to have gone! Yay!
So I listen in the shop before I take them home, and one sounds fine. (Not the originally good one.) However the other two have a slightly more subdued, less open, less airy, more muted, rolled off HF, lower volume, a little lifeless (that's all I can think of to describe it so far ) type of sound than the good CD.
The repairer assured me that it 'should be all good now.' So I took them home to try them on my system... Same problem at home. I made my wife have a listen to see if it was just me and my imagination. I didn't tell her my thoughts about any of the speakers, but she ended up coming up with the exact same thing I am describing.
Now, I am kind of new to pro cinema speakers. However I am struggling to work out what the issue could be??? I don't feel like taking it back to the repair shop because it seemed like their experience with pro cinema speakers seemed a little limited.
What else can they do with the CD apart from replace the diaphragms in them again?
Do the new diaphragms need a period of time to 'break in' to open up? (I don't know why one sounds fine and the other two sound different when all 3 diaphragms were replaced).
Might they be out of phase? Or wired incorrectly?
I'm willing to open them up to check a few things if I can check anything?
A pic for fun...