- Aug 10, 2019
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Ok, I bought this speaker off ebay. GR center speaker. After finally setting up my rotel to get the center working I noticed that the treble was severely lacking, I mean SEVERELY lacking. Lots of checking this and that and working out it's definitely the speaker I noticed that the screws holding in the drivers were not all fully tightened. having just been ripped off on ebay I immediately got worried, have I been sold a fake speaker? No. I unbolted one of the drivers, sure enough solid silver internal wiring and all that jazz, monitor audio stamped everywhere. I laughed hard when I unbolted the tweeter, one of the wires to the tweeter had simply become disconnected. LOL, like any driver unit they are push fit crimp terminals so I just plugged it back in. It was loose so I gave it a squeeze with the pliers and it stuck. Put it all back together and now I have a working center speaker. my guess is, that the previous owner did something that caused them to need to replace part of the speaker unit, perhaps overdrove it and blew something I don't know. There is a (documented on the listing) chip in the veneer on the top left. I reckon they dropped it, the loose wire on the tweeter became detached at the went 'AWWW I broke it' and later thought 'better sell it on ebay then' hence the customary "provided that you have the patience of a saint and wait weeks for the driver elements to break in." part of the listing. Break in a second hand piece of audio gear? I think not. So this is a happy ending, would be BUT. I have one final nagging worry - not a problem right now as I am not bi-amping. during my testing to work out the issue I took the links out and drove the bass units and the treble units separately. Whichever terminals I chose it always powered up the bass units. When I had the tweeter running (albeit disconnected at the time) the two bass units still went, though not as 'vigorously'. More notably, if I held them still (not too much force of course) the sound from everything started to cut out. This made me very uncomfortable with continuing this experiment. The upshot is, I am worried that my crossover unit may be the worse side of fully operational. It's not a big circuit board and could probably be replaced quite easily - if it needs to be. Treble leaking into bass (and vice versa) might actually be an incidental effect and perhaps something the GS LCR improved upon or something (i.e. normal but not ideal). What I am worried about, as I will certainly be bi-amping at some point in the future, is amp 1 backfeeding into amp 2. The idea of that stinks to high hell in my book. I was thinking of giving monitor audio a ring tomorrow, they are fairly local to me (20min drive) so nipping in and such is not a problem.. I just wondered what you guys might think. By the way, Immensely chuffed about hearing, deducing and fixing the tweeter issue hehe 🙂