I have a pair of infinity 6x9 300w speakers, they are only about one and a half years old. I noticed that one of the speaker isnt working properly. Its a 3way speaker and only the tweeter is working on one speaker, the cone itself isnt working at all, so no bass is coming from the speaker. I have checked the wiring and it isnt that, the speaker itself apears to be in perfect condition, no damage to the cone, so i think it may be a wiring problem inside the speak, but i dont know if i can get to it. Is it possible to take it apart or what should i try?!
Any advide would be greatfully recieved! Thanks, Chris
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Those cone covers are important because they distribute the audio of the driver over a wider range. The defect will not cause further troubles nor will it get worse. Most people are capable of repairing them yourself. If you lost the old cone a replacement is necessary. You will need preferably the part number off the back of the speaker to get a replacement. Carefully measuring the diameter of the cone according to where the old glue shows it was attached will also get you the part. Just use Elmer's White glue to reattach. It get's tacky after a few minutes and the cone should sit there and dry for a few hours after replacement. Check for speaker repair parts online. You will find bunches of suppliers.
If the speaker has been overdriven, it may have damaged the cone surround or damaged the speaker coil, causing it to 'rub' inside the magnet. To check for rubbing, you need to move the speaker cone backwards and forwards by hand and listen where the speaker coil/cone goes into the magnet. It should be silent if ok. If you can heara rubbing or grating noise, then the speaker is damaged. If the output driver on the amp is damaged it can give a distorted sound, which could easily happen if it tries to provide too much current.
Looks like a broken copper braid that links the speaker terminal to the cone (from there on it goes to the coil which is underneath the cone).
Check the speaker connection terminals (near the magnet), you will notice that each terminal has a copper braid wire going from that terminal to the speaker cone.
Inspect both braid wires carefully at each end (near the speaker terminal and near the speaker cone), there will either be some damage to the braid at one or more of these four locations or the braid could be actually broken at any of these spots.
The braid can actually be resoldered at the point where it's damaged or broken - this task will require good soldering skills, mainly because this kind of braid wires are difficuld to solder (they are a bit difficult to clean because of their structure and solder won't attach itself well to oxydized copper), but also because some speaker cones are made of plastic which may melt if you overheat it with a soldering iron.
Besides that, when resoldering is being done, only a very short portion of the braid should be wetted with solder because the solder point will become rigid when the solder cools down, and the braid needs to remain very flexible when the speaker operates (if it's too rigid or too short, damage to the speaker cone could occur or the braid could get broken again when the speaker will be playing at a loud volume).
Hope you can have it repaired, it can be done at home, but there are also speaker repair shops where you can get it done (i'm not sure about the prices though).
Anyway, the alternative is to replace the speaker itself.
Swap speakers over...check the balance isn't fully to the other channel...swap left/right phono cables over (if thats how your using it) other than that i would say is broke.
Easy way to check speaker cable/speaker... touch a small battery (like used in a remote) across speaker wires, you will hear and see the speaker cone move.
I have what sounds like the same problem with my Infinity's. Found a small crack in the foam surrounds of the speaker cone. Looking for a place to buy rebuild kits on the internet when I found this. Hope this helps.
If the rip or split extends from the voice coil out to the edge, the speaker may be too far gone to replace. I have repaired expensive speaker cones with epoxy cement, provided the tear is fairly small or narrow. No noticeable degradation of performance either.