It may not seem great, but I don't think its the end of the world. The blown speakers aren't that hard to fix. I'll summarise the way to do it. Should anyone require further details or clarification, please ask.
1] You need to work out which
driver or drivers inside the
speaker have blown.
2] You then need to take the grill off and pull the broken
driver out and write down the brand, model, part number,
etc. Do this for all the blown drivers.
3] Once you have compiled this list, give your nice friendly dealer a ring and ask them to order you the voice coils for all those blown drivers. Alternatively, you may be able to source them directly from the manufacturer or some other place.
4] Once your voice coils have arrived, you want to completely remove the blown drivers from the cabinets, disconnecting wiring as needed, but recording what went where so that your
speaker still works properly at the end of this and the cabinets are not out of
phase to each other.
5] Take the
driver and carefully remove the
cover off the back.
6] Carefully remove the old
voice coil and insert the new one.
7] Reattach the back and put the
driver back into the cabinet.
8] Test your repaired
speaker, being sure to start at a low volume so that if something is wrong, you won't immediately blow your new coils.
If you could
send us a picture of the blown
voice coil, I should be able to tell why it blew. There are two main causes and they show up differently on the blown coil. It could be prolonged overloading or it could be a
spike, caused by something like a mic dropping or being plugged in with phantom on and the
channel up.
Now for the blown mics. If their
Shure, replacement is the most viable option. A new capsule is close to the price of a new mic and so it is not worth your while trying to fix it. On the other
hand, some brands are worth fixing, so you would want to be calling a dealer to find out what a new capsule is worth. It should then be as simple as unsoldering the old capsule and soldering in a new one. The thing being, that it might be worth your while to get a dealer to replace the capsule if you are a
bit unsure. I know that my dealer charges about AU$30 to replace a capsule and the Sure capsules are like AU$20 cheaper than a new mic so you can see why I say that it is uneconomical.
Dropping mics does have a tendency to destroy capsules so that may be why they blew.
Well done on finding things you did not know existed, now if you can get the blown ones fixed, you have increased your inventory.