Hey, I just bought a used Double Bass. Its about 50 years old and pretty beat up. I got it for cheap ($800) but other than that dont know how to tell what kind it is or anything else. Anyways its been all good since I bought it 2 weeks ago. Untill Today it started to make a buzz. There is a hole in the bottom about the size of my thumbnail and another wound the same size where the wood is cracked. Like a hole but the wood is still there, its hard to explain but I hope you kindof understand. When I play C in any octave other that the low C it makes a whole body buzzung sound. Not a string buzz but a vibrating whhaaaaawwww sound. I know this post seem silly because I know you will all say the obvious "Take it to a Luthier" which I will do but I guess im just sad and frustrated and was wondering if anyone had any advice as to pinpoint the problem or temporarily fix it. If its could be from humidity or just me poking the wound too much. When I bought it the guy said that a Luthier said it was not worth fixing but I guess it does now. I also just need moral support. Tell me if this has ever happend to you, what you did etc. Just want to hear from you guys and tell me what you think.