At 08:52 PM 5/20/99 +0200, you wrote: >List > >Just ran into a rebuilt hamburg B. It has this really strange quality of >sound. Starting with the first unwound string, and continuing up about >to c6 there is this extremely loud and annoying... how shall I describe >it.. "WOWAAaaaaaaa" sort of beat. It cycles once, encompases all >partials and disapears. I tried taping the bridge, bottoming bridge >pins, etc. and no difference.. Running a roller along the length of the >string seemed to quite it a bit for a few minutes, but then it returns >full strenght.. > >Any ideas what this is about ? > >Richard Brekne > That's plain strings and agraffes, but I don't think that has much to do with it since the noise is so general. Likewise for string seating and bridge pins. Everyone always seems to want to try that first, and no one has ever reported that it fixed the problem that low in the scale. I figure it's a BIG problem that covers a significant area of the scale. Therefor, it's probably a BIG part that's causing the problem. Well, yea, that's pretty simple minded, but then so am I and this kind of logic has gotten me this far so I'm sticking to it. Check soundboard glue joints, ribs and perimeter, crown and bearing, and under plate for foreign objects. Grab each plate strut while whacking keys to see if the noise stops. They can hum quite loudly sometimes. Are the nosebolt nuts tight? Including the bell? How about the lock, or the lid prop. They buzz in sympathy and sometimes sound like something else. In other words, try to ascertain where it's coming from non destructively before you attempt a fix. Let us know what you turn up. Ron
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