Metallic Ring Between Tailpiece And Bridge?????

[taxman]

My Casino is just five days old and already a problem. Playing fine and then tonight for some reason the guitar suddenly rings with this metallic sound as the chord or note decays. Hit a D-Chord, dampen it, and there's a metallic ring. Where the heck was this coming from?

 

I got it down to the strings between the bridge and the tailpiece. If I hit the chord and then dampen those strings, the metallic ringing suddenly ceases. I folded up a guitar finishing cloth and put it under those strings and no metallic overtone. I now know where that ringing is coming from.

 

But why and how do I get rid of it? I tried Gibson service -- they'll call me back tomorrow. Search of the internet reveals it is an occurnece on guitars --- but mine did not do this until tonight. I want it back to the way it was. (When plugged in, the metallic ringing is audible through the amp.) I don't see how it can be a tailpiece problem (the tail is tight, the strings are snug), so is it a bridge problem as many Casinos seem to have? Any hints to get rid of it? Could upgrading to a better bridge eliminate the problem?

 

Thanks for any answers.

[carverman]

My Casino is just five days old and already a problem. Playing fine and then tonight for some reason the guitar suddenly rings with this metallic sound as the chord or note decays. Hit a D-Chord' date=' dampen it, and there's a metallic ring. Where the heck was this coming from?

 

I got it down to the strings between the bridge and the tailpiece. If I hit the chord and then dampen those strings, the metallic ringing suddenly ceases. I folded up a guitar finishing cloth and put it under those strings and no metallic overtone. I now know where that ringing is coming from. [/quote']

 

By "metallic ring", you are probably hearing a resonance somewhere between the bridge and the tailpiece would

be my guess.

resonance can originate from just about anywhere on a fully acoustic archtop, like the Casino, even if it is a

thinline archtop.

 

Typical sources are:

 

Trapieze style tailpiece..especially around the string bar or acorn nuts that affix the

string bar to the threaded rods.

 

and maybe possibly the T-o-M Bridge

 

Since damping the strings, stops the ringing, it would seem that it has something to do with the stringbar on

the tailpiece. Perhaps this occurred after a recent retuning?

 

If the tailpiece acorn nuts are not tightened to the end of the threads inside the acorn nut cavity, or

are unevenly tightened, this can set up a imbalance in the tension across the string bar that all

6 strings are anchored to. Tension imbalance is there on all guitars because each string will present

a unique tension to the string bar at the correct tuning, depending on it's guage. The more massive

the tailpiece, the more metal to support the strings to distribute the tension across the tailpiece.

 

This is one of the advantages of the frequensator. The bass segment has it's own string bar as well

as the treble, so the tension on the 6 strings is distributed in a different manner and there is less

resonance as a result, although the tp itself has a tendency to crack at the mounting plate due to

string tension issues.

 

There are a couple things, you can try:

 

1. release the tension on the strings and retune..to see if it's still there

 

2. Place a chunk of stiff foam under the string bar temporarily to see if it goes away.

 

If it does, then you need to remove the strings and string bar, by undoing the acorn nuts, and check to see if there

are any burrs or string groove binding that is causing the resonance/ringing under tension. Fit each string to the

groove with the bar removed and see if any string ball or string winding is too tight. If it is, then perhaps

Epiphone could help you there with some kind of exchange on the tp.

 

 

 

 

2.Height adjusting screws on the the pickup, but the Casino has P-90,so that probably isn't the problem on this

model.

or the t-o=m

Try this: