Double Bass New A string rattles

[Dave Koch]

I just changed strings to Helicore mediums. Everything is great except the A, which rattles obnoxiously. Any ideas? Sound post position?

 

[UNICORN BASS]

Might wanna post in DB section.

 

[Michael Case]

Try a small piece of business card in the A string slot on the nut. It could also be a wolf tone that is more pronounced with the new strings.

 

[Dave Koch]

Thanks, I’ll give that a try, then just play it for a while.

 

[David Potts]

Check that your bridge is upright and in the right position. Try a thickish calling card under the string at the nut. The groove may be too low for your new string. Does the rattle only occur in the lower positions? Are you set up with a low jazz action.? Arco may need a somewhat higher action because weighing on the strings. Is there less string tension than the brand you have replaced? Leave the sound post alone. Moving this is not going to solve you problem IMO.

Perhaps a luthier may need to check out and increase the degree of scoop in the fingerboard slightly, not a big job.

 

[Dave Koch]

Thanks, I’ll try the card thing, you’re the second to suggest this. It’s counter-intuitive to me but sometimes it’s like that. My luthier will be back in town in a few days. Thanks again.

 

[Dave Koch]

Thanks, I’ll try the card thing, you’re the second to suggest this. It’s counter-intuitive to me but sometimes it’s like that. My luthier will be back in town in a few days. Thanks again.

Biz card at nut did the trick!! Thanks!

 

[Dave Koch]

Thanks, I’ll give that a try, then just play it for a while.

Biz card fix succesful, thanks a million.