[JPL] Valve trombones and slide trumpets

Peter Solomon psolomon at ideastations.org
Tue Dec 20 14:02:25 EST 2011

"Other than that, there's the length of the tubing of the trumpet or
trombone and most significantly, the bore size.  Trumpets have a bore size
of around .450 to .472 and typically around .459 or so.  Bass trumpets have
a bore size of around .486 which is invading on the bore size of a

So you are saying trombones are bigger bores?

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