Parduba Double Cup Mouthpieces Throat Diameters?

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Johntrom
Posts: 9
Joined: Nov 14, 2018

by Johntrom »

Anyone know what the exact throat diameter of these trombone mouthpieces are? Easy enough to find charts with the cup depth/diameters but absolutely nothing on the throats.

Thanks in advance.
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Posaunus
Posts: 5018
Joined: Mar 23, 2018

by Posaunus »

I have a Parduba *4½* and a *5* small-shank mouthpiece (which play surprisingly better than I think they should).

Each has a 5.85 mm (0.230 in.) Throat.
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Doug_Elliott
Posts: 4155
Joined: Mar 22, 2018

by Doug_Elliott »

I have an original Parduba 1 in my collection which measures to me somewhere around .930 to .935 ID. The throat is .229
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DRTrombone
Posts: 13
Joined: Jul 03, 2024

by DRTrombone »

I’ve got a *2* that came with a 1940s trombone. Can’t quite get my callipers deep enough into it, but eyeballing it I’m going to say 0.228”.
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DRTrombone
Posts: 13
Joined: Jul 03, 2024

by DRTrombone »

Bit of research courtesy of ChatGPT, 0.228” is a standard #1 drill size: <LINK_TEXT text="https://littlemachineshop.com/reference ... llsize.php">https://littlemachineshop.com/reference/numberdrillsize.php</LINK_TEXT>