Purviance 5*K4 - what Bach is it similar to?

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Hi All,

Have a Purviance 5*K4 and wondering which Bach mouthpiece does this compare to?

Thanks,
Marc

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[John Mohan]

The Purviance 5*K4 is very similar to the Reeves 42C (but a little deeper). As such, it has an inner rim (cup) diameter that is about the same as a Bach 10-1/2C but is shallower than a 10-1/2C (but closer in depth to the 10-1/2C than the 42C is). Its rim though is much wider than a 10-1/2C's rim, so its outer rim diameter is much larger than a that of a 10-1/2C (and is actually as wide on the outside as a 3C).

I don't have a scan of the 5*K4 but I do have a scan of the almost identical Reeves 42C compared to a Bach 10-1/2C:


https://s25.postimg.cc/pnzk5vutr/10.5_C_vs._42_C.jpg
Bach 10-1/2C (red) versus Reeves 42C (green)

I also have a few other scans that will help you become acquainted (visually) with the similarities and differences of the mouthpieces. Note that the 5*K4 and the shallower 4*K4 have identical rim shapes and cup diameters. Here is a scan of the 4*K4 comparing it to a Reeves 42S (so you can see how similar the rim shape and cup diameters are between the *K4 rims and the Reeves 42 rims):


https://s25.postimg.cc/am76n9vpr/Reeves_42_S_red_vs_Purviance_4_Star_K4_green.jpg
Reeves 42S (red) versus Purviance 4*K4 (green)

And here is a scan comparing the Purviance 4*K4 (same as the 5*K4 but shallower) to a Bach 10-1/2C:


https://s25.postimg.cc/60f52v33z/Purviance_4_star_k4_vs._Bach_10.5_C_green.jpg
Purviance 4*K4 (red) versus Bach 10-1/2C (green)

(Click on any of the images to open them full-sized in a separate window.)

Hope this is helpful!

Cheers,

John Mohan
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