Yamaha Brass Instrument Accessories sku-24802870 45A

The Yamaha YAC SL45A is a small-shank trombone mouthpiece listed under Brass Instrument Accessories as sku-24802870, UPC 086792534251. The 45A has a 24.26 inner rim diameter, a standard rim contour and thickness, a shallow cup, a 5.85 throat and a semi-narrow backbore. Its small inner rim and very shallow cup produce a brilliant tone and make high notes easier.

Yamaha uses computer-aided design and a computer-controlled lathe to make its mouthpieces consistent. The supplied small-shank trombone mouthpiece comparison also lists the 45C2 at 24.26, the 46B at 24.58 and the 46C2 at 24.59, each with a 5.85 throat. The 47 has a 24.98 inner rim diameter.

The 48A and 48 have 25.25 inner rim diameters, with 5.32 and 6.62 throats respectively; the 48D shares the 48 rim. The 51B, 51 and 51C4 have 25.23 inner rim diameters and 6.92 throats. The 51D has a 25.24 inner rim diameter and a 7.11 throat, while the 52 has a 25.65 inner rim diameter and a 7.11 throat.