Standard Bass Trombone

Standard Bass Trombone

Our standard trombone and euphonium mouthpieces are arranged on our specification chart in a logical ascending order from deep to shallow, No.5GW to No.15 in tenor, No.1 to No.8H B.S. / 61/2AL in bass and No.5G-S to 7G-S in Euphonium/Baritone.
As rim size does not directly correspond to cup depth, please observe inside cup diameter for finding optimal response.
The comparison column on this chart (and all charts in the catalog) offers rough comparisons only. The comparisons are given for casual references only.
*Please note all Euphonium/Baritone mouthpieces come with an "S" (symphonic) backbore. "S" (symphonic) backbores available in Tenor and Bass Trombone mouthpieces on special order.
*Because euphonium mouthpiece receivers vary, please specify manufacturer of euphonium when ordering. Click Here for Pricing (Will open a new window.)*

Bass Trombone Model No.	Outside Cup dia.	Inside Cup dia.	Cup Depth	Drill Venturi	Length	Comparison Only
1	1.540 in. 39.12 mm	1.110 in. 28.19 mm	1.238 in. 31.45 mm	0.281 in. 7.14 mm	3.170 in. 80.52 mm	11/2 G Oversized
11/2 G	1.540 in. 39.12 mm	1.096 in. 27.84 mm	1.203 in. 30.56 mm	0.281 in. 7.14 mm	3.170 in. 80.52 mm	Bach 11/2 G
3	1.540 in. 39.12 mm	1.096 in. 27.84 mm	1.153 in. 29.29 mm	0.281 in. 7.14 mm	3.170 in. 80.52 mm	Bach 2
4	1.540 in. 39.12 mm	1.026 in. 26.06 mm	1.120 in 28.45 mm	0.277 in. 7.04 mm	3.170 in. 80.52 mm	Bach 4
5G	1.538 in. 39.07 mm	1.006 in. 25.55 mm	1.100 in. 27.94 mm	0.261 in. 6.63 mm	3.170 in. 80.52 mm	Bach 5G
5GW	1.538 in. 39.07 mm	1.006 in. 25.55 mm	1.100 in. 27.94 mm	0.261 in. 6.63 mm	3.250 in. 82.55 mm	Bach 5G
5J	1.538 in. 39.07 mm	1.006 in. 25.55 mm	1.100 in. 27.94 mm	0.277 in. 7.04 mm	3.170 in. 80.52 mm	***
8H B.S./61/2AL	1.534 in. 38.96 mm	1.026 in. 26.06 mm	1.047 in. 26.59 mm	0.266 in. 6.76 mm	3.170 in. 80.52 mm	Bach 61/2 AL

Tenor and/ or Bass Model No.	Outside Cup dia.	Inside Cup dia.	Cup Depth	Drill Venturi	Length	Comparison Only
9B-S	1.545 in. 39.24 mm	1.026 in. 26.06 mm	1.091 in. 27.71 mm	0.250 in. 6.35 mm	3.140 in. 79.76 mm	Bach 5
5F-S	1.534 in. 38.96 mm	1.015 in. 25.78 mm	1.083 in. 27.51 mm	0.257 in. 6.53 mm	3.170 in. 80.52 mm	Bach 3
8H-S	1.534 in. 38.96 mm	1.026 in. 26.06 mm	1.047 in. 26.59 mm	0.266 in. 6.76 mm	3.170 in. 80.52 mm	Bach 6 1/2 AL
6E-S	1.534 in. 38.96 mm	1.015 in. 25.78 mm	1.045 in. 26.54 mm	0.250 in. 6.35 mm	3.170 in. 80.52 mm	Bach 3
7G-S	1.534 in. 38.96 mm	1.015 in. 25.78 mm	0.996 in. 25.30 mm	0.261 in. 6.63 mm	3.170 in. 80.52 mm	Bach 3