S.E. Shires Custom Series Tuning Slide


Trombone Tuning Slides

S.E. Shires trombone tuning slides are engineered with a unique, smooth, double-radius design. They combine the best characteristics of single- and double-radius tuning slides in terms of timbre, response, and intonation. Tuning slide models are specified by letters indicating instrument type, material, taper, and whether the slide crook is seamed or unsealed.

Instrument type designations

  • S: small-bore tenor trombone
  • T: medium- or large-bore tenor trombone
  • B: bass trombone

N.B.: S.E. Shires alto trombones are equipped with a tuning-in-slide mechanism—they do not have bell-side tuning slides.


Tuning slides are available in either yellow brass, for clear sound and articulations, or gold brass, for warmer sound and more rounded articulations. Many customers have found that a gold brass tuning slide complements a yellow-brass bell, adding warmth to the sound, while a yellow brass tuning slide complements a gold- or red-brass bell, clarifying the articulations and keeping the sound focused.

  • Y: yellow brass
  • G: gold brass


Tuning slide crooks in several different tapers have been designed for each type of trombone, to meet players’ different needs.

Small bore

  • (No number): The original S.E. Shires small-bore tuning slide taper——very open feel
  • 1.0: Centered and clear, somewhat open feel
  • 1.5: Newer design—improved intonation and response/feel characteristic of classic small-bore instruments—our most popular small-bore tuning slide


  • [Unmarked]: Standard orchestral tenor tuning slide taper, by far the most popular, known for its open, clear, flexible sound, and superior intonation
  • X: Focused tenor tuning slide taper—aligns harmonics in a way familiar to players accustomed to classic New York instruments—works well with TB handslides and TII bells


  • B: Produces a compact feel and centered sound
  • C: Designed for players who prefer an open feel and larger sound

Other Options

Unseamed/seamed crook
Tuning slide crooks may be made from an unseamed tube, or formed from flat brass sheet with a brazed seam before being drawn. Seamed tuning slides tend to project better, but may not provide as much feed back to the player as an unseamed tuning slide. Seamed tuning slides are also slightly more expensive. Seamed tuning slides are denoted with an S at the end of the model designation.

  • [Unmarked]: Unseamed crook
  • S: Seamed crook

SY1.5—small-bore tuning slide in yellow brass with 1.5 taper, unseamed crook
TY—orchestral tenor tuning slide in yellow brass, standard taper, unseamed crook
BGCS—bass tuning slide in gold brass, C taper, seamed crook

Free shipping on domestic orders above $39.

Questions? Call us at (817) 993-6400 x1.
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The S.E. Shires company slogan, Quality without compromise™, is more than simply a marketing tool. It is Steve Shires’ heartfelt conviction and his fundamental principle for both manufacture and design. S.E. Shires Co. builds nearly every part on its custom instruments in its Holliston, Massachusetts workshop, as it has since 1995. A member of the S.E. Shires team play-tests every instrument thoroughly before it ships. Steve’s attention to design and his keen understanding of how it affects sound and playability is unsurpassed by any other brass instrument maker. He has parallel commitments to the highest standards of modern manufacturing, which make his instruments consistent and mechanically superior, and to the old-world craftsmanship which gives them a distinctively resonant voice appreciated by players the world over.

In May, 2014, Eastman Music Company purchased the S.E. Shires Company. Based in Pomona, California, Eastman is well known for the quality and value of its broad offering of band and orchestral instruments. With the backing of Eastman, S.E. Shires has been able to increase its instrument line, production capacity, and worldwide presence, while maintaining its core commitment to quality, in-house manufacturing.

Additional information

Weight.25 lbs
Dimensions6 × 6 × 1 in



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