A Gold Brass Bell Changes Everything
If you've spent any time around serious trombone players, you've probably heard the 42 series come up — because it's been the reference point for professional symphonic trombone playing for decades. The Bach Stradivarius 42BOG takes that foundation and swaps in a gold brass bell, which shifts the tonal character in a way that many orchestral players find deeply satisfying: a broader, warmer sound with a bit more body in the mid-range compared to standard yellow brass.
This is the horn you reach for when you want a centered, focused tone that carries in a large hall without feeling harsh. Whether you're sitting in a symphony section or working through solo repertoire, the 42BOG is built to handle the full range of demands that come with serious trombone playing.
Bach builds these trombones in their Elkhart, Indiana workshop — the same place they've been making Stradivarius instruments for generations. The craftsmanship and consistency that's made the 42 series so trusted is all here.
The Gold Brass Bell: More Than a Visual Difference
The 8.5" bell on the 42BOG is one-piece and hand-hammered — Bach's craftspeople in Elkhart shape each one individually to ensure consistent response and tone. The gold brass material (which has a higher copper content than standard yellow brass) lends the instrument a warmer, fuller tonal character. Players often find it delivers a slightly darker, more complex sound, particularly in the lower register.
The bell's 8.5" diameter gives you the projection you need in orchestral settings without sacrificing nuance at softer dynamics. It's a one-piece design, which means there's no solder seam at the bell flare — a construction detail that contributes to a more even response across the range.
Open Wrap F Attachment and .547" Bore
The 42BOG features a .547" large bore, which is the standard for professional symphonic trombones — it's wide enough to produce a big, full sound while still responding well at all dynamic levels. The open wrap F attachment keeps the tubing path as clear and unobstructed as possible, which means less back pressure and a more free-blowing feel when the trigger is engaged.
The open wrap design also reduces the number of tight bends in the F attachment tubing, which many players find makes the low register feel more even and connected to the Bb side of the horn. If you've ever switched from a traditional wrap to open wrap, you'll know exactly what we're talking about.
Slide Action and Finish
The handslide features chrome-plated nickel silver inner tubes, which provide a smooth, fast action that holds up well over time. Nickel silver is firmer and more corrosion-resistant than standard brass, which keeps the slide performing consistently. The yellow brass outer slide complements the gold brass bell, rounding out the instrument's tonal characteristics.
The whole instrument is finished in clear lacquer, which adds a subtle warmth to the sound and protects the brass from tarnish and wear — keeping the 42BOG looking and playing like new for years of professional use.
Product Features:
- Instrument Type: Professional Bb/F Tenor Trombone
- Bell: 8.5" one-piece hand-hammered gold brass bell
- Bore: .547" large bore
- F Attachment: Open wrap design for reduced back pressure and freer response
- Outer Slide: Yellow brass
- Inner Slide: Chrome-plated nickel silver for smooth, fast action
- Finish: Clear lacquer
- Handmade in Bach's Elkhart, Indiana workshop
- Ideal for symphonic and solo performance
Brand: Bach
Model: Stradivarius 42BOG
SKU: 42BOG
Condition: New
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