Overview
This Conn 78H (serial 378317) was built in 1948 during Conn’s celebrated Elkhart era, a period widely regarded for exceptional craftsmanship, consistency, and tonal identity. The 78H occupies a crucial place in American trombone history, serving as one of the primary medium-bore orchestral and professional tenor trombones before the introduction of the Conn 88H.
This example features the classic deco-style bell engraving, an 8" yellow brass bell with an unsoldered rim, and original lacquer showing only modest, honest wear. It has not been over-restored or altered cosmetically, preserving the character and feel that vintage Conn enthusiasts value.
The handslide has been professionally set up by a previous pro player, with new inner slide tubes, perfect alignment, and exceptionally smooth action. It is configured for a press-fit removable leadpipe, offering flexibility for modern players.
Historical & Player Context
During the 1940s and 1950s, medium-bore trombones in the .522–.525 range were the standard for many American orchestral players. Models like the Conn 78H and the Bach 36 were the go-to professional choices prior to the widespread adoption of the Conn 88H.
While often associated with orchestral use, the 78H has long been embraced by jazz and commercial players as well. Compared to a Conn 6H, it plays noticeably larger, with more breadth and weight — yet the Conn DNA is unmistakable. Many jazz players adapt to this model quickly, appreciating the added core and projection without losing flexibility.
From a practical player’s standpoint:
If I were starting over today, this is exactly the size and type of horn I’d be playing for jazz and commercial work.
Leadpipe & Setup Details
This trombone is currently fitted with a S.E. Shires medium-bore .525 #2 yellow brass leadpipe, which accepts a standard small-shank mouthpiece. The pipe still retains threads for a threaded collar but fits snugly and securely as a press-fit and plays extremely well in its current configuration.
At buyer’s request, we are happy to:
Remove the threads and keep the pipe as a clean press-fit
Flush-fit the pipe
Permanently solder the pipe in place
Please let us know your preference at checkout or give us a call to discuss options.
Player Perspective
The slide on this 78H is exactly what experienced players hope for: perfectly aligned, smooth, and quiet, with a feel that reflects thoughtful professional setup rather than factory tolerances alone.
Tonally, it delivers the broad, centered Conn sound associated with Elkhart-era instruments — capable of blending beautifully in orchestral textures while still offering the clarity and response jazz players need. It’s an excellent all-around medium-bore tenor that feels relevant and usable today, not just historically interesting.
Condition Summary
Vintage Conn 78H, Elkhart era (1948)
8" yellow brass bell with unsoldered rim
Original lacquer in good condition with modest wear
Deco-style bell engraving
Pro-set handslide with new inner tubes and perfect alignment
Configured for removable press-fit leadpipe
Includes S.E. Shires .525 #2 yellow brass leadpipe
No major dents or structural issues
Case
Includes an early-generation Protec lightweight case, black exterior with poly-foam construction and zipper closure. Functional, protective, and easy to transport.
Questions Trombone Players Often Ask
Is the Conn 78H suitable for jazz playing?
Yes. While originally favored by orchestral players, many jazz and commercial musicians play the 78H for its broader sound and Conn responsiveness.
How does it compare to a Conn 6H?
The 78H plays larger, with more core and weight, but retains the same Conn tonal DNA. Players often transition quickly between the two.
Can the leadpipe setup be changed?
Absolutely. The current Shires pipe can remain press-fit, be modified, or soldered in place based on player preference.
Why Players Trust The Brass Exchange
🛡️ Every instrument we sell is personally evaluated, accurately represented, and described from a player’s perspective. Since 2010, specializing in professional and vintage brass instruments, we focus on how a trombone actually plays, not just how it looks.
Availability & Next Steps
This Conn 78H Vintage Elkhart Era Trombone is available now.
👉 Browse trombones currently in stock if you’re looking for an instrument to play right away
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