The Conn 88HYCL Symphony trombone has a .547-inch primary bore combined with an open wrap .562-inch bore F attachment, offering outstanding clarity and projection with an open feel.
It features the patented CL2000 valve designed by international soloist Christian Lindberg, presenting the shortest ‘throw’ of any trombone on the market today and a rapid transition to the F side of the instrument. The yellow brass bell material produces a rich yet lively sound with a quick response.
| F attachment/valve | Bell material | ||
|---|---|---|---|
| Rose brass | Yellow brass | Thin rose brass | |
| Closed wrap/traditional | 88H | 88HY | 88HT |
| Open wrap/traditional | 88HO | 88HNV | 88HYO | 88HTO |
| Open wrap/CL2000 | 88HCL | 88HYCL | 88HTCL |
The ‘88H’ was introduced in 1954 by C.G. Conn of Elkhart, Indiana, as part of the expansion of their 8H large-bore trombone design. Featuring a .547-inch bore, 8½-inch rose brass bell, and F-attachment, its broad, warm orchestral sound matched the evolving tonal requirements of American orchestras, and helped standardize the modern large-bore symphonic setup. Many variants—open-wrap configurations, alternative bell materials, and artist collaborations—followed. Despite corporate transitions, the 88H remains a benchmark of orchestral trombone construction worldwide in the twenty-first century.
Manufacturer’s website: conn-selmer.eu