Detail 01
Cup design
The cup covers the bell mouth, cutting highs and softening attack. Rounder and darker than a straight mute.
Product detailSKU #1274319726544
Jo-RalB7 Bass Trombone Cup Mute
1/2
Independent shopping perspective
The Korena take
Cup mute for bass trombone. For players who need the softened, covered cup sound in big band or orchestral parts on a bass horn.
Strong match
Who this is for
- Big band bass trombone parts marked cup mute
- Orchestral players who need a covered, distant tone
- Doubling players needing a mute sized for bass bore
Consider the trade-offs
When to look elsewhere
- Tenor trombone players — the bell fit is wrong
- Anyone wanting quiet practice; a cup mute stays audible
- Players needing straight-mute brightness or wah-wah effects
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Sized for bass trombone
Bass bells are larger than tenor. A tenor cup mute sits too deep or falls out on a bass horn.
Detail 03
Cork-mounted fit
Corks hold the mute in the bell. They compress over time and can be shimmed or replaced when the mute sits loose.
Detail 04
Jo-Ral B7 model number
Identifies the bass-specific cup in the line, so you can match parts and replacement corks correctly.
Final check
Know before you order
- 01Check your bell diameter — bass trombone bells vary and fit is not universal
- 02No case or bag included; mutes dent easily when loose in a gig bag
- 03Cup mutes push intonation; expect to adjust the slide while muted
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this work on my tenor trombone?
No. It is sized for bass trombone bells. On a tenor it will seat too deeply or not stay put, and the tone and pitch will be off.
02Is this quiet enough for apartment practice?
No. A cup mute is a tone-color mute, not a practice mute. It reduces volume somewhat but stays clearly audible.
03What is the difference between a cup and a straight mute?
A straight mute is bright and cutting. A cup mute covers the bell opening, rolling off highs for a darker, more distant sound.
04Does it change my tuning?
Yes. Mutes raise pitch and alter response. Plan to compensate with the slide, especially on low notes.
