| Bell | Sound Characteristic | Best Suited For... | Positives | Negatives | Similar Bb Bell... |
| 239 | Big, Dark, Sound. Considered the "37" bell of for C and D trumpets. The so-called "Standard." | Classical | Standard, has a big sound that is big and, yes, "FAT" sounding! | None really...if this is the kind of sound you want you can't go wrong. For those who need a negative comment, it takes more endurance to play this then the 229. | 65 |
| 229 | Tighter and brighter sounding than the 239. Sound doesn't spread as much to the sides and the 239...the sound is more direct and focused. | Classical | Nice sound, really cuts through the orchrestra. | High range can sound pinched if you don't fill this bell up with air! | 43 |
| 256 | Less edgy than the 229 and 239 bell. | Classical |
The Selmer company claims that these bells help obtain "excellent intonation." This is not true!I have tried ones that have had great intonation, and ones that have had horrible intonation!! |
Not as bright as the 229 and 239, doesn't quite cut through an orchrestra like some others do... | 38 |
| 236 | More focused than the 229. Bright and it projects!! Standard for "D" trumpets. | Classical | It projects !!! | To bright for C trumpets, nice though for D's. | 25 |
| 238 | This bell is often used with a Vindabona bore. Sounds both big and dark. | Classical | If dark is what you want, this is even darker than the 239 | Doesn't project...tone can be airy in low register. | 72 |