AR Resonance Trombone Backbore AR 65 M

BACKBORES

Tenor Trombone: available in Small or Large Shank and with 6.0mm or 6.5mm throat 

• Small
• Medium
• Large

Symphonic Trombone: available with 7.2mm throat

• GR0 72: tightest, good for soloists or for hard pieces for first trombones
• GR1 72: for experienced first trombones
• GR2 72: for second trombones or players looking for a fuller sound in the low register
• GR3 72: for third trombones or players doubling on bass trombone

​Bass Trombone: availabler with 8.0mm throat

• GR0 80: for players who need to play in the high register from time to time 
• GR1 80: the all rounder 
• GR2 80: full deep sound
• GR3 80: for the biggest sound on the low notes

You can choose parameters like the length of the cylindrical part of the throat, the average internal taper, the wall thickness at the end of the shank and so on.

If you desire a bigger sound or a faster and cleaner articulation, you are always covered.

And always with the world renown intonation and consistency of sound throughout the entire range of the instrument.