Bach 6.5AM

TromboneIn Production

Precision Specifications

RIM DIAMETER25.4 mm

CUP DEPTHMedium Deep

THROAT ∅6.53 mm

BACKBORE#413

SHANKsmall

CUP SHAPEbowl

Rim Widthmedium-wide

Rim Contourrounded

Throat Drill #—

Materialbrass

Finishsilver-plate

Weightstandard

Recommended For

Orchestral

About This Mouthpiece

The Bach 6.5AM is a medium-deep-cup tenor trombone mouthpiece featuring a 25.4mm rim diameter and 6.53mm throat. It has a #413 backbore, small shank. Well-suited for orchestral playing.

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Decode the Bach number–letter naming system, cup depth spectrum, and Big Three models.

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Rate This Piece — 8 Dimensions

Physical Feel

Resistance— Back-pressure & support

1 — Free-blowingRestrictive — 10

Rim Comfort— How kind is it on your chops?

1 — UncomfortableVery comfortable — 10

Rim Bite— Sharpness of the rim edge

1 — Very round / forgivingVery sharp / precise — 10

Tonal Character

Brightness— Overall spectral colour

1 — Dark & warmBright & piercing — 10

Tone Focus— Core vs. spread sound

1 — Spread / diffuseCentred / laser — 10

Playability

Articulation— Clarity & crispness of attack

1 — Blurry / sluggishCrisp & immediate — 10

Flexibility— Ease of slurs & pitch bending

1 — Rigid / stiffFluid & flexible — 10

Stamina

Endurance— How long before fatigue sets in?

1 — Tires quicklyPlays all night — 10

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