YBL-421G
Intermediate Bass Trombone

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| Inner slide |
The chrome-plated, nickel-silver, drawn inner slide is very durable and has a quick, sensitive response. |
| Outer slide |
The one-piece, drawn, yellow brass outer slide maintains an accurate diameter throughout its length. This type of construction ensures airtightness, smooth action, and exceptional durability and offers improved response. |
| Inner slide stockings |
Specially designed, one-piece, inner slide stockings guarantee airtight slide construction, and offer smoother slide action and better alignment, even in the extended 6th and 7th positions. |
| Tubular braces |
Long-lasting, nickel-silver tubular braces contribute to the stability of the slide and enhance smooth slide action. |
| Pressure formed tubing |
Perfectly rounded tubing results in less turbulence and a smoother air flow, thus allowing for an excellent scale and reduced resistance. |
| Laser-fused pluzuma welded bell |
A high-energy laser fuses the brass together for a virtually seamless bell which allows continuous even vibrations. |
| Slide lock |
The unique slide lock design on all Yamaha trombones keeps the slide locked in place and keeps it from accidentally falling. |
| Bracing |
The large, easy-to-hold, nickel-silver bracing guards against possible slide damage if the instrument is dropped and also lessens fatigue while playing. |
| Mouthpipe |
Yamaha trombones have mouthpipes featuring special acoustic designs allowing for precise intonation and greater blowing control. |
| Semi-open wrap |
The YBL-421G features a semi-open wrap that allows for an open sound and smooth air flow. |
| Specifications | |
| Level | Intermediate Bass |
| Key | Bb / F |
| Bore | LL: 0.563" |
| Bell Diameter | 9 1/2" |
| Shank | Large |
| Leadpipe | Gold brass; Fixed |
| Body Material | Yellow brass |
| Bell Material | Gold brass; Pluzuma welded |
| Weight | Standard |
| Finish | Clear lacquer |
| Inner Slide | Chrome-plated nickel silver; Drawn |
| Outer slide | Brass; Drawn; One-piece |
| Mouthpiece | 58 |
| Features | F-attachment |
| Pistons/Rotors | Single rotor; Hand lapped; Mechanical linkage |
| Options | N/A |
| Included: | |
| YAC BL58 | Bass trombone mouthpiece; aids clear articulation and resonance in middle and low registers |
| YAC BLC-320 | Wood trombone case; fits YBL-421G |
| YAC 1020P | Trombone slide cream |
| Optional: | |
| YAC BL59 | Bass trombone mouthpiece; standard bass trombone mouthpiece for full-bodied sound |
| YAC BL59-GPR | Bass trombone mouthpiece; gold-plated rim through backbore; standard bass trombone mouthpiece for full-bodied sound |
| YAC BL60 | Bass trombone mouthpiece; large-scale design for powerful playing by advanced bass trombonists |
| YAC BL60B | Bass trombone mouthpiece; broad rim and shallow cup for flexibility in all registers and especially good response in low range |
| YAC YEO | Bass trombone mouthpiece; signature series; rich-sounding mouthpiece for the advanced player |
| YAC 1351 | Vinyl mouthpiece pouch; fits all low brass mouthpieces |
| YAC 1505G | Trombone lyre; gold lacquer |
| YAC 1505N | Trombone lyre; nickel-plated |
| YAC KB510 | Trombone stand |
| YAC MU-SL14S | Trombone mute; straight; aluminum |
| YAC MU-SL16S | Trombone mute; aluminum with copper base |
| YAC 080000 | Yellow rotor string; 2 meters |
| YAC 1002P | Rotor oil |
| YAC 1021P | Trombone slide oil |
| YAC 1011P | Slide grease |
| YAC 1012P | Premium rotor oil |
| YAC 1013P | Rotor spindle oil |
| YAC 1014P | Lever oil |
| YAC 1060 | Lacquer polish |
| YAC 1078P | Vinyl coated flexible cleaning rod; large |
| YAC 1084P | Brass mouthpiece brush |
| YAC 1090P | Untreated polish cloth; large |
| YAC 1100 | Chamois-like polishing cloth |
| YAC 1665P | Trombone cleaning rod |
| YAC 1670P | Spray bottle |
| YAC 1035P | Maintenance kit; trombone; slide cream |
| YAC 1036P | Maintenance kit; trombone; liquid cream |
| YAC EV-21 | Don Knaub, "Steps to Excellence"; trombone |
| SB59C | Trombone Silent Brass system |
| PM-5 | Silent Brass mute only |
| Model: | YBL-421G |
| Years: | 1995- |
| Key: | Bb-F |
| Bore: | .563" |
| Bell Size: | 9.5" |
| Current Model: | Current |
