Description *Please note: the Yamaha 835D does NOT come with a case – Marcus Bonna detached bell cases are available to purchase separately. The YBL-835 has evolved to deliver the power and performance that modern music demands. It has an open playing feel and produces rich, authoritative tone that responds ideally to player control. Furthermore, this instrument is also the first Yamaha custom bass trombone to feature a detachable hand rest for significantly improved operation. The YBL-835 series has been refined to deliver world-class tone and playability in performance situations ranging from solo to orchestral. Slide Receiver Previous models included an internal protrusion in the slide receiver that was designed to provide optimum playing resistance and consistent tone. The YBL-835 does away with this design element, making it possible to deliver higher volume, powerful sound, and generally enhanced playing response. Mouthpiece Receiver The depth at which the mouthpiece fits into the receiver has been reduced slightly, giving the mouthpiece more freedom to resonate. The result is a more flexible playing feel and easier control. Rotor Shape The rotary valve port shape has been modified to increase the volume of the valve tube, allowing greater breath flow for more powerful sound. Lever Action The lever action has been upgraded with a shorter stroke that affords improved operability. Other refinements include a double torsion spring that contributes to consistent lever operation, and double ball bearings that reduce the need for maintenance and make maintenance easy when it does become necessary. The shape of the first lever cover has been changed to better fit the player’s hand, and the angle of the second lever finger plate is adjustable to precisely match the player’s hand size. Fine adjustability means optimum operability for any player. Detachable Hand Rest The first detachable hand rest ever to be provided in a custom bass trombone significantly reduces strain on the player’s hand fingers. This allows a steadier hold on the instrument, so the player can concentrate more fully on the music. The hand rest is attached in a location where it has minimum effect on the instrument’s tone, but it can be easily detached and removed from the instrument entirely by using the supplied hex wrench. Detachable Bell (YBL-835D, YBL-835GD) Not only does a detachable bell allow more compact storage, but the added weight of the bell screw section helps to produce a tighter sound with improved directionality. Specifications Specifications YBL-835 YBL-835G YBL-835S YBL-835D YBL-835GD Key Bb/F/Gb/D Bb/F/Gb/D Bb/F/Gb/D Bb/F/Gb/D Bb/F/Gb/D Bell Material Yellow brass Gold brass Yellow brass Yellow brass Gold brass Bell Diameter 241mm (9 1/2″) 241mm (9 1/2″) 241mm (9 1/2″) 241mm (9 1/2″) 241mm (9 1/2″) Bore Size LL: 14.3mm (0.563″) LL: 14.3mm (0.563″) LL: 14.3mm (0.563″) LL: 14.3mm (0.563″) LL: 14.3mm (0.563″) Outer Slide Material Yellow brass Yellow brass Yellow brass Yellow brass Yellow brass Inner Slide Material Nickel silver Nickel silver Nickel silver Nickel silver Nickel silver Finish Clear lacquer Clear lacquer Silver-plated Clear lacquer Clear lacquer Mouthpiece BL-61D4L BL-61D4L BL-61D4L BL-61D4L BL-61D4L Case Included Included Included Not Included Not Included
