Jupiter XO Model 1236RL-O Professional F-Attachment Tenor Trombone SN FB03510

Jupiter XO 1236RL-O Professional F-Attachment Trombone Overview

The Jupiter XO 1236RL-O is a Bb/F large-bore tenor trombone with an open-wrap F-attachment and three interchangeable leadpipes, designed to deliver a dark tone color with quick, confident response. It offers an open-feeling trigger register for smooth low-range access and consistent articulation across the horn. For players comparing professional-feature sets at a practical cost, the 1236RL-O is built to cover orchestral, wind ensemble, and commercial work without requiring a specialty setup.

Jupiter XO 1236RL-O Professional F-Attachment Trombone Specifications

• Key: Bb/F
• Bore: .547 inch primary bore with .563 inch F-attachment bore
• Bell: 8.5 inch hand crafted bell
• Bell material: Rose brass
• Material: Yellow brass
• Leadpipe: Three interchangeable leadpipes
• F-attachment: Open wrap with standard rotary valve
• Finish: Lacquer
• Case: Original case included
• Accessories: Original accessories included, including slide cream and 6.5AL mouthpiece

Condition & Setup

Open box model in superb condition. We purchased this instrument directly from the manufacturer and it has seen only extremely light use as a demo or display model. Our shop has serviced, set up, and play-tested the trombone to confirm slide function, valve operation, and overall playing condition.

Who the 1236RL-O Professional F-Attachment Trombone Is For

The Jupiter XO 1236RL-O is a professional Bb/F tenor trombone designed for players who need a large-bore symphonic-style instrument with an open-wrap trigger for extended low range. Its core sound leans dark and centered, and the response is designed to feel immediate without requiring excessive effort, particularly through the F-attachment register.

This model is a strong fit for advancing students, conservatory players, and working professionals who want a versatile large-bore trombone for orchestra, wind ensemble, chamber brass, and doubling situations. The interchangeable leadpipes make it easier to tailor articulation and resistance to your preferred mouthpiece and playing concept, while the open-wrap design supports a more open blow in the trigger range.

Common Questions About The Jupiter XO 1236RL-O

Is the Jupiter XO 1236RL-O a large-bore trombone?

Yes. It has a .547 inch primary bore with a .563 inch bore through the F-attachment, which is the standard large-bore format used for many symphonic and wind-ensemble tenor trombones.

What does open-wrap F-attachment mean for feel and response?

Open wrap refers to a more direct tubing layout for the F-attachment. In practical terms, it typically provides a more open-feeling airflow in the trigger register and helps keep response consistent when moving between Bb and F-attachment positions.

What comes with this trombone?

It includes the original case and original accessories, including slide cream and a 6.5AL mouthpiece.

We are proud to be an authorized Jupiter XO dealer

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We want you to be happy and satisfied with your purchase, and we offer an unconditional 30 day return policy. If you are unhappy with your item for any reason, just return it for a full refund or full credit towards an exchange. (Reeds and other consumables are non-returnable once opened.)

We warranty every item we sell to be free of mechanical defects. If you find an issue with your purchase, please contact us. We will either reimburse you to have any minor repairs completed by your local repair shop, or we will send you a label to cover all return postage charges so that we can either repair your instrument, exchange your instrument, or issue you a refund for your instrument. We stand behind our products, and we truly want you to be happy.

Please note that if you simply change your mind about the purchase of an item - if you find that it's just not the one for you - you are still entitled to a full refund. We do not routinely charge a restocking fee; however, you will be responsible for the expense involved in shipping the item back to us if you have not purchased free returns through Redo at checkout. (Redo is available for domestic sales in the US only - international customers will be responsible for return shipping). Upon receipt of your return, our technicians will go over the instrument to ensure everything is in the same condition in which it was sold. Damage to the instrument, missing accessories, or unauthorized alterations/repairs may affect your refund. Your refund will be processed within 5 business days of our receipt of your return.

If more than five returns are requested within a calendar year, a 20% restocking fee will be assessed for every return moving forward for that calendar year.

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