Jupiter XO 1236L-T Trombone Overview
The Jupiter XO 1236L-T is a professional .547 bore symphonic tenor trombone featuring a Thayer axial flow valve designed to keep the trigger register exceptionally open and responsive. Jupiter’s XO line has become a serious option for advancing and professional trombonists who want a dark, centered tonal color, secure response, and modern valve feel at a practical price point. This instrument was a display model and is being offered as an open-box purchase from an authorized Jupiter dealer.
Jupiter XO 1236L-T Trombone Specifications
- Instrument type: Tenor trombone with F-attachment
- Bore: .547
- Valve: Thayer axial flow (open wrap)
- Key: Bb/F
- Finish: Lacquer
- Leadpipe: 3 interchangable leadpipes
- Bell size: 8.5 Inches
- Case: Original
- Accessories: 6.5AL Mouthpiece, Rotor Oil, Slide Cream, Polish cloth
- Serial number: EB11935
Condition & Setup
Condition is open box (display model). The instrument shows no signs of use and presents in like-new cosmetic condition. Prior to shipping, it will be professionally serviced, set up, and play-tested to confirm proper slide action, valve alignment and function, and overall playing performance.
Who the 1236L-T Trombone Is For
The Jupiter XO 1236L-T is a professional symphonic tenor trombone built for orchestral, wind ensemble, and demanding commercial section work where a broad sound and a free-blowing trigger register are priorities. Its .547 bore and Thayer axial flow valve support a dark tonal character with quick response, and the valve design is specifically chosen to reduce resistance when the F-attachment is engaged. For players comparing professional F-attachment trombones, the 1236L-T stands out for its open feel through the valve and its strong performance-to-cost value in the pro category.
Common Questions About The Jupiter XO 1236L-T
What does the Thayer valve change compared to a rotary valve?
A Thayer axial flow valve is designed to keep the air path straighter and more open than many traditional rotary designs, which typically makes the trigger register feel less resistant and closer to the open horn.
Is the Jupiter XO 1236L-T suitable for professional use?
Yes. The XO series is Jupiter’s professional line, and the 1236L-T is built as a .547 bore symphonic tenor trombone with F-attachment intended for advanced conservatory study, audition prep, and professional ensemble playing.
What does open box mean for this instrument?
Open box means it was a display model rather than a regularly used instrument. It shows no signs of use and will be inspected, set up, and play-tested before it ships.
We are proud to be an authorized Jupiter XO dealer
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
Jupiter XO Model 1236L-T Tenor Trombone with Thayer Valve
Jupiter XO 1236L-T Trombone Overview
The Jupiter XO 1236L-T is a professional .547 bore symphonic tenor trombone featuring a Thayer axial flow valve designed to keep the trigger register exceptionally open and responsive. Jupiter’s XO line has become a serious option for advancing and professional trombonists who want a dark, centered tonal color, secure response, and modern valve feel at a practical price point. This instrument was a display model and is being offered as an open-box purchase from an authorized Jupiter dealer.
Jupiter XO 1236L-T Trombone Specifications
- Instrument type: Tenor trombone with F-attachment
- Bore: .547
- Valve: Thayer axial flow (open wrap)
- Key: Bb/F
- Finish: Lacquer
- Leadpipe: 3 interchangable leadpipes
- Bell size: 8.5 Inches
- Case: Original
- Accessories: 6.5AL Mouthpiece, Rotor Oil, Slide Cream, Polish cloth
- Serial number: EB11935
Condition & Setup
Condition is open box (display model). The instrument shows no signs of use and presents in like-new cosmetic condition. Prior to shipping, it will be professionally serviced, set up, and play-tested to confirm proper slide action, valve alignment and function, and overall playing performance.
Who the 1236L-T Trombone Is For
The Jupiter XO 1236L-T is a professional symphonic tenor trombone built for orchestral, wind ensemble, and demanding commercial section work where a broad sound and a free-blowing trigger register are priorities. Its .547 bore and Thayer axial flow valve support a dark tonal character with quick response, and the valve design is specifically chosen to reduce resistance when the F-attachment is engaged. For players comparing professional F-attachment trombones, the 1236L-T stands out for its open feel through the valve and its strong performance-to-cost value in the pro category.
Common Questions About The Jupiter XO 1236L-T
What does the Thayer valve change compared to a rotary valve?
A Thayer axial flow valve is designed to keep the air path straighter and more open than many traditional rotary designs, which typically makes the trigger register feel less resistant and closer to the open horn.
Is the Jupiter XO 1236L-T suitable for professional use?
Yes. The XO series is Jupiter’s professional line, and the 1236L-T is built as a .547 bore symphonic tenor trombone with F-attachment intended for advanced conservatory study, audition prep, and professional ensemble playing.
What does open box mean for this instrument?
Open box means it was a display model rather than a regularly used instrument. It shows no signs of use and will be inspected, set up, and play-tested before it ships.
We are proud to be an authorized Jupiter XO dealer
Pairs well with
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
Jupiter XO Model 1236L-T Tenor Trombone with Thayer Valve
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Orders valued over $99 ship via FedEx 2-Day within the U.S. and via DHL internationally. A physical address (no P.O. Boxes) and signature are required. Smaller accessories ship via USPS (2–5 day service) and do not require a signature if valued under $99. Please see our FAQ for additional details.
-
Return Policy
We offer an unconditional 30-day return policy to ensure you’re completely satisfied. If you’re unhappy for any reason, return the item for a full refund or full exchange credit (reeds and other consumables are non-returnable once opened). Every instrument we sell is guaranteed to be free of mechanical defects—if an issue arises, contact us and we’ll either reimburse a local repair or provide a prepaid return label for repair, exchange, or refund. If you simply change your mind, you may still return the item for a full refund, but return shipping costs are the customer’s responsibility unless free returns were purchased through Redo at checkout. Please see our FAQ for additional details.
-
Shop Warranty:
Brand new items are covered by the full manufacturer’s warranty unless otherwise noted (see the individual maker for details). Open box, used, and vintage items include a two-year warranty serviced by our in-house repair shop, and we guarantee every instrument will be free of mechanical defects. Warranty coverage does not include damage from accident, misuse, negligence, improper operation, unauthorized alterations or removed serial numbers, normal wear and routine maintenance, environmental damage (including perspiration, corrosion, or extreme temperature and humidity), lacquer or plating wear, or consumable parts such as springs, pads, and felts. Please see our FAQ for additional details.