experimental "x" series

Harrelson Trumpets
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"X" Series

Our new X-series trumpets give you the opportunity to own truly innovative instruments that are sure to become very collectible.

Built with the same high quality components as our VPS Summit and Muse series, each X-horn is a true prototype designed to test a new idea, design or material. Jason build a total of 100 "X" Series trumpets, which will be featured in a full color photo book complete with descriptions, build photos and details on each design. In addition, our YouTube channel will be featuring many of these horns as they are being designed and built. Own a unique piece of history that rivals the best trumpets of yesterday and today.

x1 - breakdown

"Breakdown" X1 is an experiment in modular bell efficiency. Designed with a removable bell, this horn explores the possibility of breaking a horn down to fit into a smaller travel-friendly case. Our new Muse and HT6ve series trumpets will soon feature removable bell and leadpipe systems and X1 answers questions related to efficiency and resonance for the HT6 series coming next year.

Leadpipe 1 ( venturi .341)
Removable Bell 1
July ​2018 Build Date
5/8" taper fixed receiver
Custom Finger Buttons - Stars
Saturn Water Keys
1/4" SWE Bottom Caps
Acoustic Armour finish in matte Black & Gold
Made in Denver, USA
Matching 5MM Modular Mouthpiece available

sold

x2 - double inversion

"Double Inversion" X2 is an experiment in wrapping tubing to physically change how and where we hear the sound project from the entire instrument and bell. Designed with a downstream leadpipe, this horn answers questions related to hand and embouchure position as well as how individuals react to anti-nodal vibration as it relates to the location of various tubing bends.

Leadpipe: 14 (medium large)
Bell: 1
​July 2018 Build Date
9/16" taper fixed receiver
Solid brass lightweight finger buttons
Saturn Water Keys
1/4" SWE Bottom Caps
Laser welded couplers
Acoustic Armour finish in matte Gold
Made in Denver, USA
Matching 5MM Modular Mouthpiece available


sold

 x3 - Lead

Leadpipe 3 (2017 version) - see chart
Bell 1 - see chart

​Reverse Round tuning slide

August 2018 Build Date
VGR Receiver in 5/8" - removable venturi gap receiver system
Set of 9 VGR Inserts included to adjust flexibility, slotting, air flow & resonance (more options available)
Solid Brass Finger Buttons
1/2" SWE Recessed Top Caps
1/2" SWE Bottom Caps
3rd Slide Screw Stop
Saturn Water Keys
Brushed Raw Brass finish (not lacquer)
Case and Mouthpiece not included
Made in Denver, USA
Matching 5MM Modular Mouthpiece sold separately

sold

X4 - compact piccolo

Button Text

 x5 - lead


Leadpipe 3 (2017 version) - see chart
Bell 1LT - see chart
​Reverse semi-round tuning slide
September 2018 Build Date
VGR Receiver in 5/8" - removable venturi gap receiver system
Set of 9 VGR Inserts included to adjust flexibility, slotting, air flow & resonance (more options available)
Solid Brass Finger Buttons
3/8" SWE Recessed Top Caps
1/4" SWE Bottom Caps
3rd Slide Screw Stop
Saturn Water Keys
Brushed Raw Brass finish (not lacquer)
Case and Mouthpiece not included
Made in Denver, USA
Matching 5MM Modular Mouthpiece sold separately

sold

x6 - lead

Leadpipe 3 (2017 version) - see chart
Bell 1LT - see chart
Standard semi-round tuning slide
September 2018 Build Date
VGR Receiver in 5/8" - removable venturi gap receiver system
Set of 9 VGR Inserts included to adjust flexibility, slotting, air flow & resonance (more options available)
Solid Brass Finger Buttons
3/8" SWE Recessed Top Caps
1/4" SWE Bottom Caps
3rd Slide Screw Stop
Saturn Water Keys
Brushed Raw Brass finish (not lacquer)
Case and Mouthpiece not included
Made in Denver, USA
Matching 5MM Modular Mouthpiece sold separately

sold

 X7 - lead

Leadpipe 3 (2017 version) - see chart
Bell 1LT - see chart
Standard semi-round tuning slide
September 2018 Build Date
VGR Receiver in 5/8" - removable venturi gap receiver system
Set of 9 VGR Inserts included to adjust flexibility, slotting, air flow & resonance (more options available)
Solid Brass Finger Buttons
3/8" SWE Recessed Top Caps
1/4" SWE Bottom Caps
3rd Slide Screw Stop
Saturn Water Keys
Brushed Raw Brass finish (not lacquer)
Case and Mouthpiece not included
Made in Denver, USA
Matching 5MM Modular Mouthpiece sold separately


x8

Perfect for all-around, band, quintet, commercial, lead and section playing. This trumpet will easily blend with Bach, Yamaha and other horns. The "X8" is an experiment in standard round tuning slide design built with a lightweight bell that exhibits more resonance in Silver/Gold Acoustic Armour.
VPS Leadpipe 3 (2017 version) - adjustable slotting, flexibility, air flow, resonance
Variable Performance System
Bell 1LT - see chart
Standard round tuning slide
September 2018 Build Date
VGR Receiver in 5/8" - removable venturi gap receiver system
Set of 9 VGR Inserts included to adjust flexibility, slotting, air flow & resonance (more options available)
Solid Brass Finger Buttons
1/2" SWE Recessed Top Caps
3/8" SWE Bottom Caps
3rd Slide Screw Stop
Saturn Water Keys
Silver and Gold Acoustic Armour
Made in Denver, USA
Matching 5MM Modular Mouthpiece sold separately

sold

x9

VPS Leadpipe 3 (2017 version) - adjustable slotting, flexibility, air flow, resonance
Variable Performance System
Bell 1LT - see chart
Standard round tuning slide
September 2018 Build Date
VGR Receiver in 5/8" - removable venturi gap receiver system
Set of 9 VGR Inserts included to adjust flexibility, slotting, air flow & resonance (more options available)
Solid Brass Finger Buttons
1/2" SWE Recessed Top Caps
3/8" SWE Bottom Caps
3rd Slide Screw Stop
Saturn Water Keys
Silver and Gold Acoustic Armour
Made in Denver, USA
Matching 5MM Modular Mouthpiece sold separately
  • Performance
    • Build My Mouthpiece >
      • Intro to Mouthpieces
      • Artist Series >
        • Artist Bodies
        • Artist Rims
      • Mouthpiece Components >
        • Rim Sizes
        • Cup Sizes
        • Throat Sizes
        • Body Sizes
        • Backbore Sizes
        • Nut Sizes
    • Increase Efficiency >
      • Mod Kits
      • Finger Button Options
    • Adjustable Performance
    • Adjustable Peformance Tools
  • Advantage
    • The Harrelson Story
    • We have Your size
    • Technology
    • Trumpet Momentum
    • 100% Guarantee
  • Instruments
    • 2019 VPS Summit G-Series
    • 2019 Muse Modular A-Series
    • "X" Series
    • Limited Editions >
      • Summit One
      • Summit Midnight
      • Summit Art
    • Bravura Series >
      • 2019 Bravura Flugelhorn
      • 2019 Bravura Piccolo
    • 2018 VPS Summit Series
    • HT6 - Kickstarter 2020
    • VPS Summit Eb
    • Acoustic Armour
    • Trumpet Gallery
  • News
    • Weekly Trumpet Challenge
    • Get Social
    • Clinics & Tours
    • Our Clients >
      • Client Features
    • Jason's Blog >
      • Jason Harrelson
    • Jen's Blog
    • Company History
  • Clients
    • 5MM Feedback Form
    • Order My Trumpet >
      • Leadpipes & Bells
      • Tuning Slides & Bell Crooks
      • Receivers
      • Bottom Cap options
      • Water Keys
    • Contact Us
    • Shipping
    • Instrument Registry
    • Acclimation
    • Maintenance
    • Roots of Music
  • Store