Standing Wave Efficiency (SWE)
Imagine playing longer with less fatigue and higher with perfectly clean
attacks at any dynamic level. Because we integrate the principles of
physics into every design, Harrelson Trumpets are considerably more
efficient than other custom horns. Higher efficiency means you make more sound with less effort. From near trombone-dark to sizzling bright, the sound in your mind's ear is now an acoustic reality.
Take your playing to the next level today by upgrading the SWE factor of your equipment. Harrelson SWE Trim Kits are designed to improve the efficiency of any instrument,
regardless of the original design. This is a simple cost-effective way
to upgrade the performance of your current trumpet, cornet or flugel.
Harrelson SWE Mouthpieces also improve SWE by preserving energy at the source of the vibrating
surface (the lips) and transmitting more energy to the leadpipe and
trumpet. You will notice an immediate improvement in attacks at all
How Does SWE work?Standing Wave Efficiency
(SWE) Technology is a physics-based design method that preserves energy in
the sound wave as it travels through a tube or instrument.
In a traditional trumpet, energy in the standing wave is lost in the
form of vibration as it travels through the trumpet. The further the
wave travels, the more energy is lost. To make things more
complicated, the higher the note on the trumpet the greater number of
nodes and anti-nodes. These nodal points vibrate the tubing wall and
braces, robbing even more energy from the wave. And it doesn't stop
there! A common side-effect of nodal points involves. Excessive
Vibration Interference (EVI) between fixed points (trumpet braces)
separated by vibration-prone material (thin and/or stiff tubing).
EVI is present on all traditional trumpets especially along the leadpipe
and bell, which results in interference with the original sound wave.
The EVI effect becomes more noticeable in the upper register of any
brass instrument. This is due to the greater number of anti-nodes and
nearly proportional number of spans measuring EVI. Difficulty in the
upper registers of the trumpet is mostly due to the EVI
effect. Reduce the EVI with SWE technology and the upper registers
respond and sound much like the low and mid-registers.
High efficiency Harrelson Trumpets retain sound quality and character
throughout all four octaves by preserving energy in the sound wave. It
is possible to double and triple tongue 2 or more octaves almost
effortlessly on a Bravura and 2.5-3 octaves on the 909, Nouveau and
Satellite. Of course some practice is definitely involved!
SWE is much like improved fuel efficiency in a car. In the past 100
years, the efficiency of the automobile has improved considerably. The
very first vehicles had such low fuel efficiency and power that they
were considered oddities with no purpose. Vehicles of today
are hundreds of times more efficient exhibiting power, handling and
usefulness that is beyond their original inventors' comprehension.
Now imagine the evolution of the trumpet. There have been a few
innovative and practical improvements to the trumpet over the past 100
years, but efficiency has increased by very little in production
instruments. Harrelson trumpets are the most efficient trumpet designs
ever created. Like the automobile, better efficiency means more
power, range, endurance, playability, dynamics and sound.
SWE Reasearch & Development
Jason Harrelson has been researching and applying SWE technology since 1996 both in the lab and real world playing situations. Harrelson's SWE research and development has involved more than 200 unique trumpet
designs, hundreds of experiments with students and colleagues and
feedback from thousands of individual trumpet players around the globe.
Individual Consultations & Master ClassesJason Harrelson is an active musician and trumpet builder. His diverse
performance experience offers musicians valuable perspective throughout
the design and production process. He will consider your individual
concerns and playing preferences while offering solid advice on
technique and equipment solutions. Jason has dedicated his life to
improving the way you make music. Schedule an appointment or master class with Jason by contacting Paul or Jen @ 651.330.7774 or firstname.lastname@example.org
Last updated by Jason Harrelson Jan 4, 2011.