Jerome Callet Trumpets       





Ask Kyle ~

I will continue to expand this page as your questions come in. Email me anytime:

Questions & Answers


What is the correct pronunciation for 'Callet'?

The correct pronunciation has a hard T at the end. It rhymes with pallet and mallet.

What is the correct pronunciation for 'SIMA'?

The correct pronunciation is Sih' - ma.

Are the NY Soloist and SIMA step-bore designs?

The NY Soloist and Sima are NOT step bores. There is general agreement that the best step bore ever was Jerry's Jazz trumpet along with its last update, the Stratosphere. But as Jerry points out, step bores, by their very nature, distort the focus and core of the sound. This is heard in the intonation especially during changes in register. Jerry's goal with his two newer horns was to maintain or improve the ease and response of the step bore while eliminating the drawbacks in sound. As a former owner of several Jazz and a Stratosphere, I'm certain he reached his goal and quite a bit more. As so many current NY Soloist and Sima owners moved up from the Jazz, I know the feeling is shared by many others.

Who makes the current Callet trumpets and flugelhorn?

Every NY Soloist, Sima, and Grand Prix is made entirely by hand by Kanstul in Anaheim, California. However, the design features are 100% exclusive to Jerome Callet Trumpets. They are not shared by any horn in the Kanstul line. Jerry has worked very closely with Kanstul for more than 30 years. In his experience, the construction quality of our current horns surpasses everything he has seen before. After thoroughly testing hundreds of  these new models, I can report the same. The hand hammered bells are exactly true to Jerry's design. The slides and valves are consistently true and smooth. For maximum compression and longevity, valves are very precisely machined and benefit from a few weeks of break-in before achieving maximum speed and smoothness. The finish work, both in silver plate and clear lacquer, show the pride of Kanstul's highly skilled craftsmen.

What is the bore on a SIMA?

The leadpipe is straight .453 throughout. And, the slide at the second valve is also .453. The rest of the very special design is locked in Jerry's noggin, but I'll have the blueprints in the future so the design will never be lost.

What is the bore on a NY Soloist?

The leadpipe is straight .460 throughout. And, the slide at the second valve is also .460.

What is the bore on a Grand Prix flugelhorn?

The leadpipe is straight .415 throughout. And, the slide at the second valve is also .415.

Can I special order traditional water keys?

Before finalizing his designs, Jerry tested countless bracings, slide nib combinations, water keys, etc. The final version is the design that gives the best sound. Therefore, Jerry is not permitting changes, not even to the little bits and pieces. Customizing is nice, of course, but Jerry is intent on guarantying that every Jerome Callet trumpet and flugelhorn sounds as great as possible.

Can I special order a Callet trumpet with a 1st valve tuning hook?

After countless experiments, Jerry determined that the function of the 1st slide tuning hook was to correct intonation problems caused by the 1st valve tuning hook. For that reason, Jerry is not offering the hook on his Bb trumpets. However, we do offer an optional 1st valve tuning hook on our NY Soloist C trumpet. This addition was encouraged by our friends in the Philadelphia Orchestra who feel the extra tool provides a little more confidence to meet the  extreme demands of of a top five orchestra. 

Why is the 3rd slide tuning ring "upside down"?

Jerry was encouraged by a long time craftsman from French Besson to experiment with the design. It was believed that the design was an essential feature of the legendary sound of the pre-war Bessons. As Jerry tested it, he found that the improvements in slotting and intonation were audibly significant. The design was added as a running change to Jerry's Jazz and Stratosphere trumpets and even offered as an upgrade to his previous trumpets. It takes just a couple of days to get used to this new "old" design. Start with index finger above and three fingers below, middle finger in the ring. Experiment from there to find your best feel. Four fingers below with index finger in the ring is also a good combination. But keep in mind, the tuning on a current Jerome Callet trumpet  is so spot-on that the 3rd valve slide is only included in order to give you a low F. The low D is already nicely in tune and the low C# requires you to play down on the pitch just a little bit. Your lips and ear will accomplish this much faster, smoother, and more accurately than a slide ever can.

Can I change the 3rd slide to top side tuning hook ring?

You canít change the slide by simply changing the placement of the hook because the upper male end is reversed and wonít  match up. The horn would have to be rebuilt. And as that affects the sound negatively, Jerry wonít build a NY Soloist or Sima that way. In our experience, it only takes a few days to get comfortable with the inverted position and most find it more comfortable as well as easier to access. Most importantly, current Jerome Callet trumpets are so wonderfully in tune that you shouldnít need a slide adjustment for pitch. Even for the low C# only a slight lip/tongue adjustment by ear is needed. Like the most coveted  trumpets of old, the slide is only intended to give you a low F when needed.

Will I feel back pressure with the medium bore SIMA?

There is back pressure only if you noticeably overblow. The Sima responds best when you let it do the work. The blow is so smooth and centered that the best combination is actually with the 29 throat of a Callet SC "Superchops" mouthpiece. Several Las Vegas lead players using the Sima encouraged Jerry to make his SC2 mouthpiece with the 29 throat (now called SC3) and it really worked! Interestingly, Jerry tried 29 throats many times in the past. But he never found a combination that worked - until the Sima. Of course, players that would like a bit more open blow should move to the .460 NY Soloist. Response with the NY Soloist is nearly as quick. And unlike other .460 and larger horns, the NY Soloist won't suck your endurance down the tubes.

What is the gap on a Jerome Callet trumpet?

I've measured the leadpipe depth on my personal Sima at 29.52mm and 29.42mm on my personal NY Soloist. My Callet SC4 and SC6 mouthpieces both insert 22.4mm. I installed a Harrelson spacer to decrease my gap on both horns to 1 millimeter. This provided a small, though still helpful improvement in articulation and center of pitch.

What is the weight of a Sima or NY Soloist trumpet ?

The NY Soloist and Sima are medium weight horns. The bell is thicker than average but the valve section is a little lighter than normal. Actual weight in Bb is 2.34 pounds or 1.06 kilograms. Due to the wonderful front-to-back balance, these trumpets feel even lighter in the hands than the actual weight would suggest.

Can I get a Callet horn in gold plate?

Yes, gold plate is an available option as any of our horns, any key. Due to volatility of the price of gold, actual price can vary. Upgrade cost for any trumpet is $150 above the price of 1 ounce of gold as set by MONEX at day of order. Allow apx 4 weeks for shipping. Upgrade for a Callet flugelhorn is $200 above 1 ounce of gold.

How do the NY Soloist and SIMA compare to an original Callet Soloist from the 1980's?

I've been pleased to learn of the large and extremely loyal following the Callet Soloist commands even though it's now a 25 year old design. Nearly all the Soloists were a straight .470 and many players strongly feel it is the best extra large bore horn ever made. Without doubt, it's a powerful, full, and lush sounding trumpet. And, it avoids much of the excess spread and weak core that plague other large and extra large bore horns. But after many head-to-head comparisons, the NY Soloist and SIMA are actually even more powerful than the 1980's Soloist! You have to lay back on these new, improved designs rather than attack them like a Soloist. Then, the center and focus of the NY Soloist and SIMA truly take over. The result is greater projection with much more endurance and improved intonation combined with a stunning richness of sound that only the newer designs offer..

Should I use heavy bottom caps?

Our initial findings - gosh no. In our testing, it's much better to settle into the perfectly centered blow of the NY Soloist and Sima. This provides the best long term results. Then again, it is your horn. So, if you are an advanced player that has fully settled into the blow with standard caps then experimented with heavy caps. I will be pleased to hear your findings and pass them onto others.

Should I have a precision valve alignment done?

Jerry does not recommend it. First, the precision and consistency of  our current models has been excellent. So, Jerry has found that additional alignment is not needed. Second, Jerry has found that secondary alignments can upset the original balance - some horns played as well, but others played noticeably worse. And Jerry has not found any that played better. Nonetheless, if you decide to have an aftermarket valve alignment I would be pleased to hear your findings.


For further discussion please contact me directly:


Callet Warranty ~

Callet Trumpets, LLC warrants its brasswind instruments to be free from defects in materials and workmanship for a period of one (1) year from original date of purchase. Warranty is valid for the original purchaser only.


This warranty does not cover damage caused by abuse, neglect, misuse, tampering, accident or normal wear and tear.

Finishes are guaranteed to be applied properly, using the very finest protective materials and techniques. Discoloration or peeling caused by damage, perspiration, corrosive atmosphere and other external sources are not covered under this warranty.

Defects caused by soldering acid bleeds or failure of the finish to adhere to the instrument surface are covered during the 1-year warranty period only.

Callet Trumpets and Kanstul Musical Instruments will be the sole judges as to cause of damage or defects. The repair of an instrument shall constitute in full of all claims of the buyer for damages and shall operate as a release of all claims for damages of both the buyer and Callet Trumpets/Kanstul Musical Instruments arising out of the warranty.

This warranty gives (you) specific legal rights and you may also have other rights which vary from state to state.


Authorized repairs must be made by Callet Trumpets in conjunction with Kanstul Musical Instruments. When necessary to return an instrument you must first contact our customer service department at Pictures and description of the possible warranty issue should be included. Shipping and insurance charges for instruments requiring warranty services are to be paid by the owner.