Selected: Clarinet

Bore restoration
Restores the sound of a new instrument

Centers the sound and focus, restoring the resistance and warmth like on a new instrument

Lowers the sharp pitch and restores resistance on open sound problem of old instruments


1. The phenomenon: Clarinets change their sound, pitch and resistance as they get older, also known as becoming “blown out”. This is because the instrument has been swabbed out thousands of times throughout its years. The thicker the swab being used, the faster this effect is noticed. After approximately 6-8 years you will notice that the instrument´s general pitch rises. A longer barrel will help to compensate for it, but tends to mostly affect the left hand notes. The sound also becomes brighter and more open. Most players then search for a new mouthpiece usually one with a smaller opening which requires harder reeds. The reason for this is that the bore slowly increases, causing the pitch to rise and reduces the resistance. By switching to a more closed mouthpiece, the resistance and control is moved from the instrument to the mouthpiece.

2. The best solution is the L&P bore replacement. We will insert a sleeve that replicates the original bore as closely as possible. Over the years we collected data from the clarinets we worked on, and created a huge database. This allowed us to restore the bore back to its original shape.

3.The Advantages are significant.

This procedure can be redone as often as you like on the same instrument.

You can keep the same focused and controlled sound as well as feel as long as you keep the instrument.

Your A and Bb can keep the same “new” feeling and you can use the same mouthpiece for both.

This procedure is much cheaper than buying a new instrument.

This also protects the limited wood resources available. Since 2017 Mpingo, also known as grenadilla wood, has been listed as endangered and needs to be protected. Even with increased awareness of this issue and environmental efforts to plant more trees, it will still take at least 80 years to increase the amount of granadilla wood available. It takes at least 80 years for a tree to grow and mature before it can be harvested.

(C) 2014 - by Lohff & Pfeiffer - Brøndbyvej 211 - 2625 Vallensbæk + 45 3535 8643 - SE DK 189 57 485