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FAQ - Frequently Asked Questions

Below you will find answers to frequently asked questions.

If you have any further questions, please contact us by telephone or the contact form.

Contrabass in F - advices regarding block and cork

  • How can I adjust the block in its height?
  • What can I do if the cork is too tight?

(PDF Datei 290 KB) Contrabass in F - some advices regarding block and cork

How do the different types of wood sound?

Please read some thoughts from Geri Bollinger:

The sound of different woods PDF-file (12 KB)

Keyworks - some advices

Please read the information about key and repairs:

Keys PDF-file (45 KB)

Hoarse sound - what are the reasons?

Hoarse sound

How can a hoarse sound be avoided?

Hoarse sound - occurs when water-drops get trapped in the wind-channel.


  • pre-warm the mouthpiece to body temperature (prevents cold condensation)
  • Anticondens Sprinkle the air exit opening (1) with Anticondens, especially in the corners. With the palm of your hand, hold closed the opening of the underneath of the headpiece (2) and forcefully blow back the liquid, starting from the labium opening through the wind-channel (3). Enclose the labium opening with your lips to do this.

A 'clogging' is usually normal until the block edge is completely wet and the water can run off at the front. If the wood surface in the wind- channel is rough or overlaid with dirt particles, neither pre-warming or Anticondens will help (characteristic: the hoarseness persists). The only solution is to send it in for cleaning. A block which is too swollen increases the clogging tendency.

Hoarse sound PDF-file (20KB)

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