J-BOX3C, C3 contact microphone


Thank you for purchasing a system ISCHELL. We are delighted to welcome you to the growing number of world-renowned musicians, technicians, sound engineers and artists who have chosen to use our systems. We are at your disposal and we always will be for any questions relating to the use of our systems on your instrument. Your complete satisfaction is a priority for us. Consult the online help and contact us if necessary.

  • The module J-BOX3C is equipped with the contact microphone C3 developed by the brand ISCHELL in order to reproduce with the greatest fidelity the acoustics of your instrument, the attack, the timbre, the woody color, your playing nuances, without the problems of feedback and resumption of surrounding sounds. Our hybrid Air/Contact technology works without a filter between the membrane and the soundboard of your instrument. We thus reproduce on a reduced and isolated scale an ultimate aerial sound recording, controlled by the immediate environment of our specific audio adhesive putty.
  • The sound is comparable to an aerial microphone, fidelity, warmth, width, air… With the acoustic insulation and the feedback resistance of a cell allowing high levels face / returns. You can easily use it in an amp, apply effects or make clean loops. A revolution in the amplification of many instruments on stage! An innovation ISCHELL !
  • All our products are manufactured and assembled in France by hand, with awareness and respect for a job well done, only with high quality components, for products that we hope will bring you satisfaction for many years on stage, in the studio and at each of your performances amplified.
  • You made the right choice, the model J-BOX3 is easy to use, it works with 1 9 volt type 6LR61 battery for approximately 250 hours of use, the microphone input is in Jack and the exit in Jack Hi-Z asymmetrical. A low cut is available to attenuate low frequencies.
  • We strongly recommend that you take a few minutes to read this manual. Indeed, it is important to respect a few principles in order to benefit simply and quickly from these new systems.

What you need to know

  • Always unplug your instrument before retrying placement or changing the low cut.
  • Wash your hands before kneading the putty and carefully clean the bonding areas before doing your tests, they must be dry, non-greasy, clean and smooth.
  • You will find two doses of audio adhesive putty with your system. A white and a gray, they do not have the same sound. Carefully read the instructions for preparing the various contact microphones and those relating to positioning on your instrument in this knowledge base.
  • C3 contact microphone preparation page
  • Use only the audio adhesive putty ISCHELL ! Any other putty will distort the quality of the sound.
  • This system works with 1 9 volt 6LR61 battery for approximately 250 hours of use. Do a rough calculation of your hours to determine the changdefinitely. If the level drops, changget rid of the battery as soon as possible!
  • Plugging in the JACK OUT activates the stack. Unplug it as soon as you are no longer using your instrument to preserve it.
  • Due to the high output impedance (Hi-Z), minimize cable length as much as possible to avoid sound loss and use only cables jacks/Jack high quality mono for in/out connections.
  • Using low cut depends on the instruments and your amplification. The cutoff frequency is at 180Hz, if after finding the best positioning, you lack width in the bass, then try the Flat position (Flat line = Full bandwidth).
  • This system is like your instrument, it is fragile. Never pull on the cables, always remove the microphone delicately from your instrument by taking it by the shell and gently tilting it while removing the putty, to avoid a too sudden suction effect (fragile membrane) and to preserve the surface of the instrument.


  • A small switch on the BOX allows you to attenuate low frequencies.
  • The switch to the left cuts the bass below 180Hz (Line with the slope).
  • To have all the bandwidth (Flat), put the switch to the right (Flat line).


  • Contact microphone C3
  • Technical specifications of the microphones ISCHELL
  • specific putty adhesive audio provided
  • Active electronics
  • High-pass two positions: 180Hz, Flat
  • unbalanced Jack out Hi-Z
  • Works with a 9v type 6LR61 battery for 250 hours of use
  • Microphone kit cable length depending on the instrument, 45 - 65cm
  • Microphone kit/Module connection via cable Jack/Jack mono
  • Belt clip
  • Semi-rigid case
  • Made in France

After-Sales Service

  • Our products are guaranteed against any manufacturing defect for 2 years from the date of purchase.
  • We are at your disposal and we always will be for any questions relating to the use of our systems on your instrument.
  • Your complete satisfaction is a priority for us. Consult the online help and contact us if you cannot find the solution to your problem.
  • Refer to the CGV on for more information on the warranty.


ISCHELL MICROPHONES  119 impasse de la gare – 44800 Saint-Herblain – FRANCE

Tel: +33 (0)6 62 09 54 91 – Email:

Leave comments

Your email address will not be published. Required fields are marked with *