inside Box + CPJ


inside BOX + CPJ contact microphone C1 or C2


Thank you for purchasing a system ISCHELL. We are delighted to welcome you to the growing number of world-renowned music, technician, audio engineers and artist users who have chosen to use our systems. We are at your disposal and we will always remain so over time, for any question 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 model inside BOX + CPJ is equipped with a contact microphone 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 and your playing nuances, without the problems of feedback and the 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 putty audio adhesive.
  • 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 inside BOX + CPJ is easy to use, it works with 2 CR2032 button batteries (approximately 300 hours), it comes out on Jack asymmetrical, is removable and adapts to many instruments ...
  • 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 attempting placement again 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.
  • Original C1 contact microphone preparation page
  • C2 and C3 contact microphones preparation page
  • Use only the audio adhesive putty ISCHELL ! Any other putty will distort the quality of the sound.
  • This system works with 2 CR2032 batteries for approximately 250 hours of use. Fdo a rough calculation of your hours to determine their changdefinitely. If the level drops, changRemove batteries as soon as possible!
  • Plugging in the jack OUT activates the batteries. Unplug it as soon as you no longer use your instrument in order to preserve them.
  • Use only jacks mono for in / out connections
  • The changThe batteries are removed using a small pointed object that must be inserted between the two batteries. Lift the top battery slightly to extract it. Do not bend the contact blade excessively, risk of breakage! Then insert the new batteries with the + on top.
  • The use of the low cut is not compulsory and depends on the instruments. The 360Hz cut-off is the default position for acoustic instruments, your system is delivered to you in this position. However, if after finding the best position you are running out of bass width, then try 180Hz (Mid Position) or Flat (Full Bandwidth).
  • Operate delicately to act on the low cut. A small pointed object is needed to operate the switches.
  • 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.

Low cut

  • Two small switches are on the BOX allowing three 180Hz / 360Hz / Flat positions.
  • The bottom left switch, the top right one as in the photo cuts the bass below 360Hz (maximum cutoff).
  • To have all the bandwidth (Flat), push the two switches to the right.
  • The 180Hz position is obtained by putting the top switch on the left (the bottom one remains on the right).


  • Model inside BOX ISCHELL
  • Contact microphone C1 or C2
  • Technical specifications of the microphones ISCHELL
  • specific putty adhesive audio provided
  • Active electronics
  • High pass three positions: 360Hz, 180Hz, Flat
  • unbalanced Jack out
  • Works with two CR2032 button batteries for 300 hours of use
  • Microphone kit cable length depending on the instrument, 45 - 65cm
  • Possible fixing of the BOX and the microphone kit by Velcro scratch
  • BOX + microphone kit weight: 120 grams
  • 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 will always remain so in time for any question 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:

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