X48JC, contact microphone kit C2 or C3, 9 volt battery option


Thank you for purchasing a system ISCHELL. We are delighted to welcome you among the world famous musicians, technicians, sound engineers and artists 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 you cannot find the solution to your problem.

  • The model X48JC consists of the module X48J supplemented by a C2 or C3 contact microphone kit with fixed or removable installation. New types of contact microphones developed by the brand ISCHELL since 2008 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 feedback problems and without picking up the sounds around you. 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 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 X48JC is easy to use, the electronics are remote from your instrument, so they are easily accessible and do not weigh on light instruments. Operation is by 9- to 48-volt phantom power or optional 9-volt battery. A model that 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 spots before doing your tests, they should 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.
  • 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 requires 9v to 48v phantom power to operate or optionally a 9 volt battery.
  • Operate delicately to act on the low cut. A small pointed object is needed to operate the switches.
  • The use of the low cut is not an obligation and depends on the instruments. The 360Hz cutoff is the default position for acoustic instruments. However, if after finding the best positioning for the mic, you lack breadth in the bass, then try 180Hz, middle position, or Flat to get the 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, the membrane is fragile, and to preserve the surface of your instrument.

Low cut

  • A switch on the box allows three cutoff positions 360Hz / 180Hz / Flat.
  • The two switches at the top cut the bass below 360Hz, this is the maximum cut.
  • To have all the bandwidth, in Flat mode, put the left switch at the bottom, the right one remains at the top as in the photo.
  • The 180Hz position is obtained by putting the right switch down, the left one stays up.
  • A drawing represents these positions on the module

9v battery option

  • Two versions exist, with and without output Jack.
  • The 9v battery option allows the system to be powered independently, without phantom power.
  • The exit Jack allows you to enter effects pedals, an amp or go to a wireless HF transmitter.
  • Plugging in the Jack OUT activates the stack, to preserve it, remember to unplug your Jack at the end of the session.

  • Obsolete version
  • With the version without output Jack, the 9v connector serves as a switch, remember to unplug it at the end of the session so as not to let the battery run down.
  • The 9 volt battery can run for approximately 500 hours.


  • Contact microphone kit C2 or C3
  • Technical specifications of the microphones ISCHELL
  • Cable 45cm to 65cm depending on the instrument, 2mm in diameter
  • Fixed installation option: Jack to be installed in the instrument with 12 mm hole
  • Removable installation option: Mounting plate for the jack on the instrument by double-sided or Velcro
  • Special double bass mounting option: Mounting plate for the Jack between two ropes
  • Came microphone in Jack. Requires connecting cable Jack/Jack available here
  • Operates on 9v to 48v phantom power
  • Balanced XLR output. Requires XLR/XLR cable available here
  • Option to run on phantom power + 9 volt battery
  • unbalanced Jack out available on some models with the 9 volt battery option
  • Low cut 3 positions available on the box: Flat / 180Hz / 360Hz
  • Belt clip
  • audio adhesive putty Ischell provided
  • Microphone dimensions: Height 12/13 mm with the putty - Diameter: approximately 25 mm
  • Dimensions of the module without the 9 volt battery: 95 x 30 x 35 mm
  • Dimensions of the module with the 9-volt battery option: 95 x 30 x 50 mm
  • Online user manual
  • Storage bag

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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