Home    Repair Rates       Instruments for Sale-Sax     Clarinets     Flutes & Piccolos     Mouthpieces    Other      Buying    Wanted     

Neumann KM83i Microphones

I am listing these here for a friend and client - Kim

The Neumann KM83i microphone is a small capsule omnidirectional condenser and was the first microphone made with 48v phantom power technology.
The KM is German for Kleine Microphone (small microphone) (the i stands for XLR), and all the electronics were deliberately made quite small so that the mic could be made with a diameter of only 21 mm and a length of 110 mm.
It has a 10 dB attenuation switch allowing the microphone to be used up close with loud instruments and by placing the pad at the gate of the field-effect transistor (FET), this "pre-attenuation" prevents the hot capsule signal from overloading the front end of the amplifier enabling the mic to handle up to 130db without distortion.
Looking to the schematics, the preamps of these three similar microphones (KM83i, KM84i and KM85i) are identical. The capsules are not - AFAIK: KM83i (KK83), KM84i (KK84) and KM85i (KK85).
The KK85 capsule has the identical size and shape of the KK84, but its low frequency response is -12 dB at 50 Hz- it is a "speech cardioid" capsule.
This microphone is therefore much less sensitive to low frequency interference which may be encountered outdoors or in public address applications, while in close talking range, the characteristic low frequency boost, present in all pressure gradient transducers, is compensated.
The final digits of the KM series denote the polar pattern: 3 for an omni, 4 for cardioid, 5 for a cardioid with bass roll-off and 6 for a microphone with switchable polar patterns. The penultimate digit indicates the amplifier: 6 denoting the AC701 tube, 7 denoting 12V AB powering and 8 denoting phantom power.
Thus the KM83i would be a phantom-powered, omni-directional, small-diaphragm condenser microphone with XLR connectors.

Condition: Some cosmetic wear, (see photos) (original Neumann badges are missing)

Includes: New Pelican blow-mold, moisture-proof carrying case, new Neumann SG21 mic clips, no manuals or cables included.

Notes: Everything works perfectly, recently cleaned, serviced, and tested by Full Compass Systems of Madison, Wisconsin.
This pair - (serial #10,779 and #10,781) were manufactured in May of 1971, as correspondence from Neumann in Germany has revealed.
I am selling these on behalf of my church.
Before I had them cleaned, about 3 years ago, I used them on a live choral and chamber music recording gig, they sounded great on voices and pipe organ and strings.

Price: New pairs of Neumann KM183ís are selling for around $1700.00 on most major audio/video retailer websites, my church would like to see around $1900.00 for these vintage microphones, the proceeds will go to into an audio/video improvement fund to help us advance our current technology.
There is some room to negotiate price, however. Local buyers may arrange for a mic-shootout or trial run.

Contact: Brian via e-mail.

Neumann Microphones

 

Home     Repair Rates    Instruments for Sale- Sax      Clarinets     Flutes & Piccolos     Other       About the Doctor