B&K microphones, impedance head, accessories

This page copyright 2010, Herb Johnson. These B&K products are untested currently. Obtained as a lot, in the original cases (most have matching serial numbers). They appear to date from the late 1960's or early 1970's.

These are intended for laboratory testing and use, as well-calibrated acoustic devices. There's a number of B&K and other documents on the Web which describe these products. Here's an exerpt from a B&K technical manual which explains these microphones. - Herb Johnson, July 2010

B&K 8001 impedance head, with cal chart also three cables, mechanical part, hex wrench. Cal chart dated 1972.

B&K ZR 0020 integrator, and circular slide rule in case, with one cable.

B&K 4135 1/4-inch cartridge microphone in case with cal chart (dated 1967), JJ 2614 adapter , 4131 4132 booklet, 2612 OR 2613 Cathode follower (described in book),

B&K 4131 1-inch cartridge microphone, cal chart, notes, special petro wax. In case

B&K 8000 8001 impedance head, book ONLY

Contact information:

Herb Johnson
New Jersey, USA
To email @ me, see see my contact and ordering Web page.