{"product_id":"neumann-km-140-stereo-pair-used","title":"Neumann KM 140 Stereo Pair (Used)","description":"The \u003cb\u003eNeumann KM 140 \u003c\/b\u003esystem consists of the AK 40 cardioid capsule and KM 100 output stage.\u003cp\u003eThe variable condenser miniature microphone system consists of several active microphone capsules with different directional characteristics, an output stage, and numerous accessories.\u003cbr\u003e\u003c\/p\u003eCurrently there are seven active capsules available: omni diffuse-field equalized, omni free-field equalized, cardioid, wide-angle cardioid, cardioid with bass roll-off, hypercardioid, and figure-8.\u003cbr\u003e\u003cbr\u003eThrough the modular construction of mic capsules and the output stage it is very easy to adapt the system to a wide range of applications. The mic becomes nearly invisible during work with cameras (film, video), on stage, or suspended from the ceiling in a concert hall.\u003cbr\u003e\u003cbr\u003eAn active capsule can also be screwed directly onto the output stage. The result is a compact miniature microphone.\u003cb\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eConstruction\u003c\/b\u003e\u003cbr\u003eThe microphones are only 92 or 110 mm resp. long and 22 mm in diameter. They consist of the condenser capsule and the output stage. Both parts can be unscrewed from each other. The system offers several condenser capsules with different directional characteristics.\u003cbr\u003e\u003cbr\u003eNumerous accessories can be mounted between the capsules and the output stage. The capsules attach to cables, capsule extensions, swivel mounts, table stands, goose-necks, stereo mounts, and hangers. Therefore, it is very easy to adapt the system to a wide range of applications.\u003cbr\u003e\u003cbr\u003e\u003cp\u003eThe active capsule itself is only 35 or 47 mm resp. long. The KM 100 output stage and the active microphone capsule may be separated by up to 50 m of interconnecting cable. These cables are 3 mm in diameter, and therefore very inconspicuous.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cb\u003eAcoustic features\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eAK 40 is a pressure gradient transducer with cardioid characteristic. The frequency curves are very smooth and match 0° sound incidence. Sound from sources within a pickup angle of ± 135° is reproduced without any coloration.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eElectrical features\u003c\/b\u003e\u003cbr\u003eThe KM 100 is phantom powered (48 V) and uses transformerless output circuitry. This has several advantages. It features high output capability and extremely low self noise. It provides exceptionally clean sound, free of any coloration. As with traditional transformers, this circuit approach ensures good common mode rejection. The balanced output signal is protected against interference.\u003cbr\u003e\u003cbr\u003eThe construction is extremely compact. The entire microphone circuitry is on a single hybrid module measuring only 2 cm² in area. It is built into the microphone capsule, therefore the term “active capsules”.\u003cbr\u003e\u003cbr\u003eAll sensitive components are protected within the capsule. As a result, the quality of the audio signal is never compromised through the use of accessories, for example, when the capsule is detached from the output stage and mounted on a cable or a gooseneck.\u003cbr\u003e\u003cp\u003eEven with a long cable between active capsule and output stage, the signal is immune to external interference.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cb\u003ePreattenuation\u003c\/b\u003e\u003cbr\u003eThe output stage has a 10 dB switch. Attenuation is achieved by reducing the capsule voltage to one third.\u003cbr\u003e\u003cp\u003eWhen the switch is on, the microphone is capable of accepting sound pressure levels up to 150 dB without being overloaded.\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eConnectors\u003c\/b\u003e\u003c\/p\u003eTo diminish the number of connectors within the KM 100 System some accessories were modified. They can now be screwed directly onto the KM 100 output stage without using the KA 100 cable adapter. The new accessories which include the cable adapter, were renamed adding the suffix KA. For example: LC 3 is now LC 3 KA.\u003cbr\u003e\u003cbr\u003eThe separate KA 100 cable, needed for older accessories, will be available also in future.\u003cbr\u003e\u003cbr\u003eThe KM 100 output stage has a 3-pin XLR connector.\u003cbr\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cb\u003eSound diffraction sphere\u003c\/b\u003e\u003cbr\u003eThe SBK 130 A sound diffraction sphere slips onto the front of the KM 130\/KM 131 pressure microphones. The diaphragm becomes an integral part of the surface of the sphere. This affects the frequency response of the microphones.\u003cbr\u003e\u003cbr\u003eWhile sounds coming from the front-half space are emphasized by up to 2.5 dB between 2 kHz and 10 kHz, sounds arriving from the rear-half space are attenuated by a maximum of 2.5 dB in the range above 5 kHz.\u003cbr\u003e\u003cbr\u003eSince the sound diffraction sphere causes the pressure buildup of the KM 130\/KM 131 pressure microphones to begin earlier, the frequency response rises smoothly in the middle and upper range. This is similar to a typical pressure gradient microphone, where the directivity increases with rising frequencies. However, since the KM 130\/KM 131 are pressure microphones, they maintain a linear sensitivity down to the lowest frequencies.\u003cbr\u003e\u003cbr\u003eThis changing directivity allows to record at a greater distance from the sound source, and makes the KM 130\/KM 131 microphones especially suited as stereo main microphones in A-B configurations.","brand":"Neumann","offers":[{"title":"Default Title","offer_id":44449525301351,"sku":"31633","price":1495.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_31633_1_31718d7d-bbd3-4218-b67e-c3313220f7fc.jpg?v=1787089314","url":"https:\/\/vintageking.mom\/products\/neumann-km-140-stereo-pair-used","provider":"Vintage King","version":"1.0","type":"link"}