Sennheiser MKE 212 Instructions for Use - Page 5

MZA 10 N Batterieadapter zum AnschluB an symmetrische niederohmige Eingange. Der Ausgangspegel entspricht dem dynamischer Mikrofone. 3pol. DIN-AnschluBstecker. MZA 10-U Batterieadapter zum Anschluf3 an symmetrische niederohmige Eingange. Der Ausgangspegel entspricht dem dynamischer Mikrofone. 3pol. Cannon-AnschluBstecker. K3N/K3U Griff+Speise-Modul der Elektret-Modulserie (mit 2stufigem BaBabschwacher) zum AnschluB an symmetrisch niederohmige Eingange. Der Ausgangspegel entspricht dem dynamischer Mikrofone. 3pol. DIN-AnschluBstecker (K 3 N) oder XLR-Steckverbinder (K 3 U). K 30 AV Griff + Speise-Modul des Sennheiser-Elektret-Mikrofon-Modulsystems. Unsymmetrisch, niederohmig, hoher Ausgangspegel, Ausgangsseitig mit 8pol. Steckereinsatz. MS10 T/MS 10 P Ermoglicht Speisung des MKE 212 R aus Phantom-Speisungsnetzen bzw. Tonader-Speisungsnetzen. Beide Adapter sind mit 3pol. DIN-, XLRoder Lemo-Steckverbindern erhaltlich. MS 10 P mit 5:1 Ubertrager. MS14 PU Ermoglicht Speisung des MKE 212 R aus 10-52 V-Phantom-Speisungsnetzbn. Im Unterschied zu MS 10 P keine Pegelverluste durch Ubertrager. Ausgangsseitig mit 3pol. XLR-Stecker. MZV 10 kabel zur Verlangerung der Mikrofonleitung. Beidseitig mit 8pol. Steckverbindern ausgerustet. r MZA 10/N/- MS14 PU MS 10 K3N/U K30AV 5 MZV 10 ACOUSTICAL BOUNDARY MICROPHONE MKE 212 The MKE 212 is an acoustical boundary microphone which utilizes the increase in sound pressure on acoustically live surfaces and, due to its flush mounting into the surface, does not pick up reflections on this surface. In the interest of better understanding, here a few explanations about the working principle of the acoustical boundary microphone: A microphone with no or only low directivity, positioned in the centre of a room, will show irregularities in frequency response. This, the so-called comb filter effect, is caused by reinforcements and cancellations of sound pressure between direct and indirect, reflected sound. Picking up the sound with the same microphone located a few millimeters from a live surface, e.g. a wall, gives in the ideal case an in-phase addition of direct and reflected sound which results in an increase in sound pressure of 6 dB, independent of frequency. Simulating this wall, or the acoustically live surface with a metal disc or a similar device into which a pressure microphone has been flush mounted creates a microphone which differs in two ways from conventional pressure microphones: 1. Since there is always a pressure maximum directly at the boundary, the phase relationship remains defined at any time. 2. Due to the negligible distance to the boundary, the microphone exhibits no comb filter effect. The effectiveness of the pressure zone depends on the size of the surface. On small surfaces, the low-end cutoff frequency is very high; on large surfaces, it drops correspondingly lower. Due to its dimensions of 185 mm x 165 mm, the MKE 212, measured alone in the free field, demonstrates this pressure increase above approx. 1 kHz. In applications on the floor or at a wall, this pressure increase shifts to the lowest frequencies. A characteristic of the Sennheiser acoustical boundary microphone is the fact that the microphone capsule is mounted flush with the surface. To eliminate furtherieflections which again would cause irregularities in frequency response, there are no parts protruding from the surface. Just as in dummy head technology, the acoustical boundary microphone is not a "revolution" in sound recording, but it provides an extraordinarily detailed impression of the depth of the room with the additional possibility of achieving striking recordings of excellent transparency with only one or two microphones. Models available MKE 212 R With 8-pin DIN plug for connection to battery adapters MZA 10, MZA 10 N and MZA 10 U, powering adapter MS 10 and MS 14 PU as well as to 6