Microphone na nickel USM 69 i Variable-Pattern Stereo Microphone tare da Microphone Cable/Swivel Mount daga Neumann makirufo ne tare da capsules guda biyu daban-daban na diaphragm. Ana hawa waɗannan a tsaye kuma suna juyawa da juna. Za'a iya zaɓar tsarin polar na jagora daban don kowane capsule. Capsules suna aiki da kansu daga juna. Makirifo ya ƙunshi sashin amplifier da kan capsule. Sashen amplifier yana ƙunshe da na'urorin ƙararrawa guda biyu masu aiki da kansu daga juna. Suna da ƙananan hayaniyar kai. Kwamfutocin marufofi guda biyu daban-daban suna ajiye su kusa da juna a cikin kan capsule. An yi diaphragm ɗinsu daga fim ɗin polyester mai zubar da zinari. Capsule na sama yana jujjuyawa da na ƙasa sama da kewayon 270¡ã. Alamun launi akan tsarin ƙananan capsule suna taimakawa wajen gano kusurwar da aka juya capsule na sama. Lokacin da raƙuman sauti ya isa ga maƙallan marufofi daga wurare daban-daban za su samar da siginar sauti tare da ƙarfi daban-daban kawai, amma ba tare da bambance-bambancen lokaci ba, tunda capsules suna kusa da sautin yana zuwa duka capsules a lokaci guda. Sakamako shine siginar sitiriyo mai ƙarfi wanda za'a iya haɗa shi tare don kyakkyawar dacewa ta mono ba tare da haifar da tsangwama ba. USM 69 i yana da na'urorin juyawa guda biyu da aka gina a ciki. Za'a iya zaɓar ƙirar polar guda biyar na duka capsules a makirufo kanta. Don haka, babu na'urorin samar da wutar lantarki na AC na musamman ko adaftar wutar lantarki da suka zama dole. Abubuwan da aka fitar guda biyu suna haɗe kai tsaye zuwa kowane masu haɗin 48V masu ƙarfin fatalwa. Bugu da ƙari ga tsarin polar da aka saba (omnidirectional, cardioid, da Figure-8), wannan makirufo yana da hypercardioid da tsarin cardioid mai faɗin kusurwa. Ginshirin mai sauya DC yana haifar da ƙarfin ƙarfin da ake buƙata na capsule-polarizing. Amplifiers sun ƙunshi ƙarfin fitarwa mai girma da ƙaramar ƙarar hayaniyar kai. Maɓuɓɓukan sauti masu nisa, da kuma maɓuɓɓugan sauti masu ƙarfi a kusa da kewayo ana iya yin rikodin su ba tare da wata matsala ba. Kowane amplifier yana da tace mai aiki. Yana kawar da tsangwama na subsonic yadda ya kamata kamar yadda iska ko hayaniya ta haifar da tsari. A lokaci guda kuma, tacewa yana hana abubuwan da ake fitarwa fitarwa daga yin lodi ta hanyar makamashi mai ƙarancin ƙarfi. Ana iya amfani da makirufonin azaman makirufo ɗaya masu zaman kansu gaba ɗaya. Akwai aikace-aikace da yawa lokacin da yana da mahimmanci a sami makirufo mono na biyu azaman madadin, ko lokacin da abubuwan da ake fitarwa na makirufo tare da halaye daban-daban na amsawar polar dole ne a samu a lokaci guda. Ana iya haɗa abubuwan da ke fitowa daga tashoshin makirufo biyu (cascaded). Bugu da ƙari ga tsarin jagorancin mutum ɗaya, wasu halaye suna samuwa ta hanyar haɗuwa da tashoshi biyu. Dukansu tsarin makirufo suna aiki gaba ɗaya masu zaman kansu daga juna. Amplifier na biyu ba zai yi tasiri ba, ko da a yanayin kasa mara kyau na wutar lantarki na ɗaya daga cikin tashoshi, ko gajeriyar kewayawa a ɗaya daga cikin abubuwan da aka fitar. Makirifo abin dogaro ne a cikin amfani da mono, koda ɗaya ne kawai daga cikin tsarin ke sarrafa kuma an haɗa shi. Sauraron sa mai sauƙi da ƙari yana ba da ƙarancin gazawa. Idan mai canza DC ɗin ya taɓa yin kasawa, da'irar diode a cikin makirufo tana tabbatar da cewa tsarin biyu zasu ci gaba da aiki. Ana zaɓar ƙirar cardioid ta atomatik.
Neumann USM 69 i SpecsMicrophoneOperating PrinciplePressure GradientCapsuleCondenserPolar PatternCardioid, Figure-8, Hypercardioid, Omnidirectional, Subcardioid/Wide CardioidPattern SelectionSwitchedPerformanceFrequency Range20 Hz to 20 kHz Maximum SPL132 dB SPLImpedance150 OhmsLoad Impedance1000 OhmsSensitivity13 mV/Pa at 1 kHz into 1 KilohmsSignal-to-Noise Ratio70 dB CCIR81 dB A-Mai nauyi Daidaitan Hayaniyar Level24 dB CCIR13 dB A-Mai nauyiTHD0.5% Powerarfin Wutar Lantarki48 V ¡À 4 VOperating Amfanin Yanzu0.7 mAPhysicalDimensions?: 1.89 x L: 11.54″ 48?gS