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Shure SM94-LC manual

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Table of contents for the manual

  • Page 1

    Model SM94 User Guide © 2005, Shure Incorporated 27C2689 (Rev . 5) Printed in U.S.A. MODEL SM94 UNIDIRECTIONAL CONDENSER MICROPHONE The Model SM94 is a unidir ectional electret condenser microphone tailored to the instrumen t miking needs of profe ssional musicians and sound engineers in both live performance an d sound recording. Its smooth, flat[...]

  • Page 2

    2 Output Impedance Rated at 150 Ω ; 200 Ω actual Recommended Mi nimum Load Im pedance 800 Ω Sensitivity (at 1,000 Hz) Open Circuit Voltage: –49 dBV/Pa (3.5 mV) (phantom) –50 dBV/Pa (3.2 mV) (batte ry) (1 Pa = 94dB SPL) Output Clipping Level (1 kHz, 3% THD) 800- Ω Load–14 dBV (0.6 3 V) (phantom), 1% THD; –23 dBV (0.71 V) (battery) , 3% T[...]

  • Page 3

    3 regulates the phantom voltage, an d the 1.5-volt battery provides instantaneous backup in case the phantom power supply fails. Th e regulator/reverse voltage protector provide s built-in protection against miswired cabl es and equipment. TROUBLESHOOTING Due to the circuit complexity of the SM94, only basi c servicing is recommended. The following[...]

  • Page 4

    4 MODÈLE SM94 MICROPHONE A CONDENSATE UR UNIDIRECTIONNEL CARACTÉRISTIQUES Type Cardioïde à Condensateur (Electret) Réponse en fréquence 40 à 16 000 Hz (Voir Figure 1) RÉPONSE EN FRÉQUENCE FIGURE 1 Directivité Réponse cardio ïde (unidirectio nnelle)-unifor me avec la fréquence, symétrique sur axe (Voir Figure 2). DIRECTIVITÉ FIGURE 2 [...]

  • Page 5

    5 MODE D'EMPLOI Le SM94 est conçu pour être utilis é avec une alimentation fantame par un Shure modèle PS1A, ou par toute alimentation de microphone délivrant un e tension fantôme de 12 à 48 V olts continus. De plus, le SM94 peut être alimenté par une pile alcaline de 1,5 volt (IEC type LR6). La pile sert aussi d'alimentation de [...]

  • Page 6

    6 Geräuschspann ungsabstand 71 dB (IEC 651) bei 94 dB Schalldruck Überspannung u nd Umkehrpolar itätsschutz Max. Externe Spannu ng an Stift 2 & 3 gegen Stift 1: + 52 Vdc Umkehrpolaritä tsschut z bis zu 100 V DC Phasenlage Positiver Druck auf Membran e = pos. Spannung auf Stift 2 relativ zu Stift 3 System ⋅ Kapazität 24 pF Leistung sverbr[...]

  • Page 7

    7 MODELO SM94 MICROFONO DE CONDENSADOR UNIDIRECCIONAL ESPECIFICACIONES Tipo De condensador ca rdioide (polarizado electret) Respuesta de frecuenc ia 40 a 16 000 Hz (Ver Figura 1) RESPUESTA DE FRECUENCIA FIGURA 1 Curva polar Respuesta cardioide (unidi reccional)-Uniforme con la frecuencia, simétr ica según eje (Ver figura 2) CURVA POLAR FIGURA 2 I[...]

  • Page 8

    8 OPERACION El SM94 está disenado para la alimentación simplex p or medio de la fuente modelo PS1A, o por prácticamente cualquier fuente de alimentación que provea de 12 a 48 V .c.c. en modo fantasma. Además, el SM94 puede ser a limentado por una sola pila alkalin a de 1.5. voltios (IEC LR6 de tipo). La pila sirve también como respaldo en cas[...]