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型號變化 |
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XLR type (Supplied with a battery unit and XLR-3-12C
type connector) |
ECM-77B |
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Pigtail type (Supplied without a connector ) |
ECM-77BPT |
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SMC type (Supplied with a Sony 4-pin connector) |
ECM-77BC |
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BMP type (Supplied with a 3.5 mm diameter, 3-pole mini
plug.) |
ECM-77BMP |
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一般 |
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重量 |
XLR type: 122公克
Pigtail type: 26公克
SMC type: 23公克
BMP type: 17公克
Microphone head only: 1.5公克 |
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尺寸 (W x H x D) |
Microphone head:
直徑5.6
x 12.5 mm
Power unit (XLR type only):
直徑20.0
x 133 mm |
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電源需求 |
XLR type: DC 1.5 V (ECM-88B used with the supplied DC-78
battery unit)
Pigtail/SMC/BMP type: DC 1.1 to 10.0 V |
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Capsule type |
Electret Condenser |
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頻率響應 |
40 Hz to 20 kHz |
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方向性 |
全方位-定向 |
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感度 |
XLR type: -52.0 dB ±2 dB Pigtail/SMC/BMP type: -39.0 dB
(11.2 mV) |
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在1kHz的輸出阻抗 |
XLR type: 150 Ω
±20%
(balanced) Pigtail/SMC/BMP type: 2.5 kΩ
±30%
(unbalanced) |
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動態範圍 |
90 dB or more |
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雜訊比 (A-weighted, 1kHz, 1Pa.) |
64 dB or more |
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Inherent noise (0 dB SPL = 2E-5 Pa.) |
30 dB SPL or less |
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|
Wind noise - with windscreen, at 2 m/s (0 dB SPL = 2E-5
Pa.) |
40 dB SPL or less |
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Induction noise from external magnetic field (dB SPL/1E-7
T, 0 dB SPL = 2E-5 Pa) |
5 dB SPL or less |
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最大輸入聲壓級(0
dB SPL = 2E-5 Pa.) |
120 dB SPL |
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電源供應 – XLR型 |
Battery: IECR6 or LR6 Battery life (LR6): Approx. 6000 h
External power: DC 12 to 48 V |
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Current drain |
XLR type (internal battery): 0.3 mA or less XLR type
(external power): 2mA or less Pigtail/SMC/BMP type: 0.4
mA or less |
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電纜長度 |
XLR type: 3.0 m (9.8 feet) Pigtail type: 3.0 m (9.8
feet) SMC/BMP type: 1.2 m (3.9 feet) |
