By using Golden drops technology for capsule and body from well proven BT-201 JZ has come out with new mic - BT-301. It is a middle large diaphragm condenser which produce warm and detailed sound in cardioid.
The mic offers five year warranty and is available in limited amount. The main profile for mic is acoustic guitar and strings.
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JZ BT 301 |
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Transducer type |
electrostatic condenser |
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Operating principal |
pressure gradient |
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Diaphragms active diameter |
0,8"/21mm |
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Frequency range |
20 Hz to 20 kHz |
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Polar pattern |
Undirectional, cardioid |
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Output impedance |
50 ohms |
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Rated load impedance |
1000 ohms |
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Suggested load impedance |
>500 ohms |
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Sensitivity at 1000 Hz into 1000 ohms load |
33mV/Pa
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S/N Ratio CCIR 468-3 weighted |
76 dB |
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S/N Ratio DIN/IEC 651 A-weighted |
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87 db-A |
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Equivalent noise level DIN/IEC A-weighted |
5,5 dB-A |
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Maximum SPL for 0.5% THD at 1000 ohm load |
133,5 dB |
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Dynamic range of the microphone preamplifier |
128 db |
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Phantom powering voltage on pins 2 & 3 of XLR |
+48 V (+/-4 V) |
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Current consumption |
< 2 mA |
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Output connector |
3-pin XLR male, gold plated
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contacts |
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Signal polarity |
positive toward pressure on a |
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diaphragm produces positive |
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polarity voltage on XLR pin #2 |
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relatively to pin #3 |













