Huhu BM-800
Cardioid Condenser Microphone
The BM-800 is a very low-cost electret condenser microphone that is sold under a variety of brand names on Ebay and Amazon. It is remarkable for its price — under $20, including a shockmount.
The packaging of our sample microphone describes the BM-800 as a “large diaphragm” design. This is untrue; the capsule is a 16mm, small diaphragm electret model.
The circuit does not supply polarization voltage to the capsule; would-be DIY upgrade enthusiasts are limited to other electret choices, unless the mic’s circuit is replaced too.
The circuit is constructed of primarily surface-mount parts; the JFET and two electrolytic capacitors are through-hole components.
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Specifications
Pickup Patterns | Pads & Filters |
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Cardioid
(19.9 mV/Pa; 20 - 20,000 Hz) |
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Capsule Dimensions | Impedance | SPL/Noise |
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Capsule diameter: 16mm |
150 Ohms (Low) | Max SPL: 130 dB Self-noise: 16.0 dB(A) |
Weight | Length | Max Diameter | Interface(s) |
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230g (8.11oz) | 150mm (5.91'') | n/a |
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Power Specifications |
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