Shure BG4.1 Cardioid Condenser Microphone
The BG4.1 microphone utilizes an advanced condenser transducer design for use in professional instrument sound reinforcement and project studio recording. Its electret cartridge has a wide frequency response for natural sound reproduction, and its high sensitivity and low noise make it an ideal choice for producing quality demo tapes. The BG4.1 also maintains a cardioid polar pattern throughout its frequency range which ensures high gain-before-feedback and maximum isolation from undesired sound sources. Operating voltage is supplied by phantom power from a mixer, or an internal AA battery for 10,000 hours of continuous use. Typical applications for the BG4.1 include acoustic guitar, drums, stringed instruments, and vocals (when mounted on a stand).
Specifications:
- Type: Condenser (electret bias)
- Frequency Response: 40 to 18,000 Hz
- Polar Pattern: Cardioid (unidirectional), symmetrical about axis
- Output Impedance: 600 Ω
- Recommended Input Load Impedance: 800 Ω minimum
- Output Level (at 1,000 Hz):
- Open Circuit Voltage: – 68.0 dB (0.400 mV) 0 dB = 1 V/µba
- Maximum SP:
- 2,000 Ω load: 131 dB (phantom), 127 dB (battery)
- 800 Ω load: 129 dB (phantom), 126 dB (battery)
- Output Noise:
- 20 dB typical, A weighted
- 24 dB typical, weighted per DIN 45 40
- Dynamic Range:
- (maximum SPL, 2 kΩ load, to A-weighted noise level
- 111 dB (phantom); 107 dB (battery)
- Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of microphone output connector
- Power:
- Phantom:
- Supply Voltage: 11 to 52 Vdc
- Current Drain: 2.0 mA max at 52 Vdc
- Reverse polarity protected to: 100 Vdc
- Battery:
- Recommended: 1.5 V alkaline AA size (NEDA 15A)
- Life: up to 10,000 hours
- Environmental Condition: This microphone will operate over a temperature range of –29 to 57o C (–20 to 135o F), and at relative humidity of 0 to 95%.
- Switch: Built in On/Off switch
- Connector: 3-pin male XLR connector designed to mate with Cannon XL series, Switchcraft A3 (Q.G.) series, or equivalent connector
- Case: Steel and brass construction with black painted finish
- Net Weight: 250 g (8.8 oz) less battery
- Open Circuit Voltage: – 68.0 dB (0.400 mV) 0 dB = 1 V/µba
- 2,000 Ω load: 131 dB (phantom), 127 dB (battery)
- 800 Ω load: 129 dB (phantom), 126 dB (battery)
- 20 dB typical, A weighted
- 24 dB typical, weighted per DIN 45 40
- (maximum SPL, 2 kΩ load, to A-weighted noise level
- 111 dB (phantom); 107 dB (battery)
- Phantom:
- Supply Voltage: 11 to 52 Vdc
- Current Drain: 2.0 mA max at 52 Vdc
- Reverse polarity protected to: 100 Vdc
- Battery:
- Recommended: 1.5 V alkaline AA size (NEDA 15A)
- Life: up to 10,000 hours
