Shure BG4.1 Condenser Microphones (Pair)

Shure MODEL BG4.1 UNIDIRECTIONAL CONDENSER MICROPHONES (Pair)
In excellent condition, can be powered by a single AA battery or 48v Phantom Power.
Includes mic clip.
Typical applications for the BG4.1 include acoustic guitar, drums, stringed instruments, and vocals (when mounted on a stand).
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 (Figure 2)
Polar Pattern
Cardioid (unidirectional), symmetrical about axis
Output Impedance
600 Ω
Recommended Input Load Impedance
800 Ω minimumOutput Level (at 1,000 Hz)
OpenCircuitVoltage ...........–48.0dBV/Pa(4.0mV) 1 Pascal=94 dB SPL
Maximum SPL
2,000Ωload....... 131dB(phantom), 127dB(battery)
800Ωload ........ 129dB(phantom),126dB(battery)
Output Noise
20 dB typical, A weighted
24 dB typical, weighted per DIN 45 405Dynamic 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
PhantomSupplyVoltage ................... 11to52Vdc
CurrentDrain ............2.0mA max at 52Vdc
Reverse polarity protected to ...........100Vdc
BatteryRecommended . . . . . . . . . . . 1.5 V alkaline AA size
(NEDA 15A) Life . . . . . . . . . . . . . . . . . . . . . . . . up to 10,000 hours
Environmental Conditions
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