Ultra-Compact Side-Address Instrument Microphone
By: Shure
Microphones, Headphones & Wireless systems
Shure : BETA-181
Description
The Shure Beta Microphone Series
BETA 181 is an ultra-compact, small-diaphragm side-address condenser microphone, designed for discreet placement and control in live and studio environments. The BETA181 features interchangeable cardioid, supercardioid, omnidirectional and bidirectional capsule options for superior versatility, the small diaphragm design provides superior audio with consistent, textbook polar responses in a form factor small enough to get close to the source in the tightest conditions.
Features
→ Premier live performance microphone with Shure quality, ruggedness, and reliability→ Compact preamp attaches to four interchangeable capsules→ Wide dynamic range for use in high SPL environments→ Side-address form allows for discreet positioning in tight performance and recording settings→ Innnovative locking ring provides a secure connection between capsule and preamp→ Hardened steel mesh grille resists denting, wear, and abuse→ Compact design, under 12 cm (5 in.), reduces stage clutter→ Furnished with stand adapter and carrying caseSpecifications
| Cartridge Type | Electret Condenser |
| Polar Pattern | 181/C= Cardioid; 181/S= Supercardioid; 181/O= Omnidirectional; 181/BI= Bidirectional |
| Frequency Response | 20 to 20,000 Hz |
| Output Impedance | 110 O |
| Sensitivity open circuit voltage, @ 1 kHz, typical | Cardioid= –46.5 dBV/Pa[1] (2.4 mV); Supercardioid= –49.5 dBV/Pa[1] (2.5 mV); Omnidirectional= –52.0 dBV/Pa[1] (2.6 mV); Bidirectional= –51.0 dBV/Pa[1] (2.6 mV) |
| Maximum SPL 1 kHz at 1% THD[2] | 2500 O load= Cardioid: 151.5 dB SPL; Supercardioid= 154.5 dB SPL; Omnidirectional= 157.0 dB SPL; Bidirectional= 156.0 dB SPL |
| Maximum SPL 1 kHz at 1% THD[2] | 1000 O load= Cardioid: 149.0 dB SPL; Supercardioid= 152.0 dB SPL; Omnidirectional= 154.0 dB SPL; Bidirectional= 153.5 dB SPL |
| Signal-to-Noise Ratio[3] | Cardioid= 73.5 dB; Supercardioid= 71.5 dB; Omnidirectional= 70.5 dB; Bidirectional= 71.0 dB |
| Dynamic Range 2500 O load | Cardioid: 131.0 dB; Supercardioid= 132.0 dB; Omnidirectional= 133.5 dB; Bidirectional= 133.0 dB |
| Dynamic Range 1000 O load | Cardioid: 128.5 dB; Supercardioid= 129.5 dB; Omnidirectional= 130.5 dB; Bidirectional= 130.5 dB |
| Clipping Level @ 1 kHz, 1% THD | 2500 O load= 10.5 dBV |
| Clipping Level @ 1 kHz, 1% THD | 1000 O load= 7.5 dBV |
| Self Noise equivalent SPL, A-weighted, typical | Cardioid= 20.5 dB SPL-A; Supercardioid= 22.5 dB SPL-A; Omnidirectional= 23.5 dB SPL-A; Bidirectional= 23.0 dB SPL-A |
| Common Mode Rejection 20 to 20,000 kHz | >_55 dB |
| Polarity | Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 |
| Power Requirements | 11–52 V DC[4] phantom power (IEC-61938) 2.4 mA, maximum |
| Net Weight | 145 g (5.1 oz.) |