Shure WH30 Condenser Headset Microphones

→ Models: WH30TQG; WH30XLR
→ Type: Condenser, electret bias; Condenser, electret bias with integrated preamplifier
→ Frequency Response: 40 to 20,000 Hz
→ Polar Pattern Output Impedance (at 1kHz): Unidirectional (cardioid) 2400 ohms; Rated 150 ohms (actual) (Tolerates loads as low as 150 ohms with reduced clipping level)
→ Output Level (at 1 kHz; 0 dB = 1 V/Pascal): -55.5 dB (1.7 mV); -54.5 dB (1.9 mV)
→ Signal to noise ratio (ref. A-weighted noise): 63.0 dB at 94 dB SPL (IEC 651)
→ Output Clipping Level (at 1000 Hz): –22 dBV (0.08 V) 2.5KO Load= –8 dBV (0.4V); 1 KO Load= –8 dBV (0.4V)
→ Maximum SPL: 130 dB 2.5KO Load= 142 dB; 1 KO Load= 142 dB
→ Dynamic Range (max. SPL to A-weighted noise level): 99 dB; 111 dB
→ Output Noise (equivalent SPL): 31 dB (typical, A-weighted)
→ Recommended Operating Voltage 5 VDC (pin 2 to pins 3 and 4): 11-52 VDC Phantom power
→ Polarity: Positive sound pressure on diaphragm produces positive voltage on pins 3 and 4 relative to pin 1 (ground) on the mini TA4F connector;Positive sound pressure on the diaphragm produces positive voltage on pin 2 relative to pin 3 of preamplifier output connector
→ Environmental Conditions Operating Temperature –7° to 49° C (20° to 120° F)
→ Environmental Conditions Storage Temperature –29° to 74° C (–20° to 165° F)
→ Environmental Conditions Humidity: 0 to 95% (operating or storage)
→ Cable: 1.2 m (4 ft.) two-conductor, shielded
→ Cable Connector: mini TA4F; XLR
→ Net Weight: Headset= 65 g (2.3 oz); Headset and cord= 60 g (2.1 oz) Preamplifier= 99 g (3.5 oz)
→ Tailored frequency response enhances vocal range
→ Flexible gooseneck for optimum microphone placement
→ Isolation shock mount reduces vibration noise
→ Low-profile, lightweight design
→ Cardioid polar pattern provides maximum gain before feedback
→ High sound pressure level capability
→ Secure snap-on windscreen reduces "p" pops
→ The RPM420 preamp requires phantom power from any 11 - 52 V source. (WH30XLR)