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Shure, Inc. Shure KSM42 Large Dual-Diaphragm Vocal Microphone

This premium side-address, cardioid condenser microphone features a large dual-diaphragm capsule, optimized for world-class vocal recording and performance applications. With a tailored frequency response and extensive internal and external pop filtering, the single-pattern, dual-diaphragm design of the KSM42, featuring Prethos™ Advanced Preamplifier Technology, exhibits an exceptionally smooth proximity control and ultra-wide dynamic range. The KSM42 is the premier choice for capturing sophisticated, powerful and intimate vocal performances.

A milestone in sound capture, the KSM42 employs transparent internal circuitry architectures that enable exceptional audio quality and performance. The dual- diaphragm design offers unprecedented proximity control regardless of whether the performer is two inches or two feet away from the mic, essential for critical studio and voiceover work.

• Highly consistent cardioid polar pattern creates a broad “sweet spot” and natural off-axis response
• Prethos™ Technology exhibits extremely low self-noise with superior dynamic range, transient response and ultra-low distortion for transparent vocal recording
• Tailored low-frequency roll-off below 100Hz minimizes low frequency room noise
• Passive back diaphragm delivers exceptional control of low frequency proximity effect
• Integrated three-stage mesh grille guards against wind and breath noise
• Internal shock mount reduces unwanted handling and stand noise
• Open cage ShureLock™ rubber suspension shock mount with Popper Stopper™ magnetic pop filter produces natural space between performer and microphone

1. Frequency Response
60 to 20,000 Hz

2. Polar Pattern
Cardioid

3. Output Impedance
147 ohms

4. Sensitivity (at 1 kHz, open circuit voltage)
−37 dBV/Pa (14.1 mV)

5. Maximum SPL (1 kHz at 1% THD)
1000 ohms load: 139 dB
2500 ohms load: 139 dB

6. Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)
86 dB

7. Dynamic Range (at 1 kHz)
1000 ohms load: 131 dB
2500 ohms load: 131 dB

8. Self Noise (typical, equivalent SPL, A-weighted)
8.5 dB