Shure KSM42 Large Dual-Diaphragm Cardioid Condenser Microphone

Shure's KSM42 is a dual-diaphragm cardioid microphone delivers exceptionally smooth proximity control and ultra-wide dynamic range. It features a natural off-axis response, a dual-diaphragm with a gold Mylar diaphragm, 3-stage grille, and internal shock mount.

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 achievement in sound reinforcement, Prethos Advanced Preamplifier Technology employs transparent internal circuitry architectures that enable unprecedented audio quality and performance.

Shure KSM42 Features

• Highly consistent cardioid polar pattern creates a broad “sweet spot” and natural off-axis response
• Prethos® Advanced Preamplifier Technology exhibits extremely low self-noise with superior dynamic range, transient response and ultra-low distortion for transparent recording
• Dual-diaphragm design with an active front, ultra thin (2.5 micron) 24-karat gold, low mass, 1-inch Mylar® diaphragm
• Passive back diaphragm delivers exceptional control of low frequency proximity effect
• Tailored low-frequency roll-off minimizes low frequency room noise
• Integrated three-stage mesh grille guards against wind and breath noise
• Open cage ShureLock® rubber suspension shock mount with low-profile Popper Stopper™ magnetic pop filter produces a natural space between performer and microphone
• Extremely low self noise for critical studio vocal recording
• Premium electronic components and gold-plated internal and external connectors
• Durable zinc die-cast housing and hardened low carbon steel grille
• Internal shock mount to reduce unwanted handling and stand noise

• KSM42 Large Dual-Diaphragm Cardioid Condenser Microphone1
• A42SM Shurelock Rubber Suspension Shock Mount1
• A42PF Popper Stopper Magnetic Pop-Filter1
• AK42C Zippered Carrying Case1
• A42VB Protective Velveteen Pouch1
• A42OR Spare Set of Rubber Suspension Shock Mount O Rings1

• Transducer TypeCondenser
• Polar PatternCardioid
• Frequency Response60 Hz - 20 kHz
• Output Impedance147 ohms
• Sensitivity (at 1 kHz, open circuit voltage)
  • −37 dBV/Pa (14.1 mV)
  • 1 Pascal=94 dB SPL
• Maximum SPL (1 kHz at 1% THD)
  • 1000 ohms load: 139 dB
  • 2500 ohms load: 139 dB
• Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)
  • 86 dB
  • S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
• Dynamic Range (at 1 kHz)
  • 1000 ohms load: 131 dB
  • 2500 ohms load: 131 dB
• Common Mode Rejection (10 Hz to 100 kHz)> 60 dB
• Clipping Level (20Hz-20 kHz at 1% THD)
  • 1000 ohms load: 6.5 dBV
  • 2500 ohms load: 8 dBV
• Self Noise (typical, equivalent SPL, A-weighted)8.5 dB
• Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
• Weight Net494 g. with shock mount and pop filter: 820 g
• Connector Three-pin professional audio (XLR), male
• Power Requirements 11 to 52 Vdc phantom, 6 mA

More about the KSM Series from Shure

The KSM Series of microphones is Shure’s premium range of studio mics for vocals and instruments. Boasting full frequency response and minimized proximity effect, all KSM models are designed to capture transients with more top-end and clarity than entry-level dynamic mics. They deliver natural sound reproduction, wide dynamic range, condenser-caliber sensitivity, and low self-noise. Capable of capturing the smallest nuances and subtleties of your audio, KSM is ideal for meeting the demands of audio professionals including singers, instrumentalists, and engineers. This family of mics is a great addition to audio setups including recording studios and live stage venues.