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Shure KSM42/SG

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Large Dual-Diaphragm, Side-Address Condenser Vocal Microphone (Sable Gray)
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.

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
Cartridge Type 
Dual-Diaphragm, Front-Active, Externally Biased Condenser

Frequency Response
60 to 20,000Hz

Polar Pattern

Output Impedance
147 Ω

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 Ω load: 139 dB
2500 Ω load: 139 dB
THD of microphone preamplifier when applied input signal is equiva¬lent to cartridge output at specified SPL

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 Ω load: 131 dB
2500 Ω load: 131 dB

Common Mode Rejection (10 Hz to 100 kHz) 
> 60 dB

Clipping Level (20Hz-20 kHz at 1% THD) 
1000 Ω load: 6.5 dBV
2500 Ω load: 8 dBV

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

Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3

Net: 494 g
with shock mount and pop filter: 820 g

Three-pin professional audio (XLR), male

Power Requirements 
11 to 52 Vdc phantom, 6 mA
More Information
UPC 042406183628
Weight 1.0000
Brand Shure
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