Shure SM7d1B Manual page 17

SM7dB DYNAMIC VOCAL MICROPHONE WITH BUILT-IN PREAMP
OVERVIEW
The SM7dB is a cardioid dynamic microphone with a Shure-designed built-in preamp providing up to +28 dB of low-noise,
flat, transparent gain ideal for lower-output interfaces and simplified audio chains. Delivers warm and smooth audio for vocal
and studio applications. Preamp bypass switch, adjustable bass roll-off and presence boost, electromagnetic hum shielding,
internal shock mounting, and external windscreen ensure clear and consistent audio reproduction.
FEATURES
• Built-in active preamp providing either +18dB or +28dB of extra gain delivers levels suitable for any interface.
• Flat, wide-range frequency response for exceptionally clean and natural reproduction of both music and speech.
• Preamp bypass switch to revert to original SM7B performance.
• Bass roll-off and mid-range emphasis (presence boost) EQ switch controls.
• Superior rejection of electromagnetic hum, optimized for shielding against broadband interference emitted by
computer monitors.
• Internal "air suspension" shock isolation virtually eliminates mechanical noise transmission.
• Highly effective pop filter eliminates need for any add-on protection against explosive breath sounds, even for close- up
vocals or narration.
• Yoke mounting with captive stand nut for easy mounting and dismounting provides precise control of microphone position.
• Classic cardioid polar pattern, uniform with frequency and symmetrical about axis, to provide maximum rejection and
minimum coloration of off-axis sound.
• Rugged construction and excellent cartridge protection for outstanding reliability.
SPECIFICATIONS
Type
Dynamic (moving coil)
Polar Pattern Cardioid
Frequency Response 50 Hz to 20 kHz
150 Ω in Bypass Mode
Output Impendance
27 Ω in Preamp Mode
Sensitivity -59 dBV/Pa[1] (1.12 mV) Flat Response Bypass Mode
(at 1 kHz, open circuit voltage) -41 dBV/Pa[1] (1.12 mV) Flat Response +18 Preamp Mode
[1] 1 Pa=94 dB SPL -31 dBV/Pa[1] (1.12 mV) Flat Response +28 Preamp Mode
Polarity relative to Pin 3
Positive pressure on diaphragm produces positive voltage on Pin 2
Net Weight 837 g (1.875 lbs)
Housing Black enamel aluminum and steel case with black foam windscreen
AVAILABLE MODELS
SM7dB Includes foam windscreens & 3/8" thread adapter
OPTIONAL ACCESSORIES AND REPLACEMENT PARTS
RK345B
Black Close-Talk Windscreen
A7WS Black Large Close-Talk Windscreen
RPM106B Internal Microphone Cartridge
RPM604B Yoke Nut & Washer Replacement Kit
POLAR PATTERN
FREQUENCY RESPONSE
SM7dB
Dynamic vocal microphone
with built-in preamp
SM7dB
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