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 |
| Output Impendance | 150 Ω in Bypass Mode, 27 Ω in Preamp Mode |
| Sensitivity (at 1 kHz, open circuit voltage)[1] 1 Pa=94 dB SPL | 9 dBV/Pa[1] (1.12 mV) Flat Response Bypass Mode 41 dBV/Pa[1] (1.12 mV) Flat Response +18 Preamp Mode 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 |
