Preamplifier Best Practices; Using Variable Impedance Mic Preamplifiers; Microphone Placement - Shure SM7dB Online User's Manual

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Preamplifier Best Practices

The SM7dB features a built­in active preamplifier which provides up to +28 dB of low­noise, flat, transparent gain that opti­
mizes audio performance.
Adjust the gain level on the SM7dB before adjusting levels on your interface or mixer. This approach maximizes the signal-to-
noise ratio for a cleaner, clearer sound.
In podcast or quiet vocal applications, you are more likely to need the +28 dB setting, while louder talkers or singers may only
need the +18 dB setting. For instrumental applications, you may find that the +18 dB or the bypass settings reach the ideal in­
put levels.

Using Variable Impedance Mic Preamplifiers

Select the highest available impedance setting on the external preamp when using the built-in preamp.
If you are using a low impedance setting to change the tonality for creative purposes, bypass the SM7dB's built-in preamp.
Keeping the SM7dB preamp engaged with a low-impedance setting will not yield the same changes in tone.

Microphone Placement

Speak directly into the mic, 1 to 6 inches (2.54 to 15 cm) away to block off­axis noise. For a warmer bass response, move clos­
er to the microphone. For less bass, move the microphone away from you.
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