60 Bedrock SMxx operating manual © Bedrock Audio BV, 2019
The following microphones are shipped standard with each of the SMxx device models:
• SM30: BAMT2
• SM50: BAMT2
• SM90: BAMT1-MP201 (BAMT1 with MP201 capsule)
The BAMT1-MP309 combination is a high-end class 2 / type 2 alternative sold with the
SM30 and SM50 devices, for specific applications where there is a requirement to have
periodic tests done by an accredited laboratory according to IEC-61672-3. Many accred-
ited labs require the microphone capsule to be removable (which is not the case with the
BAMT2).
Always make sure that the microphone selected here matches the microphone mounted
on the device. The option “XLR electric in” is used when no microphone is used, but the
signal come from an external source into the XLR connector. This option sets the overload/
underrange settings to the limits of the internal preamp electronics, and sets all free-field/
diffuse field corrections to zero.
If you plan to use a third-party microphone with your SMxx, you will need to obtain a
so-called “mic.ini” file for that particular microphone. Please contact support if you need
access to third-pary microphone data (if available).
The microphone can be configured for “Free field” or “Diffuse field” conditions. The
BAMT1 and BAMT2 microphones are free field microphones by design; when setting the
device to “Diffuse field,” the appropriate corrections are applied.
The settings menu also features a screen that lets you configure the power saving settings
of the device.
Power saving settings (backlight time-out and display brightness).Note that backlight bright-
ness can not be set on some Bedrock SM50 (devices with serial numbers starting with SM50A).
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