Power consumption, Po w er ing – Sound Devices 633 User Manual
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If QuickBoot is not engaged when the 633 is powered down, or if QuickBoot deactivates less than 2 hours
after powering down, the PowerSafe Battery might be depleted. To charge the PowerSafe Battery, power
the 633 on for at least one hour.
Power Consumption
The 633 is very power efficient. The amount of current it draws depends on which features are en-
abled. The following list highlights the larger current drawing functions.
1. Microphone powering - the main source of extra 633 current draw (
). 48 V Phantom can draw copious amounts of current depending on what model micro-
phone is used. Two identical phantom powered microphones draw twice as much current as
one. Microphones vary widely in their current draw depending on type and phantom voltage
applied.
2. Audio Recorder - the recorder, whether in record or playback, increases power consumption.
3. Digital Outputs - disable digital outputs in the Setup Menu when they are not needed since
they draw additional current.
4. Output drive level - higher output drive levels into multiple, low-impedance inputs increases
power consumption
5. Headphone Output circuit - high headphone output levels increase current draw.
6. LED and LCD Brightness - decrease LED and LCD brightness to extend battery runtime.
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633 User Guide and Technical Information
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