Using Phantom Power; Adjusting The Input Level - Tascam DR-40 Reference Manual

Using phantom power

When the EXT IN switch on the left side panel is set to
MIC+PHANTOM, phantom power (+24V or +48V) is turned on
and sent to the connected mics.
CAUTION
• Confirm that phantom power is OFF before connecting a
line level device to a EXT MIC/LINE IN jack. If you connect
a line level device while phantom power is being supplied,
that device and this unit could be damaged.
• Do not connect or disconnect mics with the EXT MIC/LINE
IN jacks when the phantom power switch is set to ON.
Doing so could cause a loud noise and might damage this
unit and connected equipment.
• Set the phantom power switch to ON only when using
a condenser microphone that requires phantom power.
Turning phantom power on when a dynamic mic or other
mic that does not require it is connected could damage this
unit and connected equipment.
• When using condenser mics that require phantom power
and dynamic mics together, be sure to use balanced
dynamic mics. Unbalanced dynamic mics cannot be used
when phantom power is enabled.
• Supplying phantom power to some types of ribbon
microphones could break them. Do not supply phantom
power to a ribbon microphone if you are in doubt.
• When using USB bus power, the unit might not be able to
supply phantom power depending on the computer. In this
case, use a TASCAM PS-P515U AC adaptor (sold separately).
• Some condenser microphones will not operate when
phantom power is set to +24V.
• Do not connect or disconnect the USB cable connected
to the USB port when using phantom power. Even when
batteries are loaded in this unit, the power supply could be
interrupted, resulting in the loss of or damage to data when
recording.

Adjusting the input level

Before starting recording, the input level should be adjusted
to prevent the recorded sounds or signals from being
distorted due to excessively large input signals or from being
inaudible due to excessively low input signals compared to
noise.
In addition to manual adjustment, the unit has the following
three level adjustment functions: peak reduction, automatic
level control, and limiter. Any of these can be used as required.
TIP
In addition to adjusting the INPUT level, try changing the
distance and angle between the microphone and the sound
4 – Recording
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TASCAM DR-40