API Audio THE BOX - Manual (Page 11)

API “The BOX” Operator’s Manual
11
2.1 Preamplifier
Line Input: Accepts balanced, low-impedance, line-level signals from the LINE INPUT
connector. The Line Input has the following features:
•
-6dB Pad
•
Polarity Inverter (phase reverse)
Note: Line Input is the default input channel source and is available when MIC is
not engaged.
Instrument Input: Accepts unbalanced, high-impedance, instrument-level signals from
the ¼" INSTRUMENT INPUT connector. The Instrument Input serves the function of
an external direct injection (DI) box and has the following features:
•
+35dB of gain (+5dB to +40dB)
Note: The MIC switch must be engaged to use this input.
Note: INSTRUMENT INPUT jack is a switching jack. The signal from the MIC INPUT
is replaced with the signal from the INSTRUMENT INPUT whenever a ¼” plug
is inserted in the INSTRUMENT INPUT jack.
Note: The pad and polarity inverter (phase reverse) do not apply to the
INSTRUMENT INPUT. If these functions are needed, the use of an external
direct injection (DI) box connected to the MIC INPUT is suggested.
The preamplifier section of the input channels provides a fully
featured input stage that’s identical to the channel preamps in the
API 1608. The preamp can accept the following input signals:
•
Microphone
•
Instrument
•
Line
Microphone Input: Accepts balanced, low-impedance, microphone-
level signals from the MIC INPUT female XLR connector on the rear
panel. The preamplifier has the following features:
•
+35dB of gain (+30dB to +65dB)
•
-20 dB Pad
•
Polarity Inverter (phase reverse)
•
48v Phantom Power
Note: The MIC switch must be engaged to use this input.
Note: The signal from the MIC INPUT is replaced with the signal
from the Instrument Input when a 1/4” plug is inserted in
the Instrument Input jack.