Sound-devices 552 User Manual download pdf (Page 21)

552 User Guide and Technical Information

When possible, attempt to equalize at the sound source with microphone selection, placement,

windscreens, and onboard microphone ﬁltering. Many microphones have on-board high pass ﬁlters.

Use the high-pass ﬁlters on the 552 in conjunction with the microphone’s ﬁlter to increase the ﬁlter’s

slope.

The ﬁlter can be removed from the circuit completely by moving the high-pass ﬁlter control to the

full counter-clockwise (detented) position. The high-pass ﬁlter potentiometer can be adjusted easily

and then recessed to hide it from the mixing surface.

Pan Control

The pop-up knob control routes inputs to the left and right output buses. For most applications, a

channel will be panned either hard-left, hard-right, or center. The pan pot has a detent in the center

position. After setting the pan, the pan control can be recessed to hide it from the mixing surface dur-

ing normal operation.

Input Polarity

The polarity (sometimes referred to as a phase inversion) of inputs 2 and 4 can be reversed. Polarity

reversal is used to compensate for incorrectly wired balanced cables, to prevent signal cancellation

when a source is dual-miked from opposite directions, or to reverse left/right with MS microphones.

To toggle between normal and reverse polarity, activate the respective input’s PFL then press the

Battery Check Button. When the front panel Input Polarity LED is lit, the polarity is reversed on that

channel.

1) Hold the Input’s PFL.

2) Press the Battery Check Button.

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Sound-devices 552 User Manual Page 21