PRESONUS ADL600 [7/22] Hookup

Owner’s Manual

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Hookup

Input Controls 2.1

2 Hookup

2.1 Input Controls

Source Select: The Source Select switch allows you to choose among all signal

sources that you have connected to the ADL 600 inputs. It patches the selected input

through the signal chain, bypassing the other two inputs. The Source Select switch

also provides a choice of four mic-input impedances: 1500Ω, 900Ω, 300Ω, and 150Ω.

Power User Tip: The output of your microphone and the input of any microphone

preamp each have a speciﬁc impedance. Measured in ohms (Ω), impedance is a way

of expressing a circuit’s opposition to a signal attempting to pass through. Lowering

or raising the ADL 600 mic-input impedance can create subtle coloring and ﬁltering

eﬀects, enabling you to get a wider variety of tonalities without using the EQ. In general,

lower input impedance can produce eﬀects that simulate a “darker,” or more “closed-in”

tone. Higher input impedance will produce a “brighter,” or more “open,” tone.

High Pass Filter: The high-pass ﬁlter’s frequency threshold can be set at 40 Hz, 80 Hz,

or 120 Hz. The slope of the ﬁlter is -12 dB/octave.

Power User Tip: A high-pass ﬁlter attenuates all frequencies below the set threshold. Use this ﬁlter,

instead of an equalizer, to remove unwanted low frequencies from your source signal.

Gain: This 8-position rotary switch provides 35 dB of gain in 5 dB increments.

Trim: This variable potentiometer (±10 dB) allows you to make ﬁne-trim adjustments

to the ﬁnal preamp stage of the ADL 600 input.