Presonus Audio electronic ADl 600 2 CONTROLS & CONNECTIONS , 6

2 CONTROLS & CONNECTIONS

The front panel of the ADL 600 is laid out so that if you split the front panel

down the middle the controls and metering for channel 1 are on the left hand

side and the controls and metering for channel 2 are on the right hand side.

The following is a description of the controls for each channel:

INPUT: Selects the input source (Instrument, Line, or Microphone) The

microphone input has four different input impedance values to select from (1500,

900, 300 and 150 ohms). As the ADL 600’s impedance is lowered, different

filtering effects can result delivering a tailored sound for a particular application.

When using the Line input, the following microphone preamplifier features are

bypassed: +48V, -20dB PAD and input impedance.

HP FILT: Three position rotary switch to select the frequency for the HIGH PASS

FILTER (40Hz, 80Hz and 120Hz). When the FILTER switch is engaged all

frequencies below the selected HP FILT setting are attenuated (dropped) by

12dB. This filter can be handy in live and studio applications. For example, a high

pass filter can help to reduce the “boominess” or “muddiness” of a vocal and

improve the overall clarity.

GAIN: Eight-position industrial grade rotary switch providing 35dB of gain in 5dB

steps. TRIM: Variable potentiometer (+/-10dB) to offer fine trim adjustment to the

final stage of the ADL 600.

INSTRUMENT: ¼” TS connector. When an instrument is plugged into the

instrument input, the microphone preamplifier is bypassed and the ADL 600

becomes an active instrument preamplifier.