User manual

ManualsBrandsApex N.V. ManualsMusical equipmentArgos

GENERAL CONNECTIONS

• Connect the LINE- or MASTER-output of the pre-amplifier or the mixing desk to the LINE-

input of the ARGOS.

• Connect the LINE-output of the ARGOS to the input of the power amplifier or if an active

amplification system is used, to the input of the electronic crossover.

MIC (MICROPHONE-BASED OPERATION) :

When to use ?

• When the use of a measuring microphone is desirable.

• When the maximum admissible sound level is > 80 dBA.

How to calibrate the ARGOS?

• Connect the measuring microphone to the MIC XLR-input (15) of the ARGOS.

In these cases where the cable is too short , it can be lengthened by means of a normal

microphone XLR-cable. The ARGOS will not work properly when another then the included

microphone is connected.

• Automatically the SLOW operation will be set when the microphone operation mode is se-

lected independant of the position of the FAST / SLOW-switch (3).

• Place the microphone on a central location (for instance in the middle above the dance floor).

• Slide the mode selection switch (2) to the lowest position so the MIC-indicator (12) is lit.

• Adjust the dBA-level trimmer (1) to its maximum by turning it fully clockwise.

• Adjust the volume on the amplifier to minimum.

• Slide the NORMAL / PINK NOISE switch (4) to the PINK NOISE-position (lowest position).

• Use a sound level meter set to “dBA” and “slow or average response” to measure the sound

pressure level at an appropriate position in the room.

• Adjust the volume on the amplifier to about 10 dBA above the desired or allowed sound level,

whichever is lower.

• Adjust the dBA-level trimmer (1) slowly until the sound level meter indicates the maximum

allowed sound level. Allow the ARGOS to settle on the new gain reduction after adjusting the

dBA-level trimmer. The yellow LED’s in the middle of the sound level LED-bar (6) should

illuminate and the gain reduction LED-bar should give an indication that the ARGOS is

reducing the gain.

• Slide the NORMAL / PINK NOISE switch (4) back to NORMAL (upper position).

• Mount the frontpanel coverplate and seal it. The ARGOS is ready for use.

LS (LOUDSPEAKER-BASED OPERATION) :

When to use ?

• When only 1 amplifier is used and the maximum admissible sound level is < 80dBA.

How to calibrate the ARGOS ?

• Connect the loudspeaker outputs of the amplifier to the corresponding Loudspeaker-

inputs at the rearpanel of the ARGOS. Make sure that the positive outputs of the amplifier

(marked “+” or red) are connected to the red inputs (marked "+") on the ARGOS. You don’t

have to worry for possible ground loops since the Loudspeaker-inputs on the ARGOS are

floating (isolated by transformers in the ARGOS).

• The microphone should not be connected.

• Slide the mode selection switch (2) to the middle position so the LS-indicator (11) is lit.

• Slide the FAST / SLOW-switch (3) to the desired position. This switch should be set to FAST if

the level shouldn't even exceed the threshold for a short time. However, the SLOW mode

is much more pleasant to listen to because of the smooth operation.

ARGOS - USER MANUAL

Installation instructions.