AER combi-SUB 12 Manuel de l'utilisateur - Page 6

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1. Controls and Connections

4. Starting up

4.1 Cabling and switching on

Connect your line-out or premaster-out signal of

of the unit.

Make sure crossover position is at 100Hz (left turn),

notch filter is in off position (button stands out)

and phase switch is in normal position button

stands out).

4.2 Level adjustment

By setting the level correctly we mean the signal

level in one or several devices in a signal chain is

neither too high nor too low. This applies equally

to all circuits in a complete circuit design (EQs,

preamps etc.)

Consequently, care must be taken that no part of

the circuit is overloaded or that distortion is unin-

tentionally added to the signal.

We have carefully designed the circuit to achieve

this objective whilst also providing controls for

'manual' intervention.

your source (amp, desk)

to the input of the

comb-SUB.

The relevant specs

and safety symbols are

printed on the rear side

As soon as you raise the gain level the combi-SUB

will be heard. It offers a wide range of features to

enhance and define low-end and avoid feedback:

ground-lift, adjustable crossover, notch-filter and

phase-inversion.

A) combi-SUB 12 and 15

as extension to an amp:

A line-out signal is unfiltered and full range. This

is why you can adjust the range the combi-SUB

covers individually to adjust the amount of bass and

midrange the combi-SUB should add.

The phase switch inverts the signal phase by 180°.

Make sure your amp and the combi-SUB are in

phase, than you will hear the low frequencies full

and strong.

According to the overall volume you desire you

may encounter resonance/feedback problems that

can be actively addressed by making use of the

Notch Filter. Witch it on and identify the resonance

frequency by turning the frequency potentiometer.

B) combi-Sub 15

as subwoofer to AS 281:

Besides the above

You may use a 2.1 setup:

Two AS 281 plus one combi-SUB 15

- connect your left and right signal from your source

(desk) to left and right AS 281 inputs and one AS

281 link out to feed the signal to the combi-SUB 15.

In case you have a full 2.2 setup:

Two AS 281 and 2 combi-Subs

- connect left and right to the sub left and right and

feed the signal through to the AS 281.

Make use of phase, crossover and notch filter as

explained above.

As a small , easy-to-use PA solution it is

ideal for small clubs, jazz and acoustic

concerts and art events.