AER Alpha Manual Petunjuk Pengoperasian - Halaman 5

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Alpha

4. Summary of Operations

Connecting and starting-up

Check to ensure that the mains voltage at your

location corresponds to what is permitted for

operating the Alpha. You will find the necessary in-

formation on the sticker on the rear side besides

Voltage e.g. 230 for Europe or 115 for the USA.

Before switching on the amp, master and return

controls should be turned to zero position (as far

left as they will go) and all other controls to midd-

le position. Then make all necessary cable connec-

tions (mains, instrument and/or microphone). Now

you can switch on your Alpha with the power switch

on the rear of the amp. The green power indicator

shows that the amp is operational.

Level control

To adjust the level properly, leave the master at ze-

ro position and open up the gain of the input in use

to e.g. 11o'clock position. Make use of pad switch

and gain control to adjust various pick-up systems

resp. signal sources to the Alpha. Play hard, above

your average volume. Watch the clip indication. The

clip indicator lights up if the incoming signal is to

high. You should reduce the gain or volume con-

trol on your instrument preamp or other source to

ensure distortion-free reproduction. It just should

light up with your first hard stroke. When change

to normal playing mode it should not be seen.

Now you know:

Your pickup system addresses the Alpha's input sta-

ge properly. You can expect best possible perfor-

mance.

No clipping indication in normal paying mode -

there should be any distortion heard.

Occasional flickering of the clip indication is still ok.

Finally set the desired overall volume with the ma-

ster control.

-5-

• Note: Every indication operates according to thres-

holds. It may well happen that impulses occur that

are too quick for the indication. Always verify di-

stortion free performance aurally and possibly re-

adjust the gain/volume.

If the pickup and/or preamp signal is to low the

Alpha cannot perform at it's best.

Maximum volume cannot be achieved and the

signal to noise ratio turns bad.

Always make sure to use fully charged up batteries

in your instrument preamp. Often it is the reason

for humming, hissing noise and distortion.

Tone controls

The Alpha is equipped with a very musical 3-band

equalisation for both inputs at the same time. It is

designed to provide you with an accurate tool to

change the timbre of your instrument. Always com-

pare the natural sound of your instrument to the

amplified as reference. The colour switch activates

an additional mid-cut treble-boost filter, which brigh-

tens up the sound, makes it kind of lighter. It is par-

ticularly appropriate for finger-style techniques and

can only be made use of with input 2.

• Note: The tone controls are active and have an

impact on the internal levels of the amp.

Please keep an eye on the clip indication!

Effects

The Alpha has an integrated (internal) digital reverb

effect on board. The return control determines the

intensity of the effect (as far to the left as possible

means no effect). Furthermore, a supplementary ef-

fect device can be connected (external effect). For

this purpose, use the sockets send and return at the

rear of Alpha to connect the external device (send

to the input, return from the output of the exter-

nal effect). The intensity will then be set by the con-

trols of external effect device. A standard double

foot switch can be connected to the footswitch socket

on the rear of the amp with a stereo cable. This

switch can be used to turn the internal and exter-

nal effects on and off.