AER amp one User Manual - Page 7

Browse online or download pdf User Manual for Amplifier AER amp one. AER amp one 12 pages. Aer bottom-line series amp one user manual

Print Page

5. Functional Characteristics

5.1 Mute

The mute switch turns the appliance to mute as requi-

red. The function can also be activated by a standard

footswitch (on/off switch).

5.2 Tone Control Networks

As with all AER products, the amp three is fitted with

an excellent basic tone thanks to the selection of com-

ponents, circuits and pre-equalizations. In addition, va-

rious equalizer networks enable you to adjust the ba-

sic tone to suit your personal requirements. With amp

three you can activate fixed filters (colour, bass boost)

and two adjustable filter networks (equalizer and tone

balance).

Note:

Basically, instruments reproduce their typical frequency

spectrum, but this is not necessarily what you want, or

there are some sounds you want, which the instrument

doesn't „naturally" reproduce or can play, but not in

the appropriate ratio. There are all kinds of electronics

can make these things possible, but in certain circum-

stances the price you have to pay can be a bad signal-

to-noise ratio.

In this case the advice is quite simple: in general, go

easy with the many equalizer possibilities. Sometimes

less is more!

5.2.1 Colour

The colour switch activates a fixed, pre-set contouring

„voicing"-filter, which reduces mids slightly at 360 Hz

and strongly emphasises trebles at 3.8 KHz.

5.2.2 Bass Boost

The bass boost strengthens the low frequencies at

55Hz. This gives the amp three enormous sound pres-

sure, so that it produces rich bass tones both when it is

placed on the ground and on a stand.

5.2.3 Parametric Equalizer

With the amp three 3-band equalizer, bass and treb-

le are fixed, the sensitive mids band can be adjusted

in the frequency range of 200 Hz to 2 kHz. The band-

width is adjustable between 1 octave resp. 1.6 octaves.

It remains constant whatever the selected frequency.

Note:

A parametric equalizer is a filter network in which all

the parameters of a filter (amplitude/level i.e. increase

or decrease; frequency i.e. tone pitch, Q-factor/band-

width i.e. filter quality) are adjustable.

This means that increase and decrease, position and

width of the frequency range can be adjusted inde-

pendently and over a wide range.

In this way, the parametric equalizer enables you to

equalize frequency response errors – hence the name

equalizer – and to combat feedback and resonance ri-

ses. On the other hand you can use it as a flexible tool

to change specific tones.

5.2.4 Tone balance –

How does it work?

The tone balance is served by the

two controls balance and intensity.

The intensity control determines the

degree to which bass and treble are

increased simultaneously and are

mixed to the original signal (paral-

lel mode). If the intensity control is

far over to the left (min), then the

original signal is not influenced (flat). (see fig. above)

Turning the control to the right (--> mid --> max) mixes

the relevant bass and treble mix to the original signal.

The balance control influences the relationship bet-

ween bass and treble. If it is in middle setting, bass and

treble are balanced. The tone balance is now in equati-

on. (siehe Fig. 1)

max

mid

min

100 Hz

balance in middle

(flat)

frequency

1 kHz

10 kHz

Fig. 1