andreus A-22 Manual de operação - Página 6

Procurar online ou descarregar pdf Manual de operação para Amplificador andreus A-22. andreus A-22 13 páginas. Head and combo

Front Panel

1. INPUT JACKS –

(labeled HIGH and LOW). For maximum overdrive, use the HIGH jack. For a

more usable range of clean and crunch tones, try the LOW jack, especially with

high output pickups or noisy pedal boards. The HIGH jack has 9db more gain

than the LOW jack.

2. VOLUME CONTROL –

or "Input Volume". It is used in conjunction with the MASTER VOLUME

CONTROL. When the MASTER VOLUME is turned to 10, the VOLUME

CONTROL acts as a standard volume control as if the amp did not have a

MASTER VOLUME CONTROL. That is, when the volume control is turned up,

the amp will give you a nice warm overdriven tone at its maximum volume.

When the MASTER VOLUME is turned lower, you can still get nice overdrive

tones at lower output volume. By using the HIGH or LOW input jack and

adjusting the VOLUME and MASTER VOLUME controls to various positions,

you can fine tune the amount of crunch and overdrive desired at different

volume levels. If you find that you are always setting this control below 5 or 6,

try changing the V1 preamp tube to a 12AU7 (ECC82). This will result in lower

gain and give you a wider range of clean and crunch tones on the VOLUME

control. See the section on Tube Replacement for more details.

3. TREBLE CONTROL -

midrange frequencies. It is most effective when the input volume setting is low.

Use the PRESENCE control to dial in the treble content of overdriven signals

(when the Input VOLUME is turned up).

4. BASS CONTROL –

midrange frequencies.

5. PRESENCE CONTROL –

treble frequencies from your signal and is especially effective when the Input

VOLUME is turned up high and he Master Volume is set to a low level. Crank it

up for a little more bite or back it off for a warmer, smoother tone. By carefully

adjusting the TREBLE and PRESENCE controls, you can vary the balance of

high frequencies for both clean and overdriven tones.

For maximum versatility, we have provided two input jacks

This control could also be labeled "Preamp Gain"

This control varies the amount of treble and upper

This control varies the amount of bass and lower

This control can be used to reduce unwanted