AC-AUDIO Tube G52 Pro Посібник користувача - Сторінка 8

Переглянути онлайн або завантажити pdf Посібник користувача для Підсилювач AC-AUDIO Tube G52 Pro. AC-AUDIO Tube G52 Pro 11 сторінок. 2 channel tube preamp

Друкувати сторінку

5. OPERATION

5.1 Input Source Selection.

The input source and phantom power selection are controlled on a four position rotary

switch. The selections are:

MIC +48V: For condenser mics that require 48V phantom power

MIC: For most dynamic or ribbon mics

LINE: Line inputs

INST: Front panel Instrument inputs

CAUTION: Please connect a microphone you need before phantom power applied. Do

not connect or separate mic and equipment when phantom power applied. Furthermore,

Adjust the Monitor/speaker for silent state before phantom power applied. Please wait for

about one minute after phantom power applied, then regulate the output amplify, to

ensure the system can be stable before this.

5.2 Mic Gain.

The Mic Gain control sets the level of the microphone input signal prior to the Input

Gain control. There are 4-switched level positions: -20, 0, +20 and +40dB, with a further

+/- 20dB available on the Input Gain control.

For normal operation it is recommended to keep the Mic Gain setting at the +40dB

position, with any fine adjustments to the input signal level made by either boosting or

reducing the Input Gain control. Keeping the Mic Gain at its maximum setting (+40dB)

can help to keep the noise figures as low as possible. In extreme cases, high-level signal

sources such as close-mic'd drums, it may be necessary to reduce the Mic Gain position

to prevent input overload.

5.3 Input Gain.

The Input Gain control sets the level of the signal is variable between -20dB and +20dB.

This allows a wide range of signals to be fed into the equipment, and also allows the valve

stages to be driven to a variable degree. Each channel of the equipment has a triode valve

stage positioned between the input circuit and the compression stage.