Dynatech TD10000Q Инструкции пользователя - Страница 10

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AMPLIFIER

Precautions

Introduction

Amplifier Gain

The TD-10000Q amplifier feature adjustable input gain. This versatility enables the

amplifier to accommodate a multitude of system configurations with various input

sources and speaker layouts. Amplifier gain is set globally for all channels. The

range is +23dB to +44dB in 3dB steps. Individual channel fine level adjustment is

available using the potentiometers on the front panel.

The unique adjustable input gain feature of the TD-10000Q makes it easier to attain

the optimum balance between headroom and signal-to-noise ratio in the signal path.

A weak signal at the input might require the gain to be raised in order to achieve

maximum output power with the lowest signal-to-noise ratio. A "hot" input signal,

however, would require a lowering of the gain to avoid sending the amplifier into

Voltage or Current clipping.

Individual channel gain (level) may be adjusted using the potentiometers located on

the front panel. Range is from 0dB to - infinity.



If the level control is used to attenuate to a lower level than the headroom



relative to input sensitivity AND the amplifier input is driven into clip, there

NOTE

is a danger of clipping the input stage before the current or voltage peak

limiters are activated.

Sensitivity is defined as how many Volts (rms) or dBu (referred to 0.775 Vrm) are

required to achieve full (maximum) output power. As the output power varies with the

load impedance, 4 ohms is usually the common reference. Since TD-10000Q

amplifier is capable of providing multiple maximum output power levels through use

of the VPL feature, many sensitivity calculations may be required for a single

amplifier.

Voltage Peak Limiter (VPL) is a unique feature in TD10000Q amplifier. It is used to

select the maximum power available on each output channel. VPL levels are set

using the rear-panel DIP-switches; eight level positions are offered.

TD10000Q

Front Panel

Rear Panel

Operation and Performance