Tube-tech MP2A Microphone Preamplifier and DI Manuel d'utilisateur télécharger pdf

Lydkraft ApS

Mose Allé 20, DK 2610 Rødovre

Denmark

TUBE-TECH MP 2A

microphone pre-amplifier

Description

The TUBE-TECH microphone preamplifier MP 2A is a two-channel microphone and

instrument preamplifier.

Each amplifier consists of a microphone input transformer (with a static screen) with a

step-up of +10 dB, a dual tube preamplifier with a stepped gain (2dB/step passive and

10dB passiv/active), an output amplifier with two dual tubes in push-pull and an output

transformer (with a static screen).

The microphone inputs are provided with a switchable -20dB attenuation PAD and

switchable +48 V PHANTOM-power, three selectable input IMPEDANCEs (600,

1200,2400 Ohm), and a PHASE reversal switch.

The microphone input is capable of accepting levels of up to +6 dBu (1.55V) at 40 Hz

without the PAD and +26 dBu (15.5V) at 40 Hz with the PAD, so the microphone input

can be used as a unity gain line amplifier.

The high impedance DI input is unbalanced and placed in the circuit directly after the

input transformer. The gain range for this input is 0dB to +60dB. When in use, the

microphone input is disabled.

A high pass filter (LOW CUT) for the microphone and the DI input is switchable

between off, 20Hz and 40Hz. It is advisable to use this filter in environments with high

levels of very low frequency disturbances.

Gain errors between the two channels are less than 0.5 dB at any gain setting.

The two amplifier circuits are completely separated and the cross talk between

channels is below -60 dB ranging from 20 Hz to 20 kHz.

An Overload indication (RED LED) lights up when the output level exceeds

approximately +26 dBu.

(130530)

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Lydkraft ApS Mose Allé 20, DK 2610 Rødovre Denmark 1 TUBE-TECH MP 2A microphone pre-amplifier Description The TUBE-TECH microphone pre

Lydkraft ApS Mose Allé 20, DK 2610 Rødovre Denmark 2 CONTROLS: GAIN: The gain switches have a range from +10dB to +70dB. Coarse gain 10dB/steps

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Tube-tech MP2A Microphone Preamplifier and DI Manuel d'utilisateur