MINDPRINT DTC Spezifikationen PDF herunterladen (Seite 4)

1. The Input Section

The DTC™ has a comprehensive input section

consisting of a line-level input, an instrument

input and a microphone input. You can add

a digital input by installing the MindPrint

DI-Mod 24/96 expansion module.

1.1 Microphone input

Connections:

An XLR jack is provided on the back of the DTC™

for each channel for microphones of all types.

To accommodate condenser microphones,

48-volt phantom power can be applied from

a switch on the front panel.

Impedance is 5 kOhms.

Operation:

MIC IN: switches on the microphone input. This

switch has priority over all other input switches.

MIC GAIN: adjusts the input sensitivity of the

microphone signal within a range of +20 dB to

+72 dB.

-20 db: switches a passive pad of -20 dB before

the microphone channel preamp stage to avoid

distortion from high-output microphones.

48 V: applies phantom power to the channel.

Warning: DO NOT turn on the 48V

phantom power with unbalanced

microphones or ribbon mics,

as these can be damaged by

the phantom power!

MindPrint-DTC

High-Zensitivity™ Transformer

The complex interplay of impedance, capacitance

and induction in the input transformer is responsible

for the optimal matching of the microphone's

diaphragm to its electronics, and aids considerably in

enabling the microphone to reproduce sound in a

natural manner. MindPrint has researched these

phenomena and collaborated with the company

Hauffe to develop a new transformer.

This sophisticated transformer possesses the

advantageous sound characteristics known from older

models, but avoids their common side effects, such as

phase distortion in the treble region. It can do so

because it has such an extremely broad frequency

range (up to 127 kHz) that the phase distortion

occurs out of the range of human hearing.

Furthermore, because it has a turns ratio of 1:5 the

transformer makes life easier for the subsequent

amplifier stage, thereby reduces distortion and

makes it possible to achieve an extremely good

signal-to-noise ratio.

Inner workings of the

High-Zensitivity™ Transformer

QUESTION: At 5 kOhms, the impedance of the

microphone input is considerably higher than

normal. Why does MindPrint deviate so greatly

from the 600-Ohm standard?

ANSWER: The impedance of microphones is not a

constant but is frequency dependent. Within the

frequency range of microphones there exist certain

impedance peaks which can far exceed 1000 Ohms.

If the input impedance of a microphone preamp is

less, these peaks are damped, which in effect

automatically changes the frequency response. Since

these peaks occur especially in the treble region, the

automatic damping of low-impedance preamps leads

to a loss of brilliance. The DTC™, due to its high-

impedance design, can handle even extreme peaks

and thereby avoids losses in the highs. This especially

makes dynamic microphones sound more transparent

and natural. Condenser microphones also sound

better, since their amplifiers, which are not loaded

down as much, can operate with less distortion.

MIC IN A

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