AMS 1073DPA Manuale d'uso - Pagina 6

Sfoglia online o scarica il pdf Manuale d'uso per Amplificatore AMS 1073DPA. AMS 1073DPA 10. Mic pre- amplifier

1073DPA & 1073DPD Mic Pre-Amplifier

Amplifier Controls

Mic Input

1200ohm (Hi-Z) or 300ohm (Lo-Z) input impedance transformer coupled stage. 48V is switchable

onto the Mic Input. Mic gain is across two class A gain stages. The signal then feeds a transformer

balanced class A output stage via a +/-10dB trim.

Line Input

20k input impedance, +26dBu peak signal level. Electronically balanced input stage. Gain from

this input is applied in the second class A gain stage and is output through the same class A

transformer coupled output stage as the Mic In.

Line Output

Phase reversal is available pre Line Output. The Line Output has a minimum +26dBu peak output

level. The peak LEDs will illuminate 3dB below clipping.

These controls also apply to the 1073DPD.

In addition the 1073DPD has an ADC converter. The input to the converter is fed from the Line

Output XLR. This ensures that the digital output signal includes the analogue class A output and

transformer colouration.

The signal passes to the ADC via a 1/4 inch jack Insert point. A balanced signal can be plugged into

the Insert jack and it will break the path from the Line Output to the ADC, substituting the Insert

signal. Tip is hot, ring is cold and sleeve is ground.

The Insert point has a peak signal level of +26dBu. This allows the user to use the ADC

independently of the Mic/Line amps or to put a piece of outboard equipment such as a compressor

between the Mic/Line amps and the ADC. With no Insert signal the signal is output as both

analogue line out and digital out enabling the analogue to be used for foldback monitoring whilst

the digital output signal with it's inherent conversion delay is being used for recording.

The ADC is set up to output 0dBFS with +26dBu at the Line Output or Insert point.

Issue 2

User Guide

Page 4