Aurora Audio GTM-822 Spécifications

GTM 822 HandbookCongratulations on your purchase of a GTM 822 console. I feel confident that you will find that its many features and great “vintage”

There are external adjustments accessible on each channel via multi-turn trim pots above and below the stepped input gain control at the top of each c

8. More hints on using the GTM 822!My original design concept for the GTM was that it should be the CORE of a small, professional recording and mix do

A rough mix can be made from the channels to the stereo output so that the user can listen to the signals going to the workstation and send a stereo c

The above illustration represents how the GTM822 can be used as the CORE of a recording studio set up. In tracking mode, signals from the microphone p

Connecting the Talk-back facility :-The external talk-back microphone and “press to talk” switch are connected via the male 9 pin D sub connector on t

Connecting an expansion unit to the master unit :-When connector expansion units to each other, or from an expansion unit into the master unit, the si

When connecting unbalanced equipment to the GTM822's audio inputs, connect the wiring as follows :-XLR inputs :- Connect the signal's hot t

VU Meter range :- Standard VU points from -20VU to +3VU where 0VU = +4dBu = 1.228 vac. Front panel trimpot to align the 0VU point.Input headroom :- A

Aurora Audio International warrants this GTM822 unit against defects in workmanship for a period of one year and parts for a period of one year from r

All signal paths on the GTM (except the headphone jack socket on the front panel) are balanced line level (0VU = +4dBu = 1.228 volts ac). The XLR’s ar

The VU meter measures the signal level at the pre-fade insertion return point. This means that, with nothing plugged into the insertion, it will measu

4. The Monitor/Meter section The VU meters, phase meter, monitor output and headphone output all follow the monitor source selection switch. The sourc

As can be seen in the chart above, the power dissipated into headphones depends on their impedance. For a given output voltage… in this case +20dBu =

In every case, the headphone level control should be set to zero before the headphones are plugged in and then gradually increased to a comfortable li

The phase can usually be corrected by means of the phase switch on any external microphone pre-amplifier, a feature of the work station software, or,

6. Adding extra channelsChannels can be added, eight at a time, by connecting add-on units to the GTM master unit. The add-on units are basically iden

If all the studio equipment is bonded to a clean technical earth there is less likelihood of any difference in potential = ground hum, occurring. In t