Telex Q II - FOH specifications Input Module

INPUT MODULE

The input module is essentially the same for all subgroup versions of Q2, with links selecting whether the buses feed 8 mono, 8 stereo, 4 LCR or 16 mono subgroups. Dedicated LCR input modules have 4 routing buttons marked A, B, C, and D instead of buttons 1-8.

MTR

This sub-panel preset is for calibration of the external meter output of the module.

48V

Provides phantom power for a condenser microphone, or DI box. Optional balancing transformers may be fitted on the Mic input.

-20dB (PAD)

This inserts a 20dB attenuator in circuit with the Mic input. It may be used when high-output microphones are employed, or for the use of the Mic input for Line-level signals.

GAIN

The gain control is a wide range rotary potentiometer, and is active on both Mic and Line Inputs. On Mic, the gain can be adjusted from 12 to 66dB. For Line inputs, the adjustment is from -10 to +20dB.

LINE

The LINE switch selects the signal on the line input socket to feed the channel path when it is down. In this case, the Mic signal is disconnected. The led illuminates when Line is selected.

PHASE

The PHASE REVERSE switch inverts the phase of the selected input, to allow compensation for different wiring standards.

FILTER

The Filter switch inserts a tuneable highpass filter with a roll-off of 12dB per octave into circuit after the input amplifier. This may be used to eliminate unwanted low-frequency noises such as rumble, or camera buzz.

FILTER FREQUENCY CONTROL

The frequency range of the filter is continuously variable between 20Hz to 500Hz.

Q2 OPERATIONAND MAINTENANCE MANUAL 9601 20