Mackie TT24 Manuel du propriétaire télécharger pdf (Page 12)

TT24 DIGITAL LIVE CONSOLE

Ch 3: Console Surface Controls

3.1.1 LINE

Push the LINE button down to access the 1/4-inch

line input and up for the XLR mic input. For permanent

installations that require alternate access to mic and

line inputs in the same channel, connect both inputs

and toggle between them via the LINE button.

3.1.2 48 V Phantom Power

Push the 48V button down to supply 48 VDC phantom

power, required by most condenser mics, to the chan-

nel’s XLR mic input. The TT24 can provide phantom

power to all 24 mic inputs simultaneously. Push the but-

ton up for dynamic mics that do not require phantom

power. The line input is not affected by the 48V phantom

power switch.

3.1.3 GAIN

The GAIN knob controls the analog amplier that ad-

justs the input sensitivity of the mic or line input signal.

The gain range of the mic input is 0–60 dB; the line’s

range is -20 to +40 dB. A unity gain indication for the

line input appears at the 10:00 position (unity gain for

the mic input is fully counterclockwise). Dual-concen-

tric labels surround the knob indicating the appropriate

levels (mic outside, line inside).

3.1.4 OL and SIG

The green SIG LED lights when the selected mic/line

signal exceeds -15 dBu. The red OL LED lights when the

signal is 3 dB below clipping the ADC. The SIG and OL

LEDs remain lit only while the signal level is above their

corresponding thresholds.

3.1.5 V-Pot

The V-Pot displays and controls one of

the following functions at a time: pan,

HPF, Aux send levels, Aux pan (for linked

Aux sends), digital trim, and channel

metering. The function is assigned from

the V-POT CONTROL area.

The V-Pot has 15 LEDs in a ring from

7:00 to 5:00. They light clockwise as the

signal level increases unless otherwise

noted. The V-Pot also has a bottom red

LED used to indicate different functions

including meter clip, default settings,

on/off, etc. The 12:00 LED is also sometimes used to

indicate a nominal setting (i.e., pan set to center). Each

function’s specic behavior is discussed in V-Pot Control

Area on page 14.

LINE

ELE

LINE

-Pot

knob

48 V

phantom

ower butto

Mic/Line

level butto

Gain

knob

Overload

Signal

Select

button

Solo

button

Channel

fader

Mute

button

Bank/

Channel

description

LINE

ELE

LINE

V-Pot

knob

48 V

phantom

ower

utto

Mic/Line

level button

Gain

knob

Overload

LED

Signal

LED

Select

button

Solo

button

Channel

fader

Mute

button

Bank/

Channel

description

Figure 3-1 Channel strip: top half (left, bottom half (right)

Bottom LED

12:00 LED

Figure 3-2 V-Pot

The TT24 console surface is organized into the follow-

ing areas, each of which is discussed in this chapter:

• Channel Strips

• QuickMix

• Bank Select

• V-Pot Control

• Utility

• Flex-Groups and Master

• Solo

3.1 Channel Strip

The TT24 has 24 channel strips bounded at the bot-

tom by a fader and at the top by a LINE switch. Each

channel strip can control one input at a time from one

of four banks.

The top section of each channel strip (left of Figure

3-1) has the following analog controls that apply only

to the Analog bank: LINE mic/line input switch, 48V

phantom power switch, GAIN mic/line gain control, and

OL (overload) and SIG signal LEDs.

Below that, each channel has a virtual potentiometer

(V-Pot), MUTE, SELECT, and SOLO buttons, and a

100mm motorized fader (right of Figure 3-1).

The V-Pot knob, which performs multiple channel

functions one at a time, consists of a push-button rotary

encoder surrounded by a 15-segment LED ring (see

V-Pot Control Area on page 14).

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Mackie TT24 Manuel du propriétaire Page 12

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