Crown Audio I-T5000 HD 3Operation, I-TechHD Series Power Amplifiers, page, A. Cooling Vents

I-Tech HD Series Power Amplifiers

3Operation

3.4Front Panel Controls and Indicators

Many of these functions can be disabled using Blackout Mode (a selection in the Advanced Menu, Section 4.2.3).

A. Cooling Vents

Front-to-rear forced airfl ow through foam dust fi lter

B. LCD Control Screen

Integrated LCD with white backlight, controls amplifi er setup and operation.

The LCD Control Screen and its controls let the user adjust the amplifi er’s attenuation and muting, confi gure the amp, set up and view error monitoring (such as temperature and load supervision), and recall DSP presets. The presets allow the user to quickly reconfi gure the amp for various applications.

C.Power Switch

Push-on/push-off switch glows green when AC power is present at the power cord and the amplifi er circuit breaker is in the “on” position.

D.USB 2.0 Connector

Accepts a USB drive to transfer presets from the drive to the amplifi er DSP, and vice versa.

E.Fault Indicator

Red LED, one per channel, fl ashes when the amplifi er output channel has stopped operating. Usually this means that the amplifi er must be serviced.

F.Thermal Indicator

Red LED, one per channel, illuminates when the channel has shut down due to thermal stress or overload.

G.Clip Indicator

Red LED, one per channel, illuminates when the channel’s output signal reaches the onset of audible clipping. The Clip Indicator also will illuminate during Thermal Level Control (TLC) limiting. The Clip Indicator can be turned of during Blackout mode.

H. Level Controls (Encoders)

Speed-sensitive, 0.5 dB steps, range 0 to –100 dB. These two knobs affect the Channel-1 and Channel-2 output levels. They also select Menu items and adjust parameter values that are displayed on the LCD control screen.

I. Menu/Exit Button

“Menu” enters the main menu. “Exit” leaves the menu.

J. Prev Button

Selects the previous item in the menu.

K. Next Button

Selects the next item in the menu.

L. Signal Indicators

These can be disabled during Blackout mode. Three green LEDS per channel indicate the amplifi er’s input and output signal levels. From top to bottom the LEDs are

–10 dB: amplifi er output is 10 dB below clipping.

–20 dB: amplifi er output is 20 dB below clipping.

Signal: selected input signal is above –40 dBu.

M. Ready Indicator

Green LED, one per channel, illuminates when the channel is initialized and ready to produce audio output. Indicator is off when the channel is set to standby mode via System Architect or in Blackout mode.

N.Power Indicator

Blue LED indicates amplifi er has been turned on and AC power is available. The LED will fl ash when the AC line voltage is 15% above or below the nominal rated range. This indicator can be turned off in Blackout mode.

O.Data Indicator

Yellow LED indicates network data activity. Data indicator fl ashes only when the amplifi er is polled for data, or is polled to see whether it is online. This indicator can be turned off in Blackout mode.

PBridge Mode Indicator

Yellow LED illuminates when the amplifi er is set to Bridge-Mono mode.

Figure 3.1 Front Panel Controls and Indicators

page 12 Operation Manual