Руководство Пользователя для Crown i-t4000

When first turning on your amplifier, follow the procedures in the 
Quick-Start Guide on page 4 (stereo) or page 5 (bridge-mono).

If you ever need to make any wiring or installation changes, don’t for-
get to disconnect the power cord.

For help with determining your system’s optimum gain structure (sig-
nal levels) please refer to the Crown Amplifier Application Guide, 
available online at www.crownaudio.com.

Your amplifier is protected from internal and external faults, but you 
should still take the following precautions for optimum performance 
and safety:

1.

Before use, your amplifier first must be configured for proper 
operation, including input and output wiring hookup. Improper 
wiring can result in serious operating difficulties. For information 
on wiring and configuration, please consult the Setup section of 
this manual or, for advanced setup techniques, consult Crown’s 
Amplifier Application Guide available online at 
www.crownaudio.com.

It's wise to avoid clipping the amplifier signal. Not only does clipping 
sound bad, it can damage high-frequency drivers. To prevent clipping, 
use IQwic™ or System Architect software to enable or display the peak 
voltage limiter and average power limiter in your amplifier’s built-in 
DSP. That way, no matter how strong a signal your mixer produces, the 
amplifier output will not clip. Set the limiter threshold so that mixer 
signals above 0 dB or 0 VU on the mixer meters do not quite drive the 
amplifier into clipping.

Also, avoid sending strong subsonic signals to the amplifier. High-
level, low-frequency signals from breath pops or dropped micro-
phones can blow out drivers. To prevent subsonic signals, use one of 
these methods:

• Insert a highpass filter between mixer output and amplifier input (or 
between mixer and limiter). 

• Use the I-Tech’s onboard DSP to set up a highpass filters.

• Switch in highpass filters at your mixer. Set the filter to as high a fre-
quency as possible that does not affect your program. For example, try 
35 Hz for music and 75 Hz for speech. On each mixer input channel, 
set the filter frequency just below the lowest fundamental frequency of 
that channel's instrument.

2.

Use care when making connections, selecting signal sources and 

controlling the output level. The load you save may be your own!

3.

Do not short the ground lead of an output cable to the input signal 
ground. This may form a ground loop and cause oscillations.

5.

Tampering with the circuitry, or making unauthorized circuit 

changes may be hazardous and invalidates all agency listings.

6.

Do not operate the amplifier with the red Clip LEDs constantly 
flashing. 

7.

Do not overdrive the mixer, which will cause clipped signal to be 

sent to the amplifier. Such signals will be reproduced with 
extreme accuracy, and loudspeaker damage may result. 

8.

Do not operate the amplifier with less than the rated load imped-

ance. Due to the amplifier’s output protection, such a configura-
tion may result in premature clipping and speaker damage.