Руководство Пользователя для Crown i-t4000

Your Crown amplifier provides extensive pro-
tection and diagnostic capabilities, including 
thermal level control, fault indicators, high-
pass filtering, DC protect, AC under/over volt-
age protection, inrush limiting, and variable-
speed fans.

If the amplifier becomes too hot for safe opera-
tion, the TLC will engage the input compressor 
and the clip LED will illuminate. By compress-
ing the input, the amplifier will not generate as 
much heat and will have a chance to cool down. 
The degree of compression is proportional to 
the amount of overheating. This feature allows 
the show to go on, rather than having the 
amplifier shut down, and only occurs in 
extreme situations.

If the current draw of the amplifier exceeds safe 
limits, this breaker automatically disconnects 
the power supply from the AC mains.

Thanks to its global power supply, the I-Tech 
amplifier works anywhere in the world. There’s 
no need to reset an AC mains voltage switch, 
and no need to order a special model. The amp 
will work and meet all specs on 100V - 
240VAC, 50/60 Hz.

Crown’s Switching Power Supply minimizes the 
amplifier’s weight.

Typical non-switching power supplies require 
large, heavy transformers in order to produce 
the required power at the output stage. These 
transformers must be large to operate at 50 to 
60 Hz (standard AC supplied by the power 
company).

By contrast, switching power supplies can 
operate with a much smaller (and lighter) trans-
former because they first convert the AC up to a 
much higher frequency, thereby reducing 
waste. 

Power Factor Correction (PFC) controls how 
your amplifier draws current from the AC 
mains. Instead of drawing high-magnitude cur-
rent spikes that reduce the capacity of your 

power distro (and couple noise into other sys-
tem components), PFC draws a smooth and 
quiet current waveform that is in phase with the 
mains voltage waveform. PFC allows you to 
reduce the size and weight of your power distri-
bution and improve the performance of your 
signal processors. 

Class I (BCA, Balanced Current Amplifier) 
Interleave technology allows high levels of 
power output without all the associated heat 
found in a conventional amplifier. This highly 
efficient design also provides accurate, uncol-
ored sound with very low distortion and a high 
damping factor for tight, clean bass response. 
And it can deliver more power to reactive loads 
than conventional dissipative designs (com-
fortably driving the latest high-technology 
transducers). Class I also reduces current draw 
of the AC mains, providing energy conserva-
tion. 

The labels on the rear panel are color coded to 
group similar functions under common colors.