APart CHAMP-2 Руководство по эксплуатации онлайн [6/16] 759211

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What is APC ?

APC is one of the most intelligent amplier protection circuits ever designed, simply

because it does the job without interfering with the typical dynamic character of

music. APC allows you to fully exploit the potential of the amplier, maintaining high

power reserves and thus producing high, clean power.

It is a common misunderstanding that high power ampliers will overload or destroy

lower power speakers, the opposite is true. You can easily destroy a 500 Watt rated

speaker with a simple 50 watt power amplier ! Why ? In order to produce a low tone,

such as a kick drum or bass guitar, you need about 80 % or more of an amplier’s

power. Because distortion is less audible in low frequencies, you would want to

increase the level more than the amplier can supply. This causes low frequency

distortion which causes high frequency harmonics. These harmonics contain more

high frequency energy than the high frequency speaker can deal with. Result: harsh

distortion and sudden heat rise in the high frequency speaker’s voice coil. After a

short while, the high power speaker may burn out.

Conclusion: don’t punish your speakers with weak ampliers. Set the APC control

to a power level equal to your speaker’s RMS input power and avoid hitting the clip

limiter !