Community MVP12M Посібник користувача - Сторінка 9

Переглянути онлайн або завантажити pdf Посібник користувача для Акустична система Community MVP12M. Community MVP12M 20 сторінок. Mvp series ii

Community Professional Loudspeakers

MVP™ Series II Owner's Manual

What Amplifier Should You Use?

There are several things to keep in mind when selecting an amplifier. First, you need an amplifier with

enough output power. Even if you are not planning to run your system at very loud levels, an amplifier

needs to have enough power so that the dynamics of speech and music will not cause "clipping." An

amplifier that is pushed beyond its output power capability will clip signals. Not only does this sound

bad, but the effect on a low frequency speaker or mid or high-frequency driver is similar to hitting the

cone or diaphragm with a hammer. Because of this, too small an amplifier can be more damaging to

speakers than one that seemingly has too much power. Peaks in speech or music signals can easily

exceed the average power levels by a factor of ten. If your amplifier is not big enough, these peaks

become clipped and distorted.

So how many watts can this baby handle?

You've heard this question a thousand times, and there is no precise answer. It depends on a number of

factors, including the thermal/mechanical limits of the drivers and crossover components. It also

depends on the input signal, its peak/average ratio, rise times, and spectral (frequency) content.

In considering what size amplifier to use, rather than focusing on the speaker's power handling, it is more

important to determine what is the OPTIMUM power for the speaker. For Community loudspeakers

the best answer lies in the PROGRAM power rating. This Program power rating should determine the

size amplifier you should use.

If you can't find an amplifier with that exact rating, multiply the PROGRAM power rating by .80 and

again by 1.25 to find the recommended power range. For example, the range for a 500W PROGRAM

power rating is from 400W (.80 X 500) to 625W (1.25 X 500). Anything larger is potentially excessive.

Anything smaller can cause damage. The amplifier will clip before activating the Dyna-Tech™ protection

circuits.

Our RMS rating represents the thermal power limit for the loudspeaker. It is also a standard number for

comparing to other products. The impedance or speaker load the amplifier "sees" is very important. If

the amplifier is not rated for the impedance load, the internal protection circuitry of the amplifier may

prevent full-power output. Additionally, if the amplifier is not of high enough quality or does not have

good internal protection against over-load, the amplifier or the speakers may be damaged.

In summary, it is very important to use an amplifier that has enough power to properly drive your

loudspeaker. You may use any quality amplifier to power your new loudspeakers. To avoid distortion

and potential damage, the output power of your amplifier must be sufficient to drive the loudspeaker

system to the sound pressure level you desire without driving the amplifier into "clipping." If your

amplifier has "clip" or "protect" lights mounted on the front and you see them illuminate during normal

use, then you probably need a larger amplifier or may want to consider band limiting the amplifier. To

achieve this, you can employ a sub sonic / high pass filter.